./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/36-apron_21-traces-cluster-based_true.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i ./goblint.2024-06-19_11-23-25.files/protection/36-apron_21-traces-cluster-based_true.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:01:54,326 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:01:54,412 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:01:54,435 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:01:54,436 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:01:54,469 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:01:54,469 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:01:54,470 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:01:54,470 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:01:54,474 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:01:54,474 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:01:54,474 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:01:54,475 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:01:54,476 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:01:54,476 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:01:54,477 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:01:54,477 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:01:54,477 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:01:54,477 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:01:54,477 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:01:54,478 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:01:54,478 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:01:54,478 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:01:54,478 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:01:54,479 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:01:54,479 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:01:54,479 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:01:54,479 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:01:54,480 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:01:54,480 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:01:54,481 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:01:54,481 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:01:54,481 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:01:54,481 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:01:54,482 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:01:54,482 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:01:54,482 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:01:54,482 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:01:54,482 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:01:54,483 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:01:54,483 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:01:54,483 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:01:54,483 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:01:54,483 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:01:54,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:01:54,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:01:54,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:01:54,852 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:01:54,853 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:01:54,853 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i [2024-06-27 18:01:56,021 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:01:56,221 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:01:56,221 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i [2024-06-27 18:01:56,234 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c72f5339f/7c8210be6d924a84b7e86b00633b9ee6/FLAG86ba1c3d1 [2024-06-27 18:01:56,259 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c72f5339f/7c8210be6d924a84b7e86b00633b9ee6 [2024-06-27 18:01:56,261 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:01:56,262 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:01:56,262 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/36-apron_21-traces-cluster-based_true.yml/witness.yml [2024-06-27 18:01:56,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:01:56,402 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:01:56,404 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:01:56,404 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:01:56,408 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:01:56,409 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:01:56" (1/2) ... [2024-06-27 18:01:56,410 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62e95fac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:01:56, skipping insertion in model container [2024-06-27 18:01:56,410 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:01:56" (1/2) ... [2024-06-27 18:01:56,412 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7498f1f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:01:56, skipping insertion in model container [2024-06-27 18:01:56,413 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:01:56" (2/2) ... [2024-06-27 18:01:56,413 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62e95fac and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:01:56, skipping insertion in model container [2024-06-27 18:01:56,413 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:01:56" (2/2) ... [2024-06-27 18:01:56,413 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:01:56,460 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:01:56,462 INFO L97 edCorrectnessWitness]: Location invariant before [L729-L729] (! multithreaded || -1016 <= h) && (! multithreaded || -999 <= g) [2024-06-27 18:01:56,462 INFO L97 edCorrectnessWitness]: Location invariant before [L730-L730] (! multithreaded || -1016 <= h) && (! multithreaded || -999 <= g) [2024-06-27 18:01:56,462 INFO L97 edCorrectnessWitness]: Location invariant before [L728-L728] (! multithreaded || -1016 <= h) && (! multithreaded || -999 <= g) [2024-06-27 18:01:56,462 INFO L103 edCorrectnessWitness]: ghost_variable B_locked = 0 [2024-06-27 18:01:56,463 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:01:56,463 INFO L103 edCorrectnessWitness]: ghost_variable A_locked = 0 [2024-06-27 18:01:56,464 INFO L106 edCorrectnessWitness]: ghost_update [L736-L736] A_locked = 0; [2024-06-27 18:01:56,464 INFO L106 edCorrectnessWitness]: ghost_update [L733-L733] B_locked = 1; [2024-06-27 18:01:56,464 INFO L106 edCorrectnessWitness]: ghost_update [L715-L715] A_locked = 1; [2024-06-27 18:01:56,464 INFO L106 edCorrectnessWitness]: ghost_update [L714-L714] B_locked = 1; [2024-06-27 18:01:56,464 INFO L106 edCorrectnessWitness]: ghost_update [L689-L689] B_locked = 1; [2024-06-27 18:01:56,465 INFO L106 edCorrectnessWitness]: ghost_update [L730-L730] A_locked = 1; [2024-06-27 18:01:56,465 INFO L106 edCorrectnessWitness]: ghost_update [L704-L704] A_locked = 1; [2024-06-27 18:01:56,465 INFO L106 edCorrectnessWitness]: ghost_update [L694-L694] A_locked = 1; [2024-06-27 18:01:56,465 INFO L106 edCorrectnessWitness]: ghost_update [L718-L718] A_locked = 0; [2024-06-27 18:01:56,465 INFO L106 edCorrectnessWitness]: ghost_update [L697-L697] B_locked = 0; [2024-06-27 18:01:56,465 INFO L106 edCorrectnessWitness]: ghost_update [L707-L707] A_locked = 0; [2024-06-27 18:01:56,466 INFO L106 edCorrectnessWitness]: ghost_update [L719-L719] B_locked = 0; [2024-06-27 18:01:56,466 INFO L106 edCorrectnessWitness]: ghost_update [L693-L693] A_locked = 0; [2024-06-27 18:01:56,466 INFO L106 edCorrectnessWitness]: ghost_update [L727-L727] multithreaded = 1; [2024-06-27 18:01:56,466 INFO L106 edCorrectnessWitness]: ghost_update [L696-L696] A_locked = 0; [2024-06-27 18:01:56,467 INFO L106 edCorrectnessWitness]: ghost_update [L735-L735] B_locked = 0; [2024-06-27 18:01:56,467 INFO L106 edCorrectnessWitness]: ghost_update [L690-L690] A_locked = 1; [2024-06-27 18:01:56,509 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:01:56,690 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i[1092,1105] [2024-06-27 18:01:56,839 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:01:56,862 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:01:56,895 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i[1092,1105] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:01:56,929 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:01:56,971 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:01:56,971 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:01:56 WrapperNode [2024-06-27 18:01:56,971 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:01:56,972 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:01:56,972 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:01:56,972 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:01:56,977 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:01:56" (1/1) ... [2024-06-27 18:01:56,986 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:01:56" (1/1) ... [2024-06-27 18:01:57,003 INFO L138 Inliner]: procedures = 165, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 155 [2024-06-27 18:01:57,003 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:01:57,004 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:01:57,004 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:01:57,004 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:01:57,012 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:01:56" (1/1) ... [2024-06-27 18:01:57,012 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:01:56" (1/1) ... [2024-06-27 18:01:57,014 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:01:56" (1/1) ... [2024-06-27 18:01:57,042 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 5, 5]. 42 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 0 writes are split as follows [0, 0, 0]. [2024-06-27 18:01:57,042 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:01:56" (1/1) ... [2024-06-27 18:01:57,042 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:01:56" (1/1) ... [2024-06-27 18:01:57,050 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:01:56" (1/1) ... [2024-06-27 18:01:57,052 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:01:56" (1/1) ... [2024-06-27 18:01:57,053 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:01:56" (1/1) ... [2024-06-27 18:01:57,053 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:01:56" (1/1) ... [2024-06-27 18:01:57,055 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:01:57,056 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:01:57,056 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:01:57,056 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:01:57,057 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:01:56" (1/1) ... [2024-06-27 18:01:57,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:01:57,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:01:57,091 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) [2024-06-27 18:01:57,093 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 [2024-06-27 18:01:57,138 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-06-27 18:01:57,138 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-06-27 18:01:57,139 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-27 18:01:57,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:01:57,139 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2024-06-27 18:01:57,139 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2024-06-27 18:01:57,139 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-06-27 18:01:57,152 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-06-27 18:01:57,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:01:57,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 18:01:57,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-06-27 18:01:57,155 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-27 18:01:57,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:01:57,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:01:57,161 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 18:01:57,256 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:01:57,257 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:01:57,438 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:01:57,438 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:01:57,546 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:01:57,546 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:01:57,547 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:01:57 BoogieIcfgContainer [2024-06-27 18:01:57,547 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:01:57,548 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:01:57,548 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:01:57,551 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:01:57,551 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:01:56" (1/4) ... [2024-06-27 18:01:57,551 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1558fb9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:01:57, skipping insertion in model container [2024-06-27 18:01:57,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:01:56" (2/4) ... [2024-06-27 18:01:57,552 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1558fb9f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:01:57, skipping insertion in model container [2024-06-27 18:01:57,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:01:56" (3/4) ... [2024-06-27 18:01:57,552 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1558fb9f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:01:57, skipping insertion in model container [2024-06-27 18:01:57,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:01:57" (4/4) ... [2024-06-27 18:01:57,553 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_21-traces-cluster-based_true.i [2024-06-27 18:01:57,565 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:01:57,566 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-06-27 18:01:57,566 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:01:57,611 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:01:57,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 75 transitions, 162 flow [2024-06-27 18:01:57,681 INFO L124 PetriNetUnfolderBase]: 5/72 cut-off events. [2024-06-27 18:01:57,681 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:01:57,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 5/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 155 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2024-06-27 18:01:57,685 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 75 transitions, 162 flow [2024-06-27 18:01:57,689 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 72 transitions, 153 flow [2024-06-27 18:01:57,700 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:01:57,706 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;@fa248a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:01:57,706 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-06-27 18:01:57,710 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:01:57,710 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:01:57,710 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:01:57,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:01:57,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:01:57,711 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-06-27 18:01:57,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:01:57,719 INFO L85 PathProgramCache]: Analyzing trace with hash 412018404, now seen corresponding path program 1 times [2024-06-27 18:01:57,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:01:57,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362178045] [2024-06-27 18:01:57,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:57,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:01:57,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:58,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:58,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:58,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362178045] [2024-06-27 18:01:58,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362178045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:01:58,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:01:58,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:01:58,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578534531] [2024-06-27 18:01:58,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:01:58,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:01:58,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:58,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:01:58,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:01:58,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 75 [2024-06-27 18:01:58,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 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) [2024-06-27 18:01:58,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:58,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 75 [2024-06-27 18:01:58,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:00,932 INFO L124 PetriNetUnfolderBase]: 23106/37549 cut-off events. [2024-06-27 18:02:00,933 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-06-27 18:02:01,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69956 conditions, 37549 events. 23106/37549 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 1082. Compared 299048 event pairs, 9120 based on Foata normal form. 4044/40504 useless extension candidates. Maximal degree in co-relation 69944. Up to 19929 conditions per place. [2024-06-27 18:02:01,313 INFO L140 encePairwiseOnDemand]: 66/75 looper letters, 74 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2024-06-27 18:02:01,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 99 transitions, 365 flow [2024-06-27 18:02:01,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:02:01,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:02:01,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 165 transitions. [2024-06-27 18:02:01,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2024-06-27 18:02:01,326 INFO L175 Difference]: Start difference. First operand has 77 places, 72 transitions, 153 flow. Second operand 3 states and 165 transitions. [2024-06-27 18:02:01,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 99 transitions, 365 flow [2024-06-27 18:02:01,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 99 transitions, 360 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:02:01,337 INFO L231 Difference]: Finished difference. Result has 77 places, 68 transitions, 154 flow [2024-06-27 18:02:01,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=77, PETRI_TRANSITIONS=68} [2024-06-27 18:02:01,342 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 0 predicate places. [2024-06-27 18:02:01,342 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 68 transitions, 154 flow [2024-06-27 18:02:01,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 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) [2024-06-27 18:02:01,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:01,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:01,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:02:01,343 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-06-27 18:02:01,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:01,344 INFO L85 PathProgramCache]: Analyzing trace with hash -595804576, now seen corresponding path program 1 times [2024-06-27 18:02:01,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:01,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073441645] [2024-06-27 18:02:01,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:01,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:01,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:02:01,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:01,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073441645] [2024-06-27 18:02:01,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073441645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:01,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:01,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:02:01,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213950767] [2024-06-27 18:02:01,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:01,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:02:01,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:01,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:02:01,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:02:01,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 75 [2024-06-27 18:02:01,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2024-06-27 18:02:01,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:01,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 75 [2024-06-27 18:02:01,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:05,110 INFO L124 PetriNetUnfolderBase]: 25632/41076 cut-off events. [2024-06-27 18:02:05,110 INFO L125 PetriNetUnfolderBase]: For 426/426 co-relation queries the response was YES. [2024-06-27 18:02:05,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78412 conditions, 41076 events. 25632/41076 cut-off events. For 426/426 co-relation queries the response was YES. Maximal size of possible extension queue 1110. Compared 321344 event pairs, 6812 based on Foata normal form. 497/40084 useless extension candidates. Maximal degree in co-relation 78400. Up to 25990 conditions per place. [2024-06-27 18:02:05,702 INFO L140 encePairwiseOnDemand]: 70/75 looper letters, 73 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2024-06-27 18:02:05,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 96 transitions, 358 flow [2024-06-27 18:02:05,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:02:05,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:02:05,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 174 transitions. [2024-06-27 18:02:05,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.58 [2024-06-27 18:02:05,722 INFO L175 Difference]: Start difference. First operand has 77 places, 68 transitions, 154 flow. Second operand 4 states and 174 transitions. [2024-06-27 18:02:05,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 96 transitions, 358 flow [2024-06-27 18:02:05,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 96 transitions, 352 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:02:05,872 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 140 flow [2024-06-27 18:02:05,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2024-06-27 18:02:05,873 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -3 predicate places. [2024-06-27 18:02:05,879 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 140 flow [2024-06-27 18:02:05,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2024-06-27 18:02:05,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:05,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:05,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:02:05,881 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-06-27 18:02:05,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:05,884 INFO L85 PathProgramCache]: Analyzing trace with hash -548424192, now seen corresponding path program 1 times [2024-06-27 18:02:05,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:05,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123958017] [2024-06-27 18:02:05,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:05,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:05,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:06,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:02:06,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:06,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123958017] [2024-06-27 18:02:06,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123958017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:06,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:06,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:02:06,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545812909] [2024-06-27 18:02:06,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:06,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:02:06,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:06,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:02:06,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:02:06,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 75 [2024-06-27 18:02:06,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 140 flow. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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) [2024-06-27 18:02:06,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:06,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 75 [2024-06-27 18:02:06,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:09,590 INFO L124 PetriNetUnfolderBase]: 30934/47364 cut-off events. [2024-06-27 18:02:09,590 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:02:09,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90846 conditions, 47364 events. 30934/47364 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1218. Compared 356909 event pairs, 7222 based on Foata normal form. 0/46323 useless extension candidates. Maximal degree in co-relation 90835. Up to 11427 conditions per place. [2024-06-27 18:02:09,867 INFO L140 encePairwiseOnDemand]: 68/75 looper letters, 199 selfloop transitions, 11 changer transitions 0/231 dead transitions. [2024-06-27 18:02:09,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 231 transitions, 906 flow [2024-06-27 18:02:09,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:02:09,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:02:09,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 428 transitions. [2024-06-27 18:02:09,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7133333333333334 [2024-06-27 18:02:09,871 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 140 flow. Second operand 8 states and 428 transitions. [2024-06-27 18:02:09,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 231 transitions, 906 flow [2024-06-27 18:02:09,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 231 transitions, 903 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:02:09,874 INFO L231 Difference]: Finished difference. Result has 83 places, 73 transitions, 198 flow [2024-06-27 18:02:09,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=198, PETRI_PLACES=83, PETRI_TRANSITIONS=73} [2024-06-27 18:02:09,875 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 6 predicate places. [2024-06-27 18:02:09,875 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 73 transitions, 198 flow [2024-06-27 18:02:09,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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) [2024-06-27 18:02:09,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:09,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:09,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:02:09,876 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-06-27 18:02:09,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:09,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1544497675, now seen corresponding path program 1 times [2024-06-27 18:02:09,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:09,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146123441] [2024-06-27 18:02:09,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:09,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:10,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:02:10,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:10,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146123441] [2024-06-27 18:02:10,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146123441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:10,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:10,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:02:10,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982705405] [2024-06-27 18:02:10,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:10,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:02:10,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:10,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:02:10,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:02:10,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 75 [2024-06-27 18:02:10,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 73 transitions, 198 flow. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 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) [2024-06-27 18:02:10,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:10,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 75 [2024-06-27 18:02:10,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:15,199 INFO L124 PetriNetUnfolderBase]: 46706/71614 cut-off events. [2024-06-27 18:02:15,199 INFO L125 PetriNetUnfolderBase]: For 14383/14383 co-relation queries the response was YES. [2024-06-27 18:02:15,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152948 conditions, 71614 events. 46706/71614 cut-off events. For 14383/14383 co-relation queries the response was YES. Maximal size of possible extension queue 1931. Compared 564971 event pairs, 9974 based on Foata normal form. 0/70219 useless extension candidates. Maximal degree in co-relation 152933. Up to 27836 conditions per place. [2024-06-27 18:02:15,874 INFO L140 encePairwiseOnDemand]: 64/75 looper letters, 197 selfloop transitions, 17 changer transitions 0/234 dead transitions. [2024-06-27 18:02:15,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 234 transitions, 1075 flow [2024-06-27 18:02:15,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:02:15,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:02:15,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 390 transitions. [2024-06-27 18:02:15,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-06-27 18:02:15,876 INFO L175 Difference]: Start difference. First operand has 83 places, 73 transitions, 198 flow. Second operand 8 states and 390 transitions. [2024-06-27 18:02:15,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 234 transitions, 1075 flow [2024-06-27 18:02:16,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 234 transitions, 1075 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 18:02:16,175 INFO L231 Difference]: Finished difference. Result has 94 places, 86 transitions, 297 flow [2024-06-27 18:02:16,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=297, PETRI_PLACES=94, PETRI_TRANSITIONS=86} [2024-06-27 18:02:16,175 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 17 predicate places. [2024-06-27 18:02:16,176 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 86 transitions, 297 flow [2024-06-27 18:02:16,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 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) [2024-06-27 18:02:16,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:16,176 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] [2024-06-27 18:02:16,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:02:16,176 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-06-27 18:02:16,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:16,177 INFO L85 PathProgramCache]: Analyzing trace with hash -915917532, now seen corresponding path program 1 times [2024-06-27 18:02:16,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:16,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825443090] [2024-06-27 18:02:16,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:16,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:16,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:16,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:02:16,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:16,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825443090] [2024-06-27 18:02:16,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825443090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:16,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:16,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:02:16,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167952359] [2024-06-27 18:02:16,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:16,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:02:16,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:16,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:02:16,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:02:16,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 75 [2024-06-27 18:02:16,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 86 transitions, 297 flow. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 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) [2024-06-27 18:02:16,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:16,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 75 [2024-06-27 18:02:16,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:23,482 INFO L124 PetriNetUnfolderBase]: 60311/97944 cut-off events. [2024-06-27 18:02:23,483 INFO L125 PetriNetUnfolderBase]: For 39500/39955 co-relation queries the response was YES. [2024-06-27 18:02:24,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226722 conditions, 97944 events. 60311/97944 cut-off events. For 39500/39955 co-relation queries the response was YES. Maximal size of possible extension queue 2877. Compared 874449 event pairs, 20922 based on Foata normal form. 0/96592 useless extension candidates. Maximal degree in co-relation 226701. Up to 41911 conditions per place. [2024-06-27 18:02:24,400 INFO L140 encePairwiseOnDemand]: 68/75 looper letters, 219 selfloop transitions, 17 changer transitions 3/263 dead transitions. [2024-06-27 18:02:24,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 263 transitions, 1383 flow [2024-06-27 18:02:24,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:02:24,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:02:24,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 407 transitions. [2024-06-27 18:02:24,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6783333333333333 [2024-06-27 18:02:24,403 INFO L175 Difference]: Start difference. First operand has 94 places, 86 transitions, 297 flow. Second operand 8 states and 407 transitions. [2024-06-27 18:02:24,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 263 transitions, 1383 flow [2024-06-27 18:02:27,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 263 transitions, 1383 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 18:02:27,932 INFO L231 Difference]: Finished difference. Result has 105 places, 98 transitions, 406 flow [2024-06-27 18:02:27,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=406, PETRI_PLACES=105, PETRI_TRANSITIONS=98} [2024-06-27 18:02:27,938 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 28 predicate places. [2024-06-27 18:02:27,938 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 98 transitions, 406 flow [2024-06-27 18:02:27,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 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) [2024-06-27 18:02:27,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:27,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:27,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:02:27,940 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-06-27 18:02:27,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:27,941 INFO L85 PathProgramCache]: Analyzing trace with hash -2073527240, now seen corresponding path program 1 times [2024-06-27 18:02:27,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:27,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328675436] [2024-06-27 18:02:27,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:27,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:27,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:28,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:02:28,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:28,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328675436] [2024-06-27 18:02:28,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328675436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:28,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:28,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:02:28,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663786337] [2024-06-27 18:02:28,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:28,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:02:28,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:28,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:02:28,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:02:28,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 75 [2024-06-27 18:02:28,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 98 transitions, 406 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2024-06-27 18:02:28,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:28,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 75 [2024-06-27 18:02:28,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:34,859 INFO L124 PetriNetUnfolderBase]: 39065/67446 cut-off events. [2024-06-27 18:02:34,859 INFO L125 PetriNetUnfolderBase]: For 43880/45072 co-relation queries the response was YES. [2024-06-27 18:02:35,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170792 conditions, 67446 events. 39065/67446 cut-off events. For 43880/45072 co-relation queries the response was YES. Maximal size of possible extension queue 2424. Compared 638102 event pairs, 14121 based on Foata normal form. 3051/70354 useless extension candidates. Maximal degree in co-relation 170765. Up to 34690 conditions per place. [2024-06-27 18:02:35,461 INFO L140 encePairwiseOnDemand]: 62/75 looper letters, 122 selfloop transitions, 13 changer transitions 0/162 dead transitions. [2024-06-27 18:02:35,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 162 transitions, 963 flow [2024-06-27 18:02:35,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:02:35,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:02:35,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2024-06-27 18:02:35,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7511111111111111 [2024-06-27 18:02:35,463 INFO L175 Difference]: Start difference. First operand has 105 places, 98 transitions, 406 flow. Second operand 3 states and 169 transitions. [2024-06-27 18:02:35,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 162 transitions, 963 flow [2024-06-27 18:02:37,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 162 transitions, 963 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 18:02:37,393 INFO L231 Difference]: Finished difference. Result has 108 places, 106 transitions, 477 flow [2024-06-27 18:02:37,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=477, PETRI_PLACES=108, PETRI_TRANSITIONS=106} [2024-06-27 18:02:37,396 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 31 predicate places. [2024-06-27 18:02:37,396 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 106 transitions, 477 flow [2024-06-27 18:02:37,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2024-06-27 18:02:37,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:37,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:37,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:02:37,397 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-06-27 18:02:37,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:37,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1746161652, now seen corresponding path program 1 times [2024-06-27 18:02:37,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:37,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939126036] [2024-06-27 18:02:37,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:37,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:37,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:02:37,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:37,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939126036] [2024-06-27 18:02:37,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939126036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:37,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:37,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:02:37,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460119736] [2024-06-27 18:02:37,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:37,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:02:37,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:37,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:02:37,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:02:37,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 75 [2024-06-27 18:02:37,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 106 transitions, 477 flow. Second operand has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 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) [2024-06-27 18:02:37,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:37,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 75 [2024-06-27 18:02:37,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:43,788 INFO L124 PetriNetUnfolderBase]: 46584/75204 cut-off events. [2024-06-27 18:02:43,789 INFO L125 PetriNetUnfolderBase]: For 68662/70361 co-relation queries the response was YES. [2024-06-27 18:02:44,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222522 conditions, 75204 events. 46584/75204 cut-off events. For 68662/70361 co-relation queries the response was YES. Maximal size of possible extension queue 2542. Compared 658731 event pairs, 8512 based on Foata normal form. 895/76023 useless extension candidates. Maximal degree in co-relation 222493. Up to 22986 conditions per place. [2024-06-27 18:02:44,392 INFO L140 encePairwiseOnDemand]: 69/75 looper letters, 210 selfloop transitions, 27 changer transitions 27/287 dead transitions. [2024-06-27 18:02:44,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 287 transitions, 1812 flow [2024-06-27 18:02:44,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:02:44,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:02:44,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 398 transitions. [2024-06-27 18:02:44,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6633333333333333 [2024-06-27 18:02:44,394 INFO L175 Difference]: Start difference. First operand has 108 places, 106 transitions, 477 flow. Second operand 8 states and 398 transitions. [2024-06-27 18:02:44,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 287 transitions, 1812 flow [2024-06-27 18:02:46,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 287 transitions, 1749 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:02:46,550 INFO L231 Difference]: Finished difference. Result has 110 places, 111 transitions, 567 flow [2024-06-27 18:02:46,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=567, PETRI_PLACES=110, PETRI_TRANSITIONS=111} [2024-06-27 18:02:46,551 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 33 predicate places. [2024-06-27 18:02:46,552 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 111 transitions, 567 flow [2024-06-27 18:02:46,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 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) [2024-06-27 18:02:46,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:46,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:46,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:02:46,553 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-06-27 18:02:46,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:46,554 INFO L85 PathProgramCache]: Analyzing trace with hash 345164187, now seen corresponding path program 1 times [2024-06-27 18:02:46,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:46,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225618110] [2024-06-27 18:02:46,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:46,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:46,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:46,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:02:46,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:46,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225618110] [2024-06-27 18:02:46,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225618110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:46,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:46,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:02:46,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635016871] [2024-06-27 18:02:46,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:46,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:02:46,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:46,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:02:46,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:02:46,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 75 [2024-06-27 18:02:46,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 111 transitions, 567 flow. Second operand has 7 states, 7 states have (on average 30.857142857142858) internal successors, (216), 7 states have internal predecessors, (216), 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) [2024-06-27 18:02:46,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:46,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 75 [2024-06-27 18:02:46,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:02:49,598 INFO L124 PetriNetUnfolderBase]: 17776/31964 cut-off events. [2024-06-27 18:02:49,598 INFO L125 PetriNetUnfolderBase]: For 29632/30143 co-relation queries the response was YES. [2024-06-27 18:02:49,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89904 conditions, 31964 events. 17776/31964 cut-off events. For 29632/30143 co-relation queries the response was YES. Maximal size of possible extension queue 845. Compared 277783 event pairs, 5388 based on Foata normal form. 1299/33196 useless extension candidates. Maximal degree in co-relation 89875. Up to 16129 conditions per place. [2024-06-27 18:02:49,836 INFO L140 encePairwiseOnDemand]: 67/75 looper letters, 114 selfloop transitions, 11 changer transitions 1/150 dead transitions. [2024-06-27 18:02:49,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 150 transitions, 988 flow [2024-06-27 18:02:49,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:02:49,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:02:49,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 209 transitions. [2024-06-27 18:02:49,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5573333333333333 [2024-06-27 18:02:49,838 INFO L175 Difference]: Start difference. First operand has 110 places, 111 transitions, 567 flow. Second operand 5 states and 209 transitions. [2024-06-27 18:02:49,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 150 transitions, 988 flow [2024-06-27 18:02:50,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 150 transitions, 985 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-27 18:02:50,218 INFO L231 Difference]: Finished difference. Result has 113 places, 111 transitions, 586 flow [2024-06-27 18:02:50,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=586, PETRI_PLACES=113, PETRI_TRANSITIONS=111} [2024-06-27 18:02:50,220 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 36 predicate places. [2024-06-27 18:02:50,220 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 111 transitions, 586 flow [2024-06-27 18:02:50,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.857142857142858) internal successors, (216), 7 states have internal predecessors, (216), 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) [2024-06-27 18:02:50,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:02:50,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:02:50,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:02:50,221 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-06-27 18:02:50,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:02:50,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1217404256, now seen corresponding path program 1 times [2024-06-27 18:02:50,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:02:50,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247708122] [2024-06-27 18:02:50,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:02:50,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:02:50,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:02:50,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:02:50,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:02:50,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247708122] [2024-06-27 18:02:50,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247708122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:02:50,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:02:50,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:02:50,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381551011] [2024-06-27 18:02:50,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:02:50,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:02:50,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:02:50,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:02:50,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:02:50,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 75 [2024-06-27 18:02:50,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 111 transitions, 586 flow. Second operand has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:02:50,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:02:50,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 75 [2024-06-27 18:02:50,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand