./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/queue.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/queue.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 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/pthread/queue.i ./goblint.2024-05-07_14-17-48.files/protection/queue.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-wip.fs.witness-ghost-b44c828-m [2024-05-12 12:56:51,486 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 12:56:51,542 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 12:56:51,565 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 12:56:51,565 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 12:56:51,586 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 12:56:51,587 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 12:56:51,587 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 12:56:51,588 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 12:56:51,591 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 12:56:51,591 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 12:56:51,591 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 12:56:51,592 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 12:56:51,593 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 12:56:51,593 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 12:56:51,593 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 12:56:51,593 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 12:56:51,593 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 12:56:51,593 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 12:56:51,593 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 12:56:51,594 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 12:56:51,595 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 12:56:51,595 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 12:56:51,595 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 12:56:51,595 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 12:56:51,595 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 12:56:51,595 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 12:56:51,596 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 12:56:51,596 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 12:56:51,596 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 12:56:51,597 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 12:56:51,597 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 12:56:51,597 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 12:56:51,597 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 12:56:51,597 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 12:56:51,597 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 12:56:51,598 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 12:56:51,598 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 12:56:51,598 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 12:56:51,598 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 12:56:51,598 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 12:56:51,599 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 12:56:51,599 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 12:56:51,599 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 12:56:51,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 12:56:51,797 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 12:56:51,799 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 12:56:51,800 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 12:56:51,801 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 12:56:51,802 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue.i [2024-05-12 12:56:52,753 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 12:56:52,991 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 12:56:52,993 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i [2024-05-12 12:56:53,011 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/986ce3cec/2b18e51929d946a5939223310e8e5632/FLAG1297f6fbc [2024-05-12 12:56:53,023 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/986ce3cec/2b18e51929d946a5939223310e8e5632 [2024-05-12 12:56:53,025 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 12:56:53,025 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 12:56:53,027 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/queue.yml/witness.yml [2024-05-12 12:56:53,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 12:56:53,111 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 12:56:53,113 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 12:56:53,113 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 12:56:53,117 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 12:56:53,117 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 12:56:53" (1/2) ... [2024-05-12 12:56:53,118 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ba663b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:56:53, skipping insertion in model container [2024-05-12 12:56:53,118 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 12:56:53" (1/2) ... [2024-05-12 12:56:53,119 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@61c6e8bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:56:53, skipping insertion in model container [2024-05-12 12:56:53,119 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:56:53" (2/2) ... [2024-05-12 12:56:53,120 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ba663b7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:53, skipping insertion in model container [2024-05-12 12:56:53,120 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:56:53" (2/2) ... [2024-05-12 12:56:53,120 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 12:56:53,152 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 12:56:53,153 INFO L97 edCorrectnessWitness]: Location invariant before [L1065-L1065] ! multithreaded || (((0 <= queue.head && 0 <= queue.tail) && queue.head <= 20) && queue.tail <= 20) [2024-05-12 12:56:53,153 INFO L97 edCorrectnessWitness]: Location invariant before [L1064-L1064] ! multithreaded || (((0 <= queue.head && 0 <= queue.tail) && queue.head <= 20) && queue.tail <= 20) [2024-05-12 12:56:53,153 INFO L103 edCorrectnessWitness]: ghost_variable m_locked = 0 [2024-05-12 12:56:53,153 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 12:56:53,153 INFO L106 edCorrectnessWitness]: ghost_update [L1029-L1029] m_locked = 0; [2024-05-12 12:56:53,153 INFO L106 edCorrectnessWitness]: ghost_update [L1020-L1020] m_locked = 1; [2024-05-12 12:56:53,154 INFO L106 edCorrectnessWitness]: ghost_update [L1039-L1039] m_locked = 1; [2024-05-12 12:56:53,154 INFO L106 edCorrectnessWitness]: ghost_update [L1063-L1063] multithreaded = 1; [2024-05-12 12:56:53,154 INFO L106 edCorrectnessWitness]: ghost_update [L1008-L1008] m_locked = 1; [2024-05-12 12:56:53,154 INFO L106 edCorrectnessWitness]: ghost_update [L1017-L1017] m_locked = 0; [2024-05-12 12:56:53,154 INFO L106 edCorrectnessWitness]: ghost_update [L1048-L1048] m_locked = 0; [2024-05-12 12:56:53,190 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 12:56:53,536 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43284,43297] [2024-05-12 12:56:53,545 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43491,43504] [2024-05-12 12:56:53,552 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43772,43785] [2024-05-12 12:56:53,563 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 12:56:53,571 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 12:56:53,643 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43284,43297] Start Parsing Local [2024-05-12 12:56:53,645 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43491,43504] Start Parsing Local [2024-05-12 12:56:53,647 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43772,43785] Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 12:56:53,664 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 12:56:53,723 INFO L206 MainTranslator]: Completed translation [2024-05-12 12:56:53,725 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:53 WrapperNode [2024-05-12 12:56:53,725 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 12:56:53,726 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 12:56:53,727 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 12:56:53,727 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 12:56:53,732 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:53" (1/1) ... [2024-05-12 12:56:53,771 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:53" (1/1) ... [2024-05-12 12:56:53,834 INFO L138 Inliner]: procedures = 275, calls = 255, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 1000 [2024-05-12 12:56:53,835 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 12:56:53,835 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 12:56:53,835 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 12:56:53,836 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 12:56:53,846 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:53" (1/1) ... [2024-05-12 12:56:53,846 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:53" (1/1) ... [2024-05-12 12:56:53,850 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:53" (1/1) ... [2024-05-12 12:56:53,876 INFO L175 MemorySlicer]: Split 239 memory accesses to 7 slices as follows [2, 8, 5, 4, 216, 2, 2]. 90 percent of accesses are in the largest equivalence class. The 15 initializations are split as follows [2, 8, 5, 0, 0, 0, 0]. The 20 writes are split as follows [0, 0, 0, 3, 15, 1, 1]. [2024-05-12 12:56:53,877 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:53" (1/1) ... [2024-05-12 12:56:53,877 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:53" (1/1) ... [2024-05-12 12:56:53,894 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:53" (1/1) ... [2024-05-12 12:56:53,898 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:53" (1/1) ... [2024-05-12 12:56:53,900 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:53" (1/1) ... [2024-05-12 12:56:53,903 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:53" (1/1) ... [2024-05-12 12:56:53,907 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 12:56:53,908 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 12:56:53,917 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 12:56:53,917 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 12:56:53,918 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:53" (1/1) ... [2024-05-12 12:56:53,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 12:56:53,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:56:53,945 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) [2024-05-12 12:56:53,968 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 [2024-05-12 12:56:53,974 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-05-12 12:56:53,974 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-05-12 12:56:53,975 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-05-12 12:56:53,975 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-05-12 12:56:53,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 12:56:53,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 12:56:53,977 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-05-12 12:56:53,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-05-12 12:56:53,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-05-12 12:56:53,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-05-12 12:56:53,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-05-12 12:56:53,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-05-12 12:56:53,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-05-12 12:56:53,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-05-12 12:56:53,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 12:56:53,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 12:56:53,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 12:56:53,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 12:56:53,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-05-12 12:56:53,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-05-12 12:56:53,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-05-12 12:56:53,978 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-05-12 12:56:53,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 12:56:53,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 12:56:53,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 12:56:53,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 12:56:53,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 12:56:53,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-05-12 12:56:53,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-05-12 12:56:53,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-05-12 12:56:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 12:56:53,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 12:56:53,981 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 12:56:54,114 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 12:56:54,116 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 12:56:54,814 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 12:56:54,815 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 12:56:56,330 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 12:56:56,330 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-05-12 12:56:56,330 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 12:56:56 BoogieIcfgContainer [2024-05-12 12:56:56,330 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 12:56:56,396 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 12:56:56,396 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 12:56:56,399 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 12:56:56,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 12:56:53" (1/4) ... [2024-05-12 12:56:56,399 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a041e50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 12:56:56, skipping insertion in model container [2024-05-12 12:56:56,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:56:53" (2/4) ... [2024-05-12 12:56:56,400 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a041e50 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 12:56:56, skipping insertion in model container [2024-05-12 12:56:56,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:53" (3/4) ... [2024-05-12 12:56:56,400 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a041e50 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 12:56:56, skipping insertion in model container [2024-05-12 12:56:56,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 12:56:56" (4/4) ... [2024-05-12 12:56:56,401 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2024-05-12 12:56:56,429 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 12:56:56,429 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-05-12 12:56:56,429 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 12:56:56,472 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-05-12 12:56:56,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 53 transitions, 120 flow [2024-05-12 12:56:56,557 INFO L124 PetriNetUnfolderBase]: 7/51 cut-off events. [2024-05-12 12:56:56,558 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-05-12 12:56:56,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 51 events. 7/51 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 102 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2024-05-12 12:56:56,560 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 53 transitions, 120 flow [2024-05-12 12:56:56,562 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 49 transitions, 107 flow [2024-05-12 12:56:56,575 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 12:56:56,601 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;@65585461, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 12:56:56,601 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-05-12 12:56:56,604 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 12:56:56,605 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-05-12 12:56:56,605 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 12:56:56,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:56:56,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-05-12 12:56:56,606 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:56:56,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:56:56,624 INFO L85 PathProgramCache]: Analyzing trace with hash 2124435, now seen corresponding path program 1 times [2024-05-12 12:56:56,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:56:56,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742451134] [2024-05-12 12:56:56,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:56,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:56:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:56:56,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:56:56,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:56:56,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742451134] [2024-05-12 12:56:56,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742451134] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:56:56,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:56:56,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 12:56:56,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100681736] [2024-05-12 12:56:56,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:56:56,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-05-12 12:56:56,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:56:56,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-05-12 12:56:56,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-05-12 12:56:56,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-05-12 12:56:56,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 49 transitions, 107 flow. Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 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) [2024-05-12 12:56:56,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:56:56,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-05-12 12:56:56,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:56:57,478 INFO L124 PetriNetUnfolderBase]: 705/1235 cut-off events. [2024-05-12 12:56:57,479 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-05-12 12:56:57,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2389 conditions, 1235 events. 705/1235 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6037 event pairs, 563 based on Foata normal form. 71/1179 useless extension candidates. Maximal degree in co-relation 2287. Up to 1114 conditions per place. [2024-05-12 12:56:57,489 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 35 selfloop transitions, 0 changer transitions 0/44 dead transitions. [2024-05-12 12:56:57,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 44 transitions, 167 flow [2024-05-12 12:56:57,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-12 12:56:57,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-05-12 12:56:57,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 62 transitions. [2024-05-12 12:56:57,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5849056603773585 [2024-05-12 12:56:57,515 INFO L175 Difference]: Start difference. First operand has 49 places, 49 transitions, 107 flow. Second operand 2 states and 62 transitions. [2024-05-12 12:56:57,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 44 transitions, 167 flow [2024-05-12 12:56:57,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 44 transitions, 162 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-05-12 12:56:57,522 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 92 flow [2024-05-12 12:56:57,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=92, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2024-05-12 12:56:57,526 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -4 predicate places. [2024-05-12 12:56:57,526 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 92 flow [2024-05-12 12:56:57,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 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) [2024-05-12 12:56:57,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:56:57,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:56:57,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 12:56:57,527 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:56:57,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:56:57,529 INFO L85 PathProgramCache]: Analyzing trace with hash -747644985, now seen corresponding path program 1 times [2024-05-12 12:56:57,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:56:57,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832719638] [2024-05-12 12:56:57,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:57,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:56:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:56:58,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:56:58,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:56:58,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832719638] [2024-05-12 12:56:58,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832719638] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:56:58,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:56:58,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 12:56:58,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183983750] [2024-05-12 12:56:58,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:56:58,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 12:56:58,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:56:58,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 12:56:58,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 12:56:58,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-05-12 12:56:58,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2024-05-12 12:56:58,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:56:58,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-05-12 12:56:58,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:56:58,507 INFO L124 PetriNetUnfolderBase]: 805/1404 cut-off events. [2024-05-12 12:56:58,507 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-05-12 12:56:58,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2698 conditions, 1404 events. 805/1404 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6991 event pairs, 190 based on Foata normal form. 0/1274 useless extension candidates. Maximal degree in co-relation 2695. Up to 1128 conditions per place. [2024-05-12 12:56:58,512 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 58 selfloop transitions, 7 changer transitions 0/73 dead transitions. [2024-05-12 12:56:58,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 73 transitions, 282 flow [2024-05-12 12:56:58,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:56:58,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:56:58,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-05-12 12:56:58,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46037735849056605 [2024-05-12 12:56:58,514 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 92 flow. Second operand 5 states and 122 transitions. [2024-05-12 12:56:58,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 73 transitions, 282 flow [2024-05-12 12:56:58,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 73 transitions, 282 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-05-12 12:56:58,516 INFO L231 Difference]: Finished difference. Result has 52 places, 50 transitions, 140 flow [2024-05-12 12:56:58,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=140, PETRI_PLACES=52, PETRI_TRANSITIONS=50} [2024-05-12 12:56:58,517 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 3 predicate places. [2024-05-12 12:56:58,517 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 50 transitions, 140 flow [2024-05-12 12:56:58,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2024-05-12 12:56:58,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:56:58,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:56:58,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 12:56:58,518 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:56:58,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:56:58,518 INFO L85 PathProgramCache]: Analyzing trace with hash 610816124, now seen corresponding path program 1 times [2024-05-12 12:56:58,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:56:58,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873815464] [2024-05-12 12:56:58,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:58,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:56:58,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:56:58,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:56:58,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:56:58,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873815464] [2024-05-12 12:56:58,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873815464] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:56:58,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:56:58,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 12:56:58,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400410097] [2024-05-12 12:56:58,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:56:58,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 12:56:58,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:56:58,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 12:56:58,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 12:56:58,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-05-12 12:56:58,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 50 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2024-05-12 12:56:58,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:56:58,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-05-12 12:56:58,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:56:59,477 INFO L124 PetriNetUnfolderBase]: 1294/2153 cut-off events. [2024-05-12 12:56:59,477 INFO L125 PetriNetUnfolderBase]: For 174/177 co-relation queries the response was YES. [2024-05-12 12:56:59,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4372 conditions, 2153 events. 1294/2153 cut-off events. For 174/177 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11318 event pairs, 445 based on Foata normal form. 3/1866 useless extension candidates. Maximal degree in co-relation 4365. Up to 1586 conditions per place. [2024-05-12 12:56:59,485 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 76 selfloop transitions, 9 changer transitions 0/93 dead transitions. [2024-05-12 12:56:59,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 93 transitions, 408 flow [2024-05-12 12:56:59,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:56:59,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:56:59,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2024-05-12 12:56:59,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5283018867924528 [2024-05-12 12:56:59,487 INFO L175 Difference]: Start difference. First operand has 52 places, 50 transitions, 140 flow. Second operand 5 states and 140 transitions. [2024-05-12 12:56:59,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 93 transitions, 408 flow [2024-05-12 12:56:59,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 93 transitions, 408 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-05-12 12:56:59,489 INFO L231 Difference]: Finished difference. Result has 59 places, 55 transitions, 195 flow [2024-05-12 12:56:59,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=195, PETRI_PLACES=59, PETRI_TRANSITIONS=55} [2024-05-12 12:56:59,490 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 10 predicate places. [2024-05-12 12:56:59,490 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 55 transitions, 195 flow [2024-05-12 12:56:59,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2024-05-12 12:56:59,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:56:59,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:56:59,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 12:56:59,490 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:56:59,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:56:59,491 INFO L85 PathProgramCache]: Analyzing trace with hash 648232186, now seen corresponding path program 1 times [2024-05-12 12:56:59,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:56:59,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061902005] [2024-05-12 12:56:59,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:59,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:56:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:56:59,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:56:59,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:56:59,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061902005] [2024-05-12 12:56:59,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061902005] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:56:59,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:56:59,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 12:56:59,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057018793] [2024-05-12 12:56:59,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:56:59,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 12:56:59,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:56:59,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 12:56:59,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 12:56:59,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-05-12 12:56:59,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 195 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2024-05-12 12:56:59,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:56:59,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-05-12 12:56:59,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:56:59,902 INFO L124 PetriNetUnfolderBase]: 998/1743 cut-off events. [2024-05-12 12:56:59,902 INFO L125 PetriNetUnfolderBase]: For 579/589 co-relation queries the response was YES. [2024-05-12 12:56:59,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4117 conditions, 1743 events. 998/1743 cut-off events. For 579/589 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9381 event pairs, 406 based on Foata normal form. 3/1629 useless extension candidates. Maximal degree in co-relation 4106. Up to 1436 conditions per place. [2024-05-12 12:56:59,910 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 56 selfloop transitions, 5 changer transitions 0/70 dead transitions. [2024-05-12 12:56:59,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 70 transitions, 365 flow [2024-05-12 12:56:59,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:56:59,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:56:59,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-05-12 12:56:59,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345911949685535 [2024-05-12 12:56:59,912 INFO L175 Difference]: Start difference. First operand has 59 places, 55 transitions, 195 flow. Second operand 3 states and 85 transitions. [2024-05-12 12:56:59,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 70 transitions, 365 flow [2024-05-12 12:56:59,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 70 transitions, 365 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-05-12 12:56:59,915 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 203 flow [2024-05-12 12:56:59,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=203, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2024-05-12 12:56:59,915 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 12 predicate places. [2024-05-12 12:56:59,916 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 203 flow [2024-05-12 12:56:59,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2024-05-12 12:56:59,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:56:59,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:56:59,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 12:56:59,916 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:56:59,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:56:59,917 INFO L85 PathProgramCache]: Analyzing trace with hash 648230831, now seen corresponding path program 1 times [2024-05-12 12:56:59,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:56:59,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413726961] [2024-05-12 12:56:59,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:59,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:56:59,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:57:00,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:57:00,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:57:00,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413726961] [2024-05-12 12:57:00,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413726961] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:57:00,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:57:00,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 12:57:00,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62337898] [2024-05-12 12:57:00,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:57:00,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:57:00,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:57:00,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:57:00,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:57:00,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-05-12 12:57:00,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-05-12 12:57:00,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:57:00,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-05-12 12:57:00,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:57:00,931 INFO L124 PetriNetUnfolderBase]: 1315/2313 cut-off events. [2024-05-12 12:57:00,931 INFO L125 PetriNetUnfolderBase]: For 914/924 co-relation queries the response was YES. [2024-05-12 12:57:00,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5512 conditions, 2313 events. 1315/2313 cut-off events. For 914/924 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 13098 event pairs, 146 based on Foata normal form. 16/2207 useless extension candidates. Maximal degree in co-relation 5500. Up to 1379 conditions per place. [2024-05-12 12:57:00,943 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 79 selfloop transitions, 12 changer transitions 0/99 dead transitions. [2024-05-12 12:57:00,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 99 transitions, 502 flow [2024-05-12 12:57:00,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:57:00,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:57:00,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-05-12 12:57:00,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4811320754716981 [2024-05-12 12:57:00,944 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 203 flow. Second operand 6 states and 153 transitions. [2024-05-12 12:57:00,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 99 transitions, 502 flow [2024-05-12 12:57:00,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 99 transitions, 488 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 12:57:00,947 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 263 flow [2024-05-12 12:57:00,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=263, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2024-05-12 12:57:00,948 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 18 predicate places. [2024-05-12 12:57:00,948 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 263 flow [2024-05-12 12:57:00,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-05-12 12:57:00,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:57:00,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:57:00,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 12:57:00,948 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:57:00,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:57:00,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1379635567, now seen corresponding path program 1 times [2024-05-12 12:57:00,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:57:00,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562599922] [2024-05-12 12:57:00,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:57:00,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:57:00,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:57:01,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:57:01,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:57:01,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562599922] [2024-05-12 12:57:01,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562599922] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:57:01,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:57:01,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 12:57:01,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209224648] [2024-05-12 12:57:01,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:57:01,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:57:01,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:57:01,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:57:01,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:57:01,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-05-12 12:57:01,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 263 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-05-12 12:57:01,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:57:01,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-05-12 12:57:01,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:57:01,780 INFO L124 PetriNetUnfolderBase]: 1508/2635 cut-off events. [2024-05-12 12:57:01,780 INFO L125 PetriNetUnfolderBase]: For 1363/1376 co-relation queries the response was YES. [2024-05-12 12:57:01,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6465 conditions, 2635 events. 1508/2635 cut-off events. For 1363/1376 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 14743 event pairs, 193 based on Foata normal form. 5/2526 useless extension candidates. Maximal degree in co-relation 6450. Up to 1435 conditions per place. [2024-05-12 12:57:01,792 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 94 selfloop transitions, 15 changer transitions 0/118 dead transitions. [2024-05-12 12:57:01,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 118 transitions, 658 flow [2024-05-12 12:57:01,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:57:01,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:57:01,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 170 transitions. [2024-05-12 12:57:01,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345911949685535 [2024-05-12 12:57:01,794 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 263 flow. Second operand 6 states and 170 transitions. [2024-05-12 12:57:01,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 118 transitions, 658 flow [2024-05-12 12:57:01,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 118 transitions, 638 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-05-12 12:57:01,799 INFO L231 Difference]: Finished difference. Result has 74 places, 66 transitions, 329 flow [2024-05-12 12:57:01,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=329, PETRI_PLACES=74, PETRI_TRANSITIONS=66} [2024-05-12 12:57:01,799 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 25 predicate places. [2024-05-12 12:57:01,799 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 66 transitions, 329 flow [2024-05-12 12:57:01,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-05-12 12:57:01,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:57:01,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:57:01,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 12:57:01,800 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:57:01,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:57:01,800 INFO L85 PathProgramCache]: Analyzing trace with hash -758998864, now seen corresponding path program 1 times [2024-05-12 12:57:01,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:57:01,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375155998] [2024-05-12 12:57:01,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:57:01,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:57:01,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:57:02,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:57:02,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:57:02,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375155998] [2024-05-12 12:57:02,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375155998] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:57:02,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:57:02,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 12:57:02,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701764364] [2024-05-12 12:57:02,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:57:02,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:57:02,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:57:02,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:57:02,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:57:02,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-05-12 12:57:02,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 66 transitions, 329 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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) [2024-05-12 12:57:02,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:57:02,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-05-12 12:57:02,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:57:03,037 INFO L124 PetriNetUnfolderBase]: 1999/3407 cut-off events. [2024-05-12 12:57:03,038 INFO L125 PetriNetUnfolderBase]: For 3043/3059 co-relation queries the response was YES. [2024-05-12 12:57:03,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9103 conditions, 3407 events. 1999/3407 cut-off events. For 3043/3059 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 19598 event pairs, 440 based on Foata normal form. 135/3432 useless extension candidates. Maximal degree in co-relation 9084. Up to 2233 conditions per place. [2024-05-12 12:57:03,057 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 100 selfloop transitions, 16 changer transitions 1/125 dead transitions. [2024-05-12 12:57:03,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 125 transitions, 746 flow [2024-05-12 12:57:03,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:57:03,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:57:03,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 171 transitions. [2024-05-12 12:57:03,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5377358490566038 [2024-05-12 12:57:03,059 INFO L175 Difference]: Start difference. First operand has 74 places, 66 transitions, 329 flow. Second operand 6 states and 171 transitions. [2024-05-12 12:57:03,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 125 transitions, 746 flow [2024-05-12 12:57:03,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 125 transitions, 738 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-05-12 12:57:03,066 INFO L231 Difference]: Finished difference. Result has 81 places, 72 transitions, 416 flow [2024-05-12 12:57:03,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=416, PETRI_PLACES=81, PETRI_TRANSITIONS=72} [2024-05-12 12:57:03,067 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 32 predicate places. [2024-05-12 12:57:03,067 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 72 transitions, 416 flow [2024-05-12 12:57:03,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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) [2024-05-12 12:57:03,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:57:03,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:57:03,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 12:57:03,068 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:57:03,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:57:03,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1615132043, now seen corresponding path program 1 times [2024-05-12 12:57:03,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:57:03,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360774462] [2024-05-12 12:57:03,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:57:03,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:57:03,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:57:03,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:57:03,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:57:03,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360774462] [2024-05-12 12:57:03,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360774462] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:57:03,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:57:03,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 12:57:03,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519232285] [2024-05-12 12:57:03,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:57:03,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 12:57:03,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:57:03,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 12:57:03,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 12:57:03,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-05-12 12:57:03,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 72 transitions, 416 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-05-12 12:57:03,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:57:03,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-05-12 12:57:03,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:57:03,630 INFO L124 PetriNetUnfolderBase]: 1078/1949 cut-off events. [2024-05-12 12:57:03,631 INFO L125 PetriNetUnfolderBase]: For 2546/2563 co-relation queries the response was YES. [2024-05-12 12:57:03,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5464 conditions, 1949 events. 1078/1949 cut-off events. For 2546/2563 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 10215 event pairs, 379 based on Foata normal form. 67/1972 useless extension candidates. Maximal degree in co-relation 5441. Up to 925 conditions per place. [2024-05-12 12:57:03,640 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 60 selfloop transitions, 6 changer transitions 2/76 dead transitions. [2024-05-12 12:57:03,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 76 transitions, 498 flow [2024-05-12 12:57:03,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:57:03,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:57:03,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2024-05-12 12:57:03,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5471698113207547 [2024-05-12 12:57:03,641 INFO L175 Difference]: Start difference. First operand has 81 places, 72 transitions, 416 flow. Second operand 3 states and 87 transitions. [2024-05-12 12:57:03,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 76 transitions, 498 flow [2024-05-12 12:57:03,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 76 transitions, 478 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-05-12 12:57:03,648 INFO L231 Difference]: Finished difference. Result has 77 places, 59 transitions, 310 flow [2024-05-12 12:57:03,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=310, PETRI_PLACES=77, PETRI_TRANSITIONS=59} [2024-05-12 12:57:03,648 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 28 predicate places. [2024-05-12 12:57:03,648 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 59 transitions, 310 flow [2024-05-12 12:57:03,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-05-12 12:57:03,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:57:03,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:57:03,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 12:57:03,649 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:57:03,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:57:03,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1256963854, now seen corresponding path program 1 times [2024-05-12 12:57:03,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:57:03,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070109399] [2024-05-12 12:57:03,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:57:03,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:57:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:57:04,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:57:04,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:57:04,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070109399] [2024-05-12 12:57:04,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070109399] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:57:04,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:57:04,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 12:57:04,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771434684] [2024-05-12 12:57:04,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:57:04,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 12:57:04,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:57:04,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 12:57:04,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-05-12 12:57:04,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-05-12 12:57:04,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 59 transitions, 310 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 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) [2024-05-12 12:57:04,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:57:04,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-05-12 12:57:04,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:57:04,809 INFO L124 PetriNetUnfolderBase]: 1375/2469 cut-off events. [2024-05-12 12:57:04,809 INFO L125 PetriNetUnfolderBase]: For 2670/2670 co-relation queries the response was YES. [2024-05-12 12:57:04,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6918 conditions, 2469 events. 1375/2469 cut-off events. For 2670/2670 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 13707 event pairs, 122 based on Foata normal form. 10/2440 useless extension candidates. Maximal degree in co-relation 6895. Up to 1158 conditions per place. [2024-05-12 12:57:04,821 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 87 selfloop transitions, 13 changer transitions 3/110 dead transitions. [2024-05-12 12:57:04,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 110 transitions, 690 flow [2024-05-12 12:57:04,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:57:04,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:57:04,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-05-12 12:57:04,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4528301886792453 [2024-05-12 12:57:04,825 INFO L175 Difference]: Start difference. First operand has 77 places, 59 transitions, 310 flow. Second operand 7 states and 168 transitions. [2024-05-12 12:57:04,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 110 transitions, 690 flow [2024-05-12 12:57:04,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 110 transitions, 672 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-05-12 12:57:04,832 INFO L231 Difference]: Finished difference. Result has 84 places, 65 transitions, 388 flow [2024-05-12 12:57:04,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=388, PETRI_PLACES=84, PETRI_TRANSITIONS=65} [2024-05-12 12:57:04,832 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 35 predicate places. [2024-05-12 12:57:04,832 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 65 transitions, 388 flow [2024-05-12 12:57:04,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 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) [2024-05-12 12:57:04,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:57:04,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:57:04,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 12:57:04,833 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:57:04,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:57:04,834 INFO L85 PathProgramCache]: Analyzing trace with hash 2016638739, now seen corresponding path program 1 times [2024-05-12 12:57:04,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:57:04,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138939349] [2024-05-12 12:57:04,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:57:04,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:57:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:57:05,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:57:05,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:57:05,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138939349] [2024-05-12 12:57:05,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138939349] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:57:05,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:57:05,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 12:57:05,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491083054] [2024-05-12 12:57:05,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:57:05,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 12:57:05,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:57:05,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 12:57:05,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-05-12 12:57:05,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-05-12 12:57:05,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 65 transitions, 388 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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) [2024-05-12 12:57:05,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:57:05,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-05-12 12:57:05,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:57:06,419 INFO L124 PetriNetUnfolderBase]: 1661/2891 cut-off events. [2024-05-12 12:57:06,419 INFO L125 PetriNetUnfolderBase]: For 5121/5123 co-relation queries the response was YES. [2024-05-12 12:57:06,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8412 conditions, 2891 events. 1661/2891 cut-off events. For 5121/5123 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 16072 event pairs, 222 based on Foata normal form. 95/2936 useless extension candidates. Maximal degree in co-relation 8387. Up to 1425 conditions per place. [2024-05-12 12:57:06,432 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 101 selfloop transitions, 15 changer transitions 5/128 dead transitions. [2024-05-12 12:57:06,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 128 transitions, 838 flow [2024-05-12 12:57:06,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:57:06,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:57:06,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-05-12 12:57:06,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49326145552560646 [2024-05-12 12:57:06,434 INFO L175 Difference]: Start difference. First operand has 84 places, 65 transitions, 388 flow. Second operand 7 states and 183 transitions. [2024-05-12 12:57:06,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 128 transitions, 838 flow [2024-05-12 12:57:06,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 128 transitions, 786 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-05-12 12:57:06,443 INFO L231 Difference]: Finished difference. Result has 91 places, 70 transitions, 429 flow [2024-05-12 12:57:06,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=429, PETRI_PLACES=91, PETRI_TRANSITIONS=70} [2024-05-12 12:57:06,444 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 42 predicate places. [2024-05-12 12:57:06,444 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 70 transitions, 429 flow [2024-05-12 12:57:06,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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) [2024-05-12 12:57:06,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:57:06,444 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:57:06,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-05-12 12:57:06,445 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:57:06,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:57:06,445 INFO L85 PathProgramCache]: Analyzing trace with hash 454084147, now seen corresponding path program 1 times [2024-05-12 12:57:06,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:57:06,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487312497] [2024-05-12 12:57:06,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:57:06,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:57:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:57:07,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:57:07,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:57:07,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487312497] [2024-05-12 12:57:07,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487312497] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 12:57:07,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687435175] [2024-05-12 12:57:07,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:57:07,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:57:07,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:57:07,421 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) [2024-05-12 12:57:07,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-05-12 12:57:07,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:57:07,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 34 conjunts are in the unsatisfiable core [2024-05-12 12:57:07,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 12:57:07,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2024-05-12 12:57:07,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 131 [2024-05-12 12:57:08,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-05-12 12:57:08,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 53 [2024-05-12 12:57:08,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 63 [2024-05-12 12:57:08,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:57:08,442 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 12:57:08,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-05-12 12:57:08,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2024-05-12 12:57:08,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2024-05-12 12:57:08,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-05-12 12:57:09,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2024-05-12 12:57:09,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-05-12 12:57:09,914 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:57:09,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687435175] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 12:57:09,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 12:57:09,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-05-12 12:57:09,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159758904] [2024-05-12 12:57:09,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 12:57:09,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-05-12 12:57:09,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:57:09,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-05-12 12:57:09,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2024-05-12 12:57:09,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-05-12 12:57:09,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 70 transitions, 429 flow. Second operand has 17 states, 17 states have (on average 13.529411764705882) internal successors, (230), 17 states have internal predecessors, (230), 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) [2024-05-12 12:57:09,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:57:09,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-05-12 12:57:09,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:57:12,099 INFO L124 PetriNetUnfolderBase]: 3888/6884 cut-off events. [2024-05-12 12:57:12,100 INFO L125 PetriNetUnfolderBase]: For 11542/11542 co-relation queries the response was YES. [2024-05-12 12:57:12,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20452 conditions, 6884 events. 3888/6884 cut-off events. For 11542/11542 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 40220 event pairs, 525 based on Foata normal form. 64/6814 useless extension candidates. Maximal degree in co-relation 20423. Up to 1252 conditions per place. [2024-05-12 12:57:12,137 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 177 selfloop transitions, 29 changer transitions 7/219 dead transitions. [2024-05-12 12:57:12,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 219 transitions, 1430 flow [2024-05-12 12:57:12,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-05-12 12:57:12,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-05-12 12:57:12,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 329 transitions. [2024-05-12 12:57:12,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4138364779874214 [2024-05-12 12:57:12,139 INFO L175 Difference]: Start difference. First operand has 91 places, 70 transitions, 429 flow. Second operand 15 states and 329 transitions. [2024-05-12 12:57:12,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 219 transitions, 1430 flow [2024-05-12 12:57:12,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 219 transitions, 1361 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-05-12 12:57:12,161 INFO L231 Difference]: Finished difference. Result has 102 places, 78 transitions, 553 flow [2024-05-12 12:57:12,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=553, PETRI_PLACES=102, PETRI_TRANSITIONS=78} [2024-05-12 12:57:12,162 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 53 predicate places. [2024-05-12 12:57:12,162 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 78 transitions, 553 flow [2024-05-12 12:57:12,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 13.529411764705882) internal successors, (230), 17 states have internal predecessors, (230), 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) [2024-05-12 12:57:12,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:57:12,162 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] [2024-05-12 12:57:12,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-05-12 12:57:12,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-05-12 12:57:12,375 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:57:12,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:57:12,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1194623156, now seen corresponding path program 1 times [2024-05-12 12:57:12,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:57:12,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113516285] [2024-05-12 12:57:12,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:57:12,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:57:12,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:57:12,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:57:12,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:57:12,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113516285] [2024-05-12 12:57:12,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113516285] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:57:12,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:57:12,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 12:57:12,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177142797] [2024-05-12 12:57:12,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:57:12,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 12:57:12,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:57:12,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 12:57:12,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 12:57:12,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-05-12 12:57:12,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 78 transitions, 553 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2024-05-12 12:57:12,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:57:12,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-05-12 12:57:12,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:57:13,442 INFO L124 PetriNetUnfolderBase]: 2543/4937 cut-off events. [2024-05-12 12:57:13,442 INFO L125 PetriNetUnfolderBase]: For 7927/7927 co-relation queries the response was YES. [2024-05-12 12:57:13,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14097 conditions, 4937 events. 2543/4937 cut-off events. For 7927/7927 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 27751 event pairs, 569 based on Foata normal form. 257/5109 useless extension candidates. Maximal degree in co-relation 14067. Up to 2314 conditions per place. [2024-05-12 12:57:13,469 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 97 selfloop transitions, 6 changer transitions 0/110 dead transitions. [2024-05-12 12:57:13,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 110 transitions, 932 flow [2024-05-12 12:57:13,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:57:13,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:57:13,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2024-05-12 12:57:13,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5408805031446541 [2024-05-12 12:57:13,471 INFO L175 Difference]: Start difference. First operand has 102 places, 78 transitions, 553 flow. Second operand 3 states and 86 transitions. [2024-05-12 12:57:13,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 110 transitions, 932 flow [2024-05-12 12:57:13,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 110 transitions, 827 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-05-12 12:57:13,486 INFO L231 Difference]: Finished difference. Result has 94 places, 77 transitions, 480 flow [2024-05-12 12:57:13,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=480, PETRI_PLACES=94, PETRI_TRANSITIONS=77} [2024-05-12 12:57:13,486 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 45 predicate places. [2024-05-12 12:57:13,486 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 77 transitions, 480 flow [2024-05-12 12:57:13,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2024-05-12 12:57:13,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:57:13,487 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] [2024-05-12 12:57:13,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-05-12 12:57:13,487 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:57:13,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:57:13,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1900148926, now seen corresponding path program 1 times [2024-05-12 12:57:13,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:57:13,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095082996] [2024-05-12 12:57:13,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:57:13,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:57:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:57:14,596 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:57:14,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:57:14,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095082996] [2024-05-12 12:57:14,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095082996] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 12:57:14,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535467528] [2024-05-12 12:57:14,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:57:14,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:57:14,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:57:14,598 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) [2024-05-12 12:57:14,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-05-12 12:57:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:57:14,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 19 conjunts are in the unsatisfiable core [2024-05-12 12:57:15,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 12:57:15,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2024-05-12 12:57:15,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 145 [2024-05-12 12:57:15,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-05-12 12:57:15,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 75 [2024-05-12 12:57:15,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 87 [2024-05-12 12:57:15,404 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:57:15,404 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 12:57:15,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-05-12 12:57:15,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2024-05-12 12:57:16,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2024-05-12 12:57:16,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-05-12 12:57:16,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-05-12 12:57:16,220 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:57:16,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535467528] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 12:57:16,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 12:57:16,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-05-12 12:57:16,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111753300] [2024-05-12 12:57:16,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 12:57:16,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-05-12 12:57:16,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:57:16,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-05-12 12:57:16,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2024-05-12 12:57:16,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-05-12 12:57:16,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 77 transitions, 480 flow. Second operand has 17 states, 17 states have (on average 14.058823529411764) internal successors, (239), 17 states have internal predecessors, (239), 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) [2024-05-12 12:57:16,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:57:16,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-05-12 12:57:16,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:57:18,636 INFO L124 PetriNetUnfolderBase]: 3149/5802 cut-off events. [2024-05-12 12:57:18,637 INFO L125 PetriNetUnfolderBase]: For 17536/17536 co-relation queries the response was YES. [2024-05-12 12:57:18,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17808 conditions, 5802 events. 3149/5802 cut-off events. For 17536/17536 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 31936 event pairs, 675 based on Foata normal form. 365/6069 useless extension candidates. Maximal degree in co-relation 17780. Up to 1148 conditions per place. [2024-05-12 12:57:18,662 INFO L140 encePairwiseOnDemand]: 45/53 looper letters, 331 selfloop transitions, 78 changer transitions 38/452 dead transitions. [2024-05-12 12:57:18,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 452 transitions, 3001 flow [2024-05-12 12:57:18,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-05-12 12:57:18,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-05-12 12:57:18,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 719 transitions. [2024-05-12 12:57:18,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45220125786163523 [2024-05-12 12:57:18,665 INFO L175 Difference]: Start difference. First operand has 94 places, 77 transitions, 480 flow. Second operand 30 states and 719 transitions. [2024-05-12 12:57:18,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 452 transitions, 3001 flow [2024-05-12 12:57:18,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 452 transitions, 2870 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-05-12 12:57:18,686 INFO L231 Difference]: Finished difference. Result has 132 places, 130 transitions, 1117 flow [2024-05-12 12:57:18,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1117, PETRI_PLACES=132, PETRI_TRANSITIONS=130} [2024-05-12 12:57:18,687 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 83 predicate places. [2024-05-12 12:57:18,687 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 130 transitions, 1117 flow [2024-05-12 12:57:18,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 14.058823529411764) internal successors, (239), 17 states have internal predecessors, (239), 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) [2024-05-12 12:57:18,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:57:18,688 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] [2024-05-12 12:57:18,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-05-12 12:57:18,904 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,SelfDestructingSolverStorable12 [2024-05-12 12:57:18,904 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:57:18,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:57:18,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1949982208, now seen corresponding path program 1 times [2024-05-12 12:57:18,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:57:18,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080057511] [2024-05-12 12:57:18,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:57:18,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:57:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:57:19,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:57:19,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:57:19,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080057511] [2024-05-12 12:57:19,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080057511] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:57:19,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:57:19,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:57:19,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048374924] [2024-05-12 12:57:19,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:57:19,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:57:19,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:57:19,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:57:19,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:57:19,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-05-12 12:57:19,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 130 transitions, 1117 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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) [2024-05-12 12:57:19,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:57:19,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-05-12 12:57:19,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:57:21,266 INFO L124 PetriNetUnfolderBase]: 3247/6187 cut-off events. [2024-05-12 12:57:21,267 INFO L125 PetriNetUnfolderBase]: For 21293/21324 co-relation queries the response was YES. [2024-05-12 12:57:21,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21044 conditions, 6187 events. 3247/6187 cut-off events. For 21293/21324 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 36587 event pairs, 1238 based on Foata normal form. 39/6096 useless extension candidates. Maximal degree in co-relation 21005. Up to 4623 conditions per place. [2024-05-12 12:57:21,293 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 163 selfloop transitions, 26 changer transitions 8/204 dead transitions. [2024-05-12 12:57:21,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 204 transitions, 1951 flow [2024-05-12 12:57:21,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:57:21,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:57:21,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 221 transitions. [2024-05-12 12:57:21,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4169811320754717 [2024-05-12 12:57:21,294 INFO L175 Difference]: Start difference. First operand has 132 places, 130 transitions, 1117 flow. Second operand 10 states and 221 transitions. [2024-05-12 12:57:21,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 204 transitions, 1951 flow [2024-05-12 12:57:21,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 204 transitions, 1700 flow, removed 48 selfloop flow, removed 13 redundant places. [2024-05-12 12:57:21,343 INFO L231 Difference]: Finished difference. Result has 136 places, 153 transitions, 1237 flow [2024-05-12 12:57:21,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=931, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1237, PETRI_PLACES=136, PETRI_TRANSITIONS=153} [2024-05-12 12:57:21,344 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 87 predicate places. [2024-05-12 12:57:21,344 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 153 transitions, 1237 flow [2024-05-12 12:57:21,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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) [2024-05-12 12:57:21,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:57:21,345 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] [2024-05-12 12:57:21,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-05-12 12:57:21,345 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:57:21,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:57:21,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1327647992, now seen corresponding path program 2 times [2024-05-12 12:57:21,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:57:21,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866488281] [2024-05-12 12:57:21,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:57:21,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:57:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:57:22,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:57:22,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:57:22,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866488281] [2024-05-12 12:57:22,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866488281] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:57:22,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:57:22,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:57:22,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671116319] [2024-05-12 12:57:22,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:57:22,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:57:22,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:57:22,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:57:22,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:57:22,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-05-12 12:57:22,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 153 transitions, 1237 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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) [2024-05-12 12:57:22,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:57:22,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-05-12 12:57:22,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:57:23,651 INFO L124 PetriNetUnfolderBase]: 3566/6811 cut-off events. [2024-05-12 12:57:23,651 INFO L125 PetriNetUnfolderBase]: For 20551/20551 co-relation queries the response was YES. [2024-05-12 12:57:23,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23609 conditions, 6811 events. 3566/6811 cut-off events. For 20551/20551 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 41117 event pairs, 1244 based on Foata normal form. 40/6741 useless extension candidates. Maximal degree in co-relation 23565. Up to 4519 conditions per place. [2024-05-12 12:57:23,694 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 177 selfloop transitions, 36 changer transitions 16/236 dead transitions. [2024-05-12 12:57:23,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 236 transitions, 2187 flow [2024-05-12 12:57:23,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:57:23,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:57:23,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 235 transitions. [2024-05-12 12:57:23,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44339622641509435 [2024-05-12 12:57:23,696 INFO L175 Difference]: Start difference. First operand has 136 places, 153 transitions, 1237 flow. Second operand 10 states and 235 transitions. [2024-05-12 12:57:23,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 236 transitions, 2187 flow [2024-05-12 12:57:23,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 236 transitions, 2187 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-05-12 12:57:23,749 INFO L231 Difference]: Finished difference. Result has 150 places, 171 transitions, 1593 flow [2024-05-12 12:57:23,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1237, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1593, PETRI_PLACES=150, PETRI_TRANSITIONS=171} [2024-05-12 12:57:23,749 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 101 predicate places. [2024-05-12 12:57:23,750 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 171 transitions, 1593 flow [2024-05-12 12:57:23,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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) [2024-05-12 12:57:23,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:57:23,750 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] [2024-05-12 12:57:23,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-05-12 12:57:23,750 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:57:23,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:57:23,751 INFO L85 PathProgramCache]: Analyzing trace with hash -120380384, now seen corresponding path program 3 times [2024-05-12 12:57:23,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:57:23,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654604793] [2024-05-12 12:57:23,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:57:23,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:57:23,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:57:24,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:57:24,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:57:24,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654604793] [2024-05-12 12:57:24,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654604793] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:57:24,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:57:24,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:57:24,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776310508] [2024-05-12 12:57:24,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:57:24,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:57:24,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:57:24,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:57:24,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:57:24,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-05-12 12:57:24,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 171 transitions, 1593 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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) [2024-05-12 12:57:24,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:57:24,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-05-12 12:57:24,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:57:26,351 INFO L124 PetriNetUnfolderBase]: 3775/7235 cut-off events. [2024-05-12 12:57:26,351 INFO L125 PetriNetUnfolderBase]: For 30105/30105 co-relation queries the response was YES. [2024-05-12 12:57:26,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28273 conditions, 7235 events. 3775/7235 cut-off events. For 30105/30105 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 44913 event pairs, 1378 based on Foata normal form. 57/7178 useless extension candidates. Maximal degree in co-relation 28223. Up to 4824 conditions per place. [2024-05-12 12:57:26,397 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 185 selfloop transitions, 40 changer transitions 14/246 dead transitions. [2024-05-12 12:57:26,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 246 transitions, 2549 flow [2024-05-12 12:57:26,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:57:26,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:57:26,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-05-12 12:57:26,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46540880503144655 [2024-05-12 12:57:26,398 INFO L175 Difference]: Start difference. First operand has 150 places, 171 transitions, 1593 flow. Second operand 9 states and 222 transitions. [2024-05-12 12:57:26,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 246 transitions, 2549 flow [2024-05-12 12:57:26,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 246 transitions, 2476 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-05-12 12:57:26,473 INFO L231 Difference]: Finished difference. Result has 160 places, 188 transitions, 1911 flow [2024-05-12 12:57:26,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1524, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1911, PETRI_PLACES=160, PETRI_TRANSITIONS=188} [2024-05-12 12:57:26,473 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 111 predicate places. [2024-05-12 12:57:26,473 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 188 transitions, 1911 flow [2024-05-12 12:57:26,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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) [2024-05-12 12:57:26,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:57:26,474 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] [2024-05-12 12:57:26,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-05-12 12:57:26,474 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:57:26,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:57:26,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1358205744, now seen corresponding path program 4 times [2024-05-12 12:57:26,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:57:26,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244508645] [2024-05-12 12:57:26,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:57:26,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:57:26,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:57:27,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:57:27,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:57:27,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244508645] [2024-05-12 12:57:27,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244508645] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:57:27,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:57:27,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:57:27,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721677365] [2024-05-12 12:57:27,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:57:27,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:57:27,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:57:27,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:57:27,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:57:27,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-05-12 12:57:27,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 188 transitions, 1911 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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) [2024-05-12 12:57:27,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:57:27,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-05-12 12:57:27,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:57:29,056 INFO L124 PetriNetUnfolderBase]: 3959/7583 cut-off events. [2024-05-12 12:57:29,057 INFO L125 PetriNetUnfolderBase]: For 46462/46462 co-relation queries the response was YES. [2024-05-12 12:57:29,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32322 conditions, 7583 events. 3959/7583 cut-off events. For 46462/46462 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 47867 event pairs, 1348 based on Foata normal form. 0/7478 useless extension candidates. Maximal degree in co-relation 32266. Up to 5057 conditions per place. [2024-05-12 12:57:29,107 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 208 selfloop transitions, 45 changer transitions 16/276 dead transitions. [2024-05-12 12:57:29,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 276 transitions, 3026 flow [2024-05-12 12:57:29,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 12:57:29,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 12:57:29,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 271 transitions. [2024-05-12 12:57:29,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4261006289308176 [2024-05-12 12:57:29,109 INFO L175 Difference]: Start difference. First operand has 160 places, 188 transitions, 1911 flow. Second operand 12 states and 271 transitions. [2024-05-12 12:57:29,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 276 transitions, 3026 flow [2024-05-12 12:57:29,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 276 transitions, 2951 flow, removed 34 selfloop flow, removed 1 redundant places. [2024-05-12 12:57:29,235 INFO L231 Difference]: Finished difference. Result has 172 places, 198 transitions, 2110 flow [2024-05-12 12:57:29,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1840, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2110, PETRI_PLACES=172, PETRI_TRANSITIONS=198} [2024-05-12 12:57:29,236 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 123 predicate places. [2024-05-12 12:57:29,236 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 198 transitions, 2110 flow [2024-05-12 12:57:29,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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) [2024-05-12 12:57:29,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:57:29,236 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] [2024-05-12 12:57:29,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-05-12 12:57:29,237 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:57:29,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:57:29,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1584125136, now seen corresponding path program 5 times [2024-05-12 12:57:29,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:57:29,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807137997] [2024-05-12 12:57:29,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:57:29,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:57:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:57:30,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:57:30,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:57:30,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807137997] [2024-05-12 12:57:30,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807137997] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:57:30,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:57:30,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:57:30,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60728404] [2024-05-12 12:57:30,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:57:30,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:57:30,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:57:30,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:57:30,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:57:30,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-05-12 12:57:30,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 198 transitions, 2110 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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) [2024-05-12 12:57:30,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:57:30,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-05-12 12:57:30,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:57:31,894 INFO L124 PetriNetUnfolderBase]: 3953/7601 cut-off events. [2024-05-12 12:57:31,894 INFO L125 PetriNetUnfolderBase]: For 51697/51699 co-relation queries the response was YES. [2024-05-12 12:57:31,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32660 conditions, 7601 events. 3953/7601 cut-off events. For 51697/51699 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 47913 event pairs, 1113 based on Foata normal form. 81/7577 useless extension candidates. Maximal degree in co-relation 32601. Up to 4026 conditions per place. [2024-05-12 12:57:31,944 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 191 selfloop transitions, 81 changer transitions 14/293 dead transitions. [2024-05-12 12:57:31,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 293 transitions, 3290 flow [2024-05-12 12:57:31,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 12:57:31,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 12:57:31,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 284 transitions. [2024-05-12 12:57:31,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44654088050314467 [2024-05-12 12:57:31,945 INFO L175 Difference]: Start difference. First operand has 172 places, 198 transitions, 2110 flow. Second operand 12 states and 284 transitions. [2024-05-12 12:57:31,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 293 transitions, 3290 flow [2024-05-12 12:57:32,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 293 transitions, 3148 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-05-12 12:57:32,070 INFO L231 Difference]: Finished difference. Result has 179 places, 206 transitions, 2351 flow [2024-05-12 12:57:32,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1969, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2351, PETRI_PLACES=179, PETRI_TRANSITIONS=206} [2024-05-12 12:57:32,071 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 130 predicate places. [2024-05-12 12:57:32,071 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 206 transitions, 2351 flow [2024-05-12 12:57:32,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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) [2024-05-12 12:57:32,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:57:32,071 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2024-05-12 12:57:32,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-05-12 12:57:32,072 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:57:32,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:57:32,072 INFO L85 PathProgramCache]: Analyzing trace with hash -707829399, now seen corresponding path program 1 times [2024-05-12 12:57:32,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:57:32,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246589909] [2024-05-12 12:57:32,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:57:32,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:57:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:57:33,161 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:57:33,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:57:33,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246589909] [2024-05-12 12:57:33,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246589909] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 12:57:33,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255067604] [2024-05-12 12:57:33,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:57:33,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:57:33,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:57:33,163 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) [2024-05-12 12:57:33,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-05-12 12:57:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:57:33,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 42 conjunts are in the unsatisfiable core [2024-05-12 12:57:33,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 12:57:33,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2024-05-12 12:57:33,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2024-05-12 12:57:33,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 107 [2024-05-12 12:57:33,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-05-12 12:57:33,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-05-12 12:57:33,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 123 [2024-05-12 12:57:33,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-05-12 12:57:33,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 45 [2024-05-12 12:57:33,962 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-05-12 12:57:34,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2024-05-12 12:57:34,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 32 [2024-05-12 12:57:34,273 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:57:34,273 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 12:57:34,827 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-05-12 12:57:34,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 18 [2024-05-12 12:57:34,839 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-05-12 12:57:34,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 22 [2024-05-12 12:57:36,577 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-05-12 12:57:36,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 22 [2024-05-12 12:57:36,619 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-05-12 12:57:36,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 18 [2024-05-12 12:57:37,898 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-05-12 12:57:37,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 3267 treesize of output 1962 [2024-05-12 12:57:42,325 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:57:42,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255067604] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 12:57:42,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 12:57:42,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2024-05-12 12:57:42,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731967324] [2024-05-12 12:57:42,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 12:57:42,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-05-12 12:57:42,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:57:42,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-05-12 12:57:42,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2024-05-12 12:57:46,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-05-12 12:57:46,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-05-12 12:57:46,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 206 transitions, 2351 flow. Second operand has 28 states, 28 states have (on average 12.857142857142858) internal successors, (360), 28 states have internal predecessors, (360), 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) [2024-05-12 12:57:46,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:57:46,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-05-12 12:57:46,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:57:51,578 INFO L124 PetriNetUnfolderBase]: 5513/10027 cut-off events. [2024-05-12 12:57:51,579 INFO L125 PetriNetUnfolderBase]: For 64736/64736 co-relation queries the response was YES. [2024-05-12 12:57:51,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42748 conditions, 10027 events. 5513/10027 cut-off events. For 64736/64736 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 63052 event pairs, 1591 based on Foata normal form. 79/10007 useless extension candidates. Maximal degree in co-relation 42686. Up to 6683 conditions per place. [2024-05-12 12:57:51,650 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 272 selfloop transitions, 78 changer transitions 4/359 dead transitions. [2024-05-12 12:57:51,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 359 transitions, 4322 flow [2024-05-12 12:57:51,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:57:51,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:57:51,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 233 transitions. [2024-05-12 12:57:51,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3996569468267582 [2024-05-12 12:57:51,652 INFO L175 Difference]: Start difference. First operand has 179 places, 206 transitions, 2351 flow. Second operand 11 states and 233 transitions. [2024-05-12 12:57:51,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 359 transitions, 4322 flow [2024-05-12 12:57:51,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 359 transitions, 4167 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-05-12 12:57:51,873 INFO L231 Difference]: Finished difference. Result has 187 places, 251 transitions, 3263 flow [2024-05-12 12:57:51,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2222, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3263, PETRI_PLACES=187, PETRI_TRANSITIONS=251} [2024-05-12 12:57:51,874 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 138 predicate places. [2024-05-12 12:57:51,874 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 251 transitions, 3263 flow [2024-05-12 12:57:51,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 12.857142857142858) internal successors, (360), 28 states have internal predecessors, (360), 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) [2024-05-12 12:57:51,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:57:51,875 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2024-05-12 12:57:51,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-05-12 12:57:52,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:57:52,087 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:57:52,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:57:52,087 INFO L85 PathProgramCache]: Analyzing trace with hash 268637717, now seen corresponding path program 2 times [2024-05-12 12:57:52,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:57:52,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941627361] [2024-05-12 12:57:52,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:57:52,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:57:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:57:53,090 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:57:53,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:57:53,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941627361] [2024-05-12 12:57:53,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941627361] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 12:57:53,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661467465] [2024-05-12 12:57:53,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-05-12 12:57:53,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:57:53,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:57:53,109 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) [2024-05-12 12:57:53,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-05-12 12:57:53,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-05-12 12:57:53,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-12 12:57:53,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 37 conjunts are in the unsatisfiable core [2024-05-12 12:57:53,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 12:57:53,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2024-05-12 12:57:53,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2024-05-12 12:57:53,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 131 [2024-05-12 12:57:53,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 16 [2024-05-12 12:57:53,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-05-12 12:57:53,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 55 [2024-05-12 12:57:53,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 49 [2024-05-12 12:57:54,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 126 [2024-05-12 12:57:54,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 104 [2024-05-12 12:57:54,701 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:57:54,701 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 12:57:54,976 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-05-12 12:57:54,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 22 [2024-05-12 12:57:54,996 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-05-12 12:57:54,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 18 [2024-05-12 12:57:57,171 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-05-12 12:57:57,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 18 [2024-05-12 12:57:57,180 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-05-12 12:57:57,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 22 [2024-05-12 12:57:59,929 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:57:59,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661467465] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 12:57:59,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 12:57:59,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2024-05-12 12:57:59,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462759018] [2024-05-12 12:57:59,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 12:57:59,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-05-12 12:57:59,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:57:59,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-05-12 12:57:59,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2024-05-12 12:58:00,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-05-12 12:58:00,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 251 transitions, 3263 flow. Second operand has 28 states, 28 states have (on average 13.75) internal successors, (385), 28 states have internal predecessors, (385), 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) [2024-05-12 12:58:00,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:58:00,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-05-12 12:58:00,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:58:08,974 INFO L124 PetriNetUnfolderBase]: 4610/8694 cut-off events. [2024-05-12 12:58:08,975 INFO L125 PetriNetUnfolderBase]: For 79272/79274 co-relation queries the response was YES. [2024-05-12 12:58:09,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41862 conditions, 8694 events. 4610/8694 cut-off events. For 79272/79274 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 55658 event pairs, 968 based on Foata normal form. 32/8627 useless extension candidates. Maximal degree in co-relation 41795. Up to 4156 conditions per place. [2024-05-12 12:58:09,038 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 252 selfloop transitions, 125 changer transitions 15/398 dead transitions. [2024-05-12 12:58:09,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 398 transitions, 5373 flow [2024-05-12 12:58:09,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-05-12 12:58:09,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-05-12 12:58:09,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 316 transitions. [2024-05-12 12:58:09,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42587601078167114 [2024-05-12 12:58:09,040 INFO L175 Difference]: Start difference. First operand has 187 places, 251 transitions, 3263 flow. Second operand 14 states and 316 transitions. [2024-05-12 12:58:09,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 398 transitions, 5373 flow [2024-05-12 12:58:09,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 398 transitions, 5304 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-05-12 12:58:09,292 INFO L231 Difference]: Finished difference. Result has 199 places, 282 transitions, 4130 flow [2024-05-12 12:58:09,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3198, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4130, PETRI_PLACES=199, PETRI_TRANSITIONS=282} [2024-05-12 12:58:09,293 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 150 predicate places. [2024-05-12 12:58:09,293 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 282 transitions, 4130 flow [2024-05-12 12:58:09,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 13.75) internal successors, (385), 28 states have internal predecessors, (385), 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) [2024-05-12 12:58:09,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:58:09,293 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2024-05-12 12:58:09,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-05-12 12:58:09,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:58:09,506 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:58:09,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:58:09,507 INFO L85 PathProgramCache]: Analyzing trace with hash -2040697015, now seen corresponding path program 3 times [2024-05-12 12:58:09,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:58:09,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9768777] [2024-05-12 12:58:09,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:58:09,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:58:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:58:10,535 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:58:10,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:58:10,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9768777] [2024-05-12 12:58:10,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9768777] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 12:58:10,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592673248] [2024-05-12 12:58:10,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-05-12 12:58:10,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:58:10,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:58:10,552 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) [2024-05-12 12:58:10,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-05-12 12:58:11,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-05-12 12:58:11,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-12 12:58:11,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 37 conjunts are in the unsatisfiable core [2024-05-12 12:58:11,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 12:58:11,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2024-05-12 12:58:11,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2024-05-12 12:58:11,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 131 [2024-05-12 12:58:11,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-05-12 12:58:11,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2024-05-12 12:58:11,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 71 [2024-05-12 12:58:11,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 114 [2024-05-12 12:58:11,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 108 [2024-05-12 12:58:12,050 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:58:12,050 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 12:58:12,281 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-05-12 12:58:12,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 18 [2024-05-12 12:58:12,305 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-05-12 12:58:12,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 22 [2024-05-12 12:58:13,299 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-05-12 12:58:13,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 22 [2024-05-12 12:58:13,348 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-05-12 12:58:13,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 18 [2024-05-12 12:58:28,610 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:58:28,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592673248] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 12:58:28,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 12:58:28,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2024-05-12 12:58:28,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328007035] [2024-05-12 12:58:28,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 12:58:28,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-05-12 12:58:28,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:58:28,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-05-12 12:58:28,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=625, Unknown=2, NotChecked=0, Total=756 [2024-05-12 12:58:32,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-05-12 12:58:33,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-05-12 12:58:33,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 282 transitions, 4130 flow. Second operand has 28 states, 28 states have (on average 12.964285714285714) internal successors, (363), 28 states have internal predecessors, (363), 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) [2024-05-12 12:58:33,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:58:33,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-05-12 12:58:33,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:58:40,744 INFO L124 PetriNetUnfolderBase]: 6070/10882 cut-off events. [2024-05-12 12:58:40,744 INFO L125 PetriNetUnfolderBase]: For 105562/105562 co-relation queries the response was YES. [2024-05-12 12:58:40,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54006 conditions, 10882 events. 6070/10882 cut-off events. For 105562/105562 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 68800 event pairs, 1868 based on Foata normal form. 38/10792 useless extension candidates. Maximal degree in co-relation 53934. Up to 7818 conditions per place. [2024-05-12 12:58:40,825 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 295 selfloop transitions, 66 changer transitions 15/381 dead transitions. [2024-05-12 12:58:40,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 381 transitions, 5522 flow [2024-05-12 12:58:40,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 12:58:40,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 12:58:40,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 260 transitions. [2024-05-12 12:58:40,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088050314465409 [2024-05-12 12:58:40,827 INFO L175 Difference]: Start difference. First operand has 199 places, 282 transitions, 4130 flow. Second operand 12 states and 260 transitions. [2024-05-12 12:58:40,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 381 transitions, 5522 flow [2024-05-12 12:58:41,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 381 transitions, 5345 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-05-12 12:58:41,183 INFO L231 Difference]: Finished difference. Result has 203 places, 290 transitions, 4253 flow [2024-05-12 12:58:41,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3959, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4253, PETRI_PLACES=203, PETRI_TRANSITIONS=290} [2024-05-12 12:58:41,183 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 154 predicate places. [2024-05-12 12:58:41,183 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 290 transitions, 4253 flow [2024-05-12 12:58:41,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 12.964285714285714) internal successors, (363), 28 states have internal predecessors, (363), 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) [2024-05-12 12:58:41,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:58:41,184 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] [2024-05-12 12:58:41,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-05-12 12:58:41,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:58:41,398 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:58:41,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:58:41,398 INFO L85 PathProgramCache]: Analyzing trace with hash 29218766, now seen corresponding path program 1 times [2024-05-12 12:58:41,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:58:41,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320102355] [2024-05-12 12:58:41,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:58:41,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:58:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-05-12 12:58:41,512 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-05-12 12:58:41,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-05-12 12:58:41,595 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-05-12 12:58:41,595 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-05-12 12:58:41,596 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (8 of 9 remaining) [2024-05-12 12:58:41,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2024-05-12 12:58:41,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 9 remaining) [2024-05-12 12:58:41,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 9 remaining) [2024-05-12 12:58:41,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2024-05-12 12:58:41,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 9 remaining) [2024-05-12 12:58:41,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 9 remaining) [2024-05-12 12:58:41,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2024-05-12 12:58:41,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2024-05-12 12:58:41,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-05-12 12:58:41,599 INFO L445 BasicCegarLoop]: Path program histogram: [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:58:41,603 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-05-12 12:58:41,603 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-05-12 12:58:41,639 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,639 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,639 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,639 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,639 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,639 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,639 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,639 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,640 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,640 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,640 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,640 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,640 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,640 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,640 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,640 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,640 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,640 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,640 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,640 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,640 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,640 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,641 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,641 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,641 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,641 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,641 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,641 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,641 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,641 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,641 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,641 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,641 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,642 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,642 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,642 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,642 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,642 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,642 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,642 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,642 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,642 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,642 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,643 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,643 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,643 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,643 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,643 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,643 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,643 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,643 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,643 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,643 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,644 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,644 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,644 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,644 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,644 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,644 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,644 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,644 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,644 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,644 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,645 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,645 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,645 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,645 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,645 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,645 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,645 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,645 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,645 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,645 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,646 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,646 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,646 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,646 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,646 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,646 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,646 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,646 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,646 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,646 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,647 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,647 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,647 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,647 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,647 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,647 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,647 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,647 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,647 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-05-12 12:58:41,655 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: The program execution was not completely translated back. [2024-05-12 12:58:41,661 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-05-12 12:58:41,662 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-05-12 12:58:41,662 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.05 12:58:41 BasicIcfg [2024-05-12 12:58:41,662 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-05-12 12:58:41,662 INFO L158 Benchmark]: Toolchain (without parser) took 108552.08ms. Allocated memory was 161.5MB in the beginning and 2.6GB in the end (delta: 2.5GB). Free memory was 125.7MB in the beginning and 1.1GB in the end (delta: -995.2MB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2024-05-12 12:58:41,663 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 125.8MB. Free memory is still 88.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 12:58:41,663 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 161.5MB. Free memory is still 128.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 12:58:41,663 INFO L158 Benchmark]: CACSL2BoogieTranslator took 612.85ms. Allocated memory is still 161.5MB. Free memory was 125.0MB in the beginning and 84.4MB in the end (delta: 40.6MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2024-05-12 12:58:41,663 INFO L158 Benchmark]: Boogie Procedure Inliner took 108.55ms. Allocated memory is still 161.5MB. Free memory was 84.4MB in the beginning and 78.8MB in the end (delta: 5.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-05-12 12:58:41,663 INFO L158 Benchmark]: Boogie Preprocessor took 71.99ms. Allocated memory is still 161.5MB. Free memory was 78.8MB in the beginning and 121.7MB in the end (delta: -42.9MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. [2024-05-12 12:58:41,664 INFO L158 Benchmark]: RCFGBuilder took 2487.12ms. Allocated memory was 161.5MB in the beginning and 352.3MB in the end (delta: 190.8MB). Free memory was 121.7MB in the beginning and 260.3MB in the end (delta: -138.6MB). Peak memory consumption was 247.2MB. Max. memory is 16.1GB. [2024-05-12 12:58:41,664 INFO L158 Benchmark]: TraceAbstraction took 105265.92ms. Allocated memory was 352.3MB in the beginning and 2.6GB in the end (delta: 2.3GB). Free memory was 260.3MB in the beginning and 1.1GB in the end (delta: -860.6MB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2024-05-12 12:58:41,665 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 125.8MB. Free memory is still 88.7MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.14ms. Allocated memory is still 161.5MB. Free memory is still 128.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 612.85ms. Allocated memory is still 161.5MB. Free memory was 125.0MB in the beginning and 84.4MB in the end (delta: 40.6MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 108.55ms. Allocated memory is still 161.5MB. Free memory was 84.4MB in the beginning and 78.8MB in the end (delta: 5.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.99ms. Allocated memory is still 161.5MB. Free memory was 78.8MB in the beginning and 121.7MB in the end (delta: -42.9MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. * RCFGBuilder took 2487.12ms. Allocated memory was 161.5MB in the beginning and 352.3MB in the end (delta: 190.8MB). Free memory was 121.7MB in the beginning and 260.3MB in the end (delta: -138.6MB). Peak memory consumption was 247.2MB. Max. memory is 16.1GB. * TraceAbstraction took 105265.92ms. Allocated memory was 352.3MB in the beginning and 2.6GB in the end (delta: 2.3GB). Free memory was 260.3MB in the beginning and 1.1GB in the end (delta: -860.6MB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1043]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1] 0 //@ ghost int m_locked = 0; [L1] 0 //@ ghost int multithreaded = 0; [L947] 0 pthread_mutex_t m; [L947] 0 pthread_mutex_t m; [L947] 0 pthread_mutex_t m; [L947] 0 pthread_mutex_t m; [L947] 0 pthread_mutex_t m; [L947] 0 pthread_mutex_t m; [L949] 0 int stored_elements[(20)]; [L949] 0 int stored_elements[(20)]; [L950] 0 _Bool enqueue_flag, dequeue_flag; [L951] 0 QType queue; [L951] 0 QType queue; [L1054] 0 pthread_t id1, id2; [L1055] 0 enqueue_flag=(1) [L1056] 0 dequeue_flag=(0) [L1057] CALL 0 init(&queue) [L954] 0 q->head=0 [L955] 0 q->tail=0 [L956] 0 q->amount=0 [L1057] RET 0 init(&queue) [L1058] CALL, EXPR 0 empty(&queue) [L960] EXPR 0 q->head [L960] EXPR 0 q->tail [L960] COND TRUE 0 q->head == q->tail [L963] 0 return (-1); [L1058] RET, EXPR 0 empty(&queue) [L1058] COND FALSE 0 !(!empty(&queue)==(-1)) [L1063] 0 //@ ghost multithreaded = 1; [L1063] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, &queue) VAL [dequeue_flag=0, enqueue_flag=1, id1={22:0}, id2={21:0}, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1007] 1 int value, i; VAL [\old(arg)={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1064] 0 //@ assert (!multithreaded || ((((0 <= (queue).head) && (0 <= (queue).tail)) && ((queue).head <= 20)) && ((queue).tail <= 20))); [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, &queue) VAL [dequeue_flag=0, enqueue_flag=1, id1={22:0}, id2={21:0}, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1036] 2 int i; [L1037] 2 i=0 VAL [\old(arg)={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1037] COND TRUE 2 i<(20) VAL [\old(arg)={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1039] 2 //@ ghost m_locked = 1; [L1040] COND FALSE 2 !(\read(dequeue_flag)) VAL [dequeue_flag=0, enqueue_flag=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1048] 2 //@ ghost m_locked = 0; [L1008] 1 //@ ghost m_locked = 1; [L1037] 2 i++ VAL [\old(arg)={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1009] 1 value = __VERIFIER_nondet_int() [L1010] CALL 1 enqueue(&queue,value) [L980] EXPR 1 q->tail [L980] 1 q->element[q->tail] = x [L981] EXPR 1 q->amount [L981] 1 q->amount++ [L981] 1 q->amount++ [L982] EXPR 1 q->tail [L982] COND FALSE 1 !(q->tail == (20)) [L988] EXPR 1 q->tail [L988] 1 q->tail++ [L988] 1 q->tail++ [L990] 1 return 0; [L1010] RET 1 enqueue(&queue,value) [L1010] COND FALSE 1 !(enqueue(&queue,value)) [L1013] 1 stored_elements[0]=value [L1014] CALL 1 empty(&queue) [L960] EXPR 1 q->head [L960] EXPR 1 q->tail [L960] COND FALSE 1 !(q->head == q->tail) [L966] 1 return 0; [L1014] RET 1 empty(&queue) [L1014] COND FALSE 1 !(empty(&queue)) [L1017] 1 //@ ghost m_locked = 0; [L1018] 1 i=0 VAL [\old(arg)={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}, value=-2] [L1018] COND TRUE 1 i<((20)-1) VAL [\old(arg)={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}, value=-2] [L1020] 1 //@ ghost m_locked = 1; [L1021] COND TRUE 1 \read(enqueue_flag) [L1023] 1 value = __VERIFIER_nondet_int() [L1024] CALL 1 enqueue(&queue,value) [L980] EXPR 1 q->tail [L980] 1 q->element[q->tail] = x [L981] EXPR 1 q->amount [L981] 1 q->amount++ [L981] 1 q->amount++ [L982] EXPR 1 q->tail [L982] COND FALSE 1 !(q->tail == (20)) [L988] EXPR 1 q->tail [L988] 1 q->tail++ [L988] 1 q->tail++ [L990] 1 return 0; [L1024] RET 1 enqueue(&queue,value) [L1025] 1 stored_elements[i+1]=value [L1026] 1 enqueue_flag=(0) [L1027] 1 dequeue_flag=(1) VAL [\old(arg)={5:0}, arg={5:0}, dequeue_flag=1, enqueue_flag=0, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}, value=0] [L1029] 1 //@ ghost m_locked = 0; [L1037] COND TRUE 2 i<(20) VAL [\old(arg)={5:0}, arg={5:0}, dequeue_flag=1, enqueue_flag=0, i=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1039] 2 //@ ghost m_locked = 1; [L1040] COND TRUE 2 \read(dequeue_flag) [L1042] CALL, EXPR 2 dequeue(&queue) [L994] 2 int x; [L995] EXPR 2 q->head [L995] EXPR 2 q->element[q->head] [L995] 2 x = q->element[q->head] [L996] EXPR 2 q->amount [L996] 2 q->amount-- [L996] 2 q->amount-- [L997] EXPR 2 q->head [L997] COND FALSE 2 !(q->head == (20)) [L1002] EXPR 2 q->head [L1002] 2 q->head++ [L1002] 2 q->head++ [L1003] 2 return x; [L1042] RET, EXPR 2 dequeue(&queue) [L1042] EXPR 2 stored_elements[i] VAL [\old(arg)={5:0}, arg={5:0}, dequeue_flag=1, enqueue_flag=0, i=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1042] COND TRUE 2 !dequeue(&queue)==stored_elements[i] [L1043] 2 reach_error() VAL [\old(arg)={5:0}, arg={5:0}, dequeue_flag=1, enqueue_flag=0, i=1, m={3:0}, queue={5:0}, stored_elements={4:0}] - UnprovableResult [Line: 1059]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 1065]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 77 locations, 9 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: 105.1s, OverallIterations: 22, TraceHistogramMax: 2, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 51.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 2371 SdHoareTripleChecker+Valid, 28.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2333 mSDsluCounter, 960 SdHoareTripleChecker+Invalid, 27.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 930 mSDsCounter, 79 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10385 IncrementalHoareTripleChecker+Invalid, 10466 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 79 mSolverCounterUnsat, 30 mSDtfsCounter, 10385 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 450 GetRequests, 191 SyntacticMatches, 24 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1697 ImplicationChecksByTransitivity, 23.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4253occurred in iteration=21, InterpolantAutomatonStates: 188, 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: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 47.8s InterpolantComputationTime, 583 NumberOfCodeBlocks, 583 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 660 ConstructedInterpolants, 92 QuantifiedInterpolants, 70330 SizeOfPredicates, 200 NumberOfNonLiveVariables, 3564 ConjunctsInSsa, 169 ConjunctsInUnsatCore, 31 InterpolantComputations, 16 PerfectInterpolantSequences, 0/54 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 RESULT: Ultimate proved your program to be incorrect! [2024-05-12 12:58:41,714 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE