./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe005_tso.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/pthread-wmm/safe005_tso.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe005_tso.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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 02:22:34,569 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 02:22:34,649 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 02:22:34,652 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 02:22:34,652 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 02:22:34,677 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 02:22:34,678 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 02:22:34,678 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 02:22:34,679 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 02:22:34,679 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 02:22:34,679 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 02:22:34,680 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 02:22:34,680 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 02:22:34,680 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 02:22:34,681 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 02:22:34,681 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 02:22:34,681 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 02:22:34,682 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 02:22:34,682 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 02:22:34,682 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 02:22:34,682 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 02:22:34,683 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 02:22:34,683 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 02:22:34,683 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 02:22:34,684 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 02:22:34,684 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 02:22:34,684 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 02:22:34,685 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 02:22:34,685 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 02:22:34,685 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 02:22:34,685 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 02:22:34,686 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 02:22:34,686 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:22:34,686 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 02:22:34,686 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 02:22:34,687 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 02:22:34,687 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 02:22:34,687 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 02:22:34,687 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 02:22:34,688 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 02:22:34,688 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 02:22:34,688 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 02:22:34,688 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 02:22:34,688 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 02:22:34,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 02:22:34,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 02:22:34,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 02:22:34,864 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 02:22:34,864 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 02:22:34,865 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe005_tso.yml/witness.yml [2024-06-28 02:22:35,005 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 02:22:35,005 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 02:22:35,005 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.i [2024-06-28 02:22:36,125 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 02:22:36,363 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 02:22:36,365 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.i [2024-06-28 02:22:36,380 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9030c912c/9c67e6cf4f5549358e9db557d2307b47/FLAG7cd6e1045 [2024-06-28 02:22:36,395 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9030c912c/9c67e6cf4f5549358e9db557d2307b47 [2024-06-28 02:22:36,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 02:22:36,397 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 02:22:36,399 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 02:22:36,400 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 02:22:36,403 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 02:22:36,404 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:22:35" (1/2) ... [2024-06-28 02:22:36,405 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45cc8169 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:22:36, skipping insertion in model container [2024-06-28 02:22:36,405 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:22:35" (1/2) ... [2024-06-28 02:22:36,406 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@ccc158d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:22:36, skipping insertion in model container [2024-06-28 02:22:36,406 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:22:36" (2/2) ... [2024-06-28 02:22:36,407 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45cc8169 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:36, skipping insertion in model container [2024-06-28 02:22:36,407 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:22:36" (2/2) ... [2024-06-28 02:22:36,407 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 02:22:36,445 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 02:22:36,460 INFO L97 edCorrectnessWitness]: Location invariant before [L786-L786] ((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (((((0 <= __unbuffered_cnt && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (x == 0 || x == 1)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || (x == 0 || x == 1)) [2024-06-28 02:22:36,460 INFO L97 edCorrectnessWitness]: Location invariant before [L785-L785] ((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (((((0 <= __unbuffered_cnt && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (x == 0 || x == 1)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || (x == 0 || x == 1)) [2024-06-28 02:22:36,460 INFO L97 edCorrectnessWitness]: Location invariant before [L783-L783] ((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (((((0 <= __unbuffered_cnt && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (x == 0 || x == 1)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || (x == 0 || x == 1)) [2024-06-28 02:22:36,460 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 02:22:36,460 INFO L106 edCorrectnessWitness]: ghost_update [L781-L781] multithreaded = 1; [2024-06-28 02:22:36,494 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 02:22:36,755 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:22:36,765 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 02:22:36,864 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:22:36,892 INFO L206 MainTranslator]: Completed translation [2024-06-28 02:22:36,892 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:36 WrapperNode [2024-06-28 02:22:36,893 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 02:22:36,894 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 02:22:36,894 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 02:22:36,894 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 02:22:36,899 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:36" (1/1) ... [2024-06-28 02:22:36,919 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:36" (1/1) ... [2024-06-28 02:22:36,937 INFO L138 Inliner]: procedures = 175, calls = 44, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 66 [2024-06-28 02:22:36,938 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 02:22:36,938 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 02:22:36,939 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 02:22:36,939 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 02:22:36,947 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:36" (1/1) ... [2024-06-28 02:22:36,947 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:36" (1/1) ... [2024-06-28 02:22:36,949 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:36" (1/1) ... [2024-06-28 02:22:36,968 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 02:22:36,968 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:36" (1/1) ... [2024-06-28 02:22:36,969 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:36" (1/1) ... [2024-06-28 02:22:36,975 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:36" (1/1) ... [2024-06-28 02:22:36,976 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:36" (1/1) ... [2024-06-28 02:22:36,977 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:36" (1/1) ... [2024-06-28 02:22:36,978 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:36" (1/1) ... [2024-06-28 02:22:36,981 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 02:22:36,982 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 02:22:36,982 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 02:22:36,982 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 02:22:36,983 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:36" (1/1) ... [2024-06-28 02:22:36,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:22:36,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 02:22:37,007 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) [2024-06-28 02:22:37,010 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 [2024-06-28 02:22:37,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 02:22:37,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 02:22:37,039 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 02:22:37,039 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 02:22:37,039 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 02:22:37,039 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 02:22:37,039 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 02:22:37,039 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 02:22:37,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 02:22:37,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 02:22:37,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 02:22:37,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 02:22:37,041 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 02:22:37,142 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 02:22:37,145 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 02:22:37,343 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 02:22:37,344 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 02:22:37,422 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 02:22:37,422 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 02:22:37,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:22:37 BoogieIcfgContainer [2024-06-28 02:22:37,422 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 02:22:37,424 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 02:22:37,424 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 02:22:37,430 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 02:22:37,431 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:22:35" (1/4) ... [2024-06-28 02:22:37,432 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46992d3f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:22:37, skipping insertion in model container [2024-06-28 02:22:37,432 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 02:22:36" (2/4) ... [2024-06-28 02:22:37,433 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46992d3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:22:37, skipping insertion in model container [2024-06-28 02:22:37,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:22:36" (3/4) ... [2024-06-28 02:22:37,433 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46992d3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:22:37, skipping insertion in model container [2024-06-28 02:22:37,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:22:37" (4/4) ... [2024-06-28 02:22:37,434 INFO L112 eAbstractionObserver]: Analyzing ICFG safe005_tso.i [2024-06-28 02:22:37,451 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 02:22:37,451 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 02:22:37,451 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 02:22:37,492 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 02:22:37,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 41 transitions, 94 flow [2024-06-28 02:22:37,544 INFO L124 PetriNetUnfolderBase]: 0/38 cut-off events. [2024-06-28 02:22:37,544 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:22:37,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 38 events. 0/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 66 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 02:22:37,546 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 41 transitions, 94 flow [2024-06-28 02:22:37,549 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2024-06-28 02:22:37,565 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 02:22:37,571 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;@4944bff4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 02:22:37,572 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 02:22:37,576 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 02:22:37,576 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 02:22:37,576 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:22:37,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:37,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 02:22:37,577 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:37,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:37,582 INFO L85 PathProgramCache]: Analyzing trace with hash 219069644, now seen corresponding path program 1 times [2024-06-28 02:22:37,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:37,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600072911] [2024-06-28 02:22:37,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:37,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:37,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:37,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:37,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600072911] [2024-06-28 02:22:37,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600072911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:37,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:37,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:22:37,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157645185] [2024-06-28 02:22:37,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:37,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:22:37,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:37,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:22:37,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:22:37,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-06-28 02:22:37,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-06-28 02:22:37,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:37,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-06-28 02:22:37,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:38,155 INFO L124 PetriNetUnfolderBase]: 470/794 cut-off events. [2024-06-28 02:22:38,156 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-06-28 02:22:38,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1593 conditions, 794 events. 470/794 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3834 event pairs, 281 based on Foata normal form. 1/747 useless extension candidates. Maximal degree in co-relation 1581. Up to 736 conditions per place. [2024-06-28 02:22:38,167 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 27 selfloop transitions, 4 changer transitions 0/42 dead transitions. [2024-06-28 02:22:38,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 42 transitions, 161 flow [2024-06-28 02:22:38,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:22:38,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:22:38,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2024-06-28 02:22:38,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7154471544715447 [2024-06-28 02:22:38,181 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 3 states and 88 transitions. [2024-06-28 02:22:38,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 42 transitions, 161 flow [2024-06-28 02:22:38,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 42 transitions, 156 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 02:22:38,187 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 100 flow [2024-06-28 02:22:38,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2024-06-28 02:22:38,193 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2024-06-28 02:22:38,193 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 100 flow [2024-06-28 02:22:38,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-06-28 02:22:38,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:38,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:38,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 02:22:38,194 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:38,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:38,195 INFO L85 PathProgramCache]: Analyzing trace with hash 73227933, now seen corresponding path program 1 times [2024-06-28 02:22:38,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:38,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751565361] [2024-06-28 02:22:38,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:38,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:38,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:38,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:38,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751565361] [2024-06-28 02:22:38,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751565361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:38,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:38,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:22:38,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805338083] [2024-06-28 02:22:38,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:38,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:22:38,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:38,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:22:38,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:22:38,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-06-28 02:22:38,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2024-06-28 02:22:38,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:38,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-06-28 02:22:38,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:38,497 INFO L124 PetriNetUnfolderBase]: 724/1188 cut-off events. [2024-06-28 02:22:38,498 INFO L125 PetriNetUnfolderBase]: For 255/289 co-relation queries the response was YES. [2024-06-28 02:22:38,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2718 conditions, 1188 events. 724/1188 cut-off events. For 255/289 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6052 event pairs, 401 based on Foata normal form. 3/1156 useless extension candidates. Maximal degree in co-relation 2706. Up to 1090 conditions per place. [2024-06-28 02:22:38,505 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 39 selfloop transitions, 7 changer transitions 0/55 dead transitions. [2024-06-28 02:22:38,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 55 transitions, 248 flow [2024-06-28 02:22:38,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:22:38,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:22:38,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2024-06-28 02:22:38,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6707317073170732 [2024-06-28 02:22:38,507 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 100 flow. Second operand 4 states and 110 transitions. [2024-06-28 02:22:38,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 55 transitions, 248 flow [2024-06-28 02:22:38,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 55 transitions, 242 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:22:38,509 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 152 flow [2024-06-28 02:22:38,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-06-28 02:22:38,510 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2024-06-28 02:22:38,510 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 152 flow [2024-06-28 02:22:38,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2024-06-28 02:22:38,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:38,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:38,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 02:22:38,511 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:38,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:38,512 INFO L85 PathProgramCache]: Analyzing trace with hash 627187612, now seen corresponding path program 1 times [2024-06-28 02:22:38,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:38,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495023580] [2024-06-28 02:22:38,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:38,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:38,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:38,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:38,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:38,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495023580] [2024-06-28 02:22:38,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495023580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:38,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:38,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:22:38,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75446474] [2024-06-28 02:22:38,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:38,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:22:38,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:38,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:22:38,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:22:38,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 02:22:38,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2024-06-28 02:22:38,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:38,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 02:22:38,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:38,831 INFO L124 PetriNetUnfolderBase]: 632/1065 cut-off events. [2024-06-28 02:22:38,831 INFO L125 PetriNetUnfolderBase]: For 588/681 co-relation queries the response was YES. [2024-06-28 02:22:38,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2737 conditions, 1065 events. 632/1065 cut-off events. For 588/681 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5424 event pairs, 334 based on Foata normal form. 2/1024 useless extension candidates. Maximal degree in co-relation 2722. Up to 968 conditions per place. [2024-06-28 02:22:38,837 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 34 selfloop transitions, 9 changer transitions 0/55 dead transitions. [2024-06-28 02:22:38,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 55 transitions, 276 flow [2024-06-28 02:22:38,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:22:38,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:22:38,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-06-28 02:22:38,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6646341463414634 [2024-06-28 02:22:38,839 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 152 flow. Second operand 4 states and 109 transitions. [2024-06-28 02:22:38,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 55 transitions, 276 flow [2024-06-28 02:22:38,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 55 transitions, 274 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-28 02:22:38,841 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 193 flow [2024-06-28 02:22:38,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=193, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2024-06-28 02:22:38,842 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2024-06-28 02:22:38,842 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 193 flow [2024-06-28 02:22:38,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2024-06-28 02:22:38,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:38,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:38,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 02:22:38,843 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:38,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:38,843 INFO L85 PathProgramCache]: Analyzing trace with hash 816716713, now seen corresponding path program 1 times [2024-06-28 02:22:38,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:38,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775548256] [2024-06-28 02:22:38,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:38,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:38,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:38,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:38,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:38,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775548256] [2024-06-28 02:22:38,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775548256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:38,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:38,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:38,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634431303] [2024-06-28 02:22:38,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:38,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:38,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:38,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:38,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:39,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:22:39,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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) [2024-06-28 02:22:39,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:39,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:22:39,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:39,182 INFO L124 PetriNetUnfolderBase]: 908/1468 cut-off events. [2024-06-28 02:22:39,183 INFO L125 PetriNetUnfolderBase]: For 1410/1410 co-relation queries the response was YES. [2024-06-28 02:22:39,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4142 conditions, 1468 events. 908/1468 cut-off events. For 1410/1410 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7260 event pairs, 290 based on Foata normal form. 6/1462 useless extension candidates. Maximal degree in co-relation 4124. Up to 1315 conditions per place. [2024-06-28 02:22:39,190 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 54 selfloop transitions, 12 changer transitions 0/74 dead transitions. [2024-06-28 02:22:39,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 74 transitions, 407 flow [2024-06-28 02:22:39,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:39,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:39,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-28 02:22:39,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6219512195121951 [2024-06-28 02:22:39,194 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 193 flow. Second operand 6 states and 153 transitions. [2024-06-28 02:22:39,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 74 transitions, 407 flow [2024-06-28 02:22:39,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 74 transitions, 390 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:39,198 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 233 flow [2024-06-28 02:22:39,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=233, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-06-28 02:22:39,199 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2024-06-28 02:22:39,200 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 233 flow [2024-06-28 02:22:39,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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) [2024-06-28 02:22:39,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:39,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:39,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 02:22:39,200 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:39,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:39,201 INFO L85 PathProgramCache]: Analyzing trace with hash -2032019753, now seen corresponding path program 1 times [2024-06-28 02:22:39,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:39,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953336140] [2024-06-28 02:22:39,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:39,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:39,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:39,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:39,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:39,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953336140] [2024-06-28 02:22:39,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953336140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:39,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:39,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:22:39,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018688429] [2024-06-28 02:22:39,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:39,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:39,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:39,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:39,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:39,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:22:39,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 233 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 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) [2024-06-28 02:22:39,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:39,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:22:39,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:39,508 INFO L124 PetriNetUnfolderBase]: 917/1512 cut-off events. [2024-06-28 02:22:39,509 INFO L125 PetriNetUnfolderBase]: For 2176/2176 co-relation queries the response was YES. [2024-06-28 02:22:39,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4581 conditions, 1512 events. 917/1512 cut-off events. For 2176/2176 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7655 event pairs, 320 based on Foata normal form. 4/1511 useless extension candidates. Maximal degree in co-relation 4561. Up to 1318 conditions per place. [2024-06-28 02:22:39,518 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 52 selfloop transitions, 15 changer transitions 0/75 dead transitions. [2024-06-28 02:22:39,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 75 transitions, 467 flow [2024-06-28 02:22:39,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:39,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:39,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-06-28 02:22:39,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6341463414634146 [2024-06-28 02:22:39,520 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 233 flow. Second operand 5 states and 130 transitions. [2024-06-28 02:22:39,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 75 transitions, 467 flow [2024-06-28 02:22:39,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 75 transitions, 442 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 02:22:39,526 INFO L231 Difference]: Finished difference. Result has 57 places, 57 transitions, 306 flow [2024-06-28 02:22:39,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=306, PETRI_PLACES=57, PETRI_TRANSITIONS=57} [2024-06-28 02:22:39,529 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 15 predicate places. [2024-06-28 02:22:39,529 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 57 transitions, 306 flow [2024-06-28 02:22:39,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 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) [2024-06-28 02:22:39,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:39,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:39,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 02:22:39,533 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:39,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:39,534 INFO L85 PathProgramCache]: Analyzing trace with hash 2000396091, now seen corresponding path program 1 times [2024-06-28 02:22:39,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:39,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333168566] [2024-06-28 02:22:39,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:39,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:39,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:39,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:39,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:39,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333168566] [2024-06-28 02:22:39,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333168566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:39,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:39,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:22:39,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490475795] [2024-06-28 02:22:39,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:39,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:39,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:39,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:39,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:39,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:22:39,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 306 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 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) [2024-06-28 02:22:39,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:39,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:22:39,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:39,842 INFO L124 PetriNetUnfolderBase]: 928/1533 cut-off events. [2024-06-28 02:22:39,842 INFO L125 PetriNetUnfolderBase]: For 3308/3311 co-relation queries the response was YES. [2024-06-28 02:22:39,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5231 conditions, 1533 events. 928/1533 cut-off events. For 3308/3311 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7767 event pairs, 341 based on Foata normal form. 2/1529 useless extension candidates. Maximal degree in co-relation 5209. Up to 1325 conditions per place. [2024-06-28 02:22:39,851 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 55 selfloop transitions, 19 changer transitions 0/82 dead transitions. [2024-06-28 02:22:39,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 82 transitions, 561 flow [2024-06-28 02:22:39,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:39,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:39,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-06-28 02:22:39,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6536585365853659 [2024-06-28 02:22:39,852 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 306 flow. Second operand 5 states and 134 transitions. [2024-06-28 02:22:39,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 82 transitions, 561 flow [2024-06-28 02:22:39,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 82 transitions, 529 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:39,857 INFO L231 Difference]: Finished difference. Result has 61 places, 62 transitions, 370 flow [2024-06-28 02:22:39,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=370, PETRI_PLACES=61, PETRI_TRANSITIONS=62} [2024-06-28 02:22:39,858 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 19 predicate places. [2024-06-28 02:22:39,858 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 62 transitions, 370 flow [2024-06-28 02:22:39,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 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) [2024-06-28 02:22:39,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:39,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:39,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 02:22:39,859 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:39,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:39,859 INFO L85 PathProgramCache]: Analyzing trace with hash 2119657435, now seen corresponding path program 2 times [2024-06-28 02:22:39,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:39,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178350218] [2024-06-28 02:22:39,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:39,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:39,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:39,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:39,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:39,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178350218] [2024-06-28 02:22:39,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178350218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:39,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:39,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:22:39,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093628271] [2024-06-28 02:22:39,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:39,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:39,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:39,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:39,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:39,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:22:39,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 62 transitions, 370 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 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) [2024-06-28 02:22:39,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:39,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:22:39,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:40,118 INFO L124 PetriNetUnfolderBase]: 915/1510 cut-off events. [2024-06-28 02:22:40,119 INFO L125 PetriNetUnfolderBase]: For 3810/3810 co-relation queries the response was YES. [2024-06-28 02:22:40,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5269 conditions, 1510 events. 915/1510 cut-off events. For 3810/3810 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7612 event pairs, 336 based on Foata normal form. 4/1509 useless extension candidates. Maximal degree in co-relation 5245. Up to 1312 conditions per place. [2024-06-28 02:22:40,128 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 51 selfloop transitions, 18 changer transitions 0/77 dead transitions. [2024-06-28 02:22:40,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 77 transitions, 546 flow [2024-06-28 02:22:40,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:40,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:40,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-06-28 02:22:40,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.624390243902439 [2024-06-28 02:22:40,130 INFO L175 Difference]: Start difference. First operand has 61 places, 62 transitions, 370 flow. Second operand 5 states and 128 transitions. [2024-06-28 02:22:40,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 77 transitions, 546 flow [2024-06-28 02:22:40,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 77 transitions, 523 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-06-28 02:22:40,135 INFO L231 Difference]: Finished difference. Result has 65 places, 62 transitions, 393 flow [2024-06-28 02:22:40,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=393, PETRI_PLACES=65, PETRI_TRANSITIONS=62} [2024-06-28 02:22:40,136 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2024-06-28 02:22:40,136 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 62 transitions, 393 flow [2024-06-28 02:22:40,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 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) [2024-06-28 02:22:40,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:40,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:40,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 02:22:40,137 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:40,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:40,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1439162230, now seen corresponding path program 1 times [2024-06-28 02:22:40,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:40,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628418142] [2024-06-28 02:22:40,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:40,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:40,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:40,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:40,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:40,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628418142] [2024-06-28 02:22:40,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628418142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:40,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:40,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:40,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222188348] [2024-06-28 02:22:40,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:40,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:40,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:40,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:40,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:40,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:22:40,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 62 transitions, 393 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 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) [2024-06-28 02:22:40,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:40,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:22:40,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:40,428 INFO L124 PetriNetUnfolderBase]: 924/1521 cut-off events. [2024-06-28 02:22:40,428 INFO L125 PetriNetUnfolderBase]: For 4814/4814 co-relation queries the response was YES. [2024-06-28 02:22:40,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5436 conditions, 1521 events. 924/1521 cut-off events. For 4814/4814 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7614 event pairs, 306 based on Foata normal form. 8/1524 useless extension candidates. Maximal degree in co-relation 5410. Up to 1291 conditions per place. [2024-06-28 02:22:40,438 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 55 selfloop transitions, 22 changer transitions 0/85 dead transitions. [2024-06-28 02:22:40,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 85 transitions, 617 flow [2024-06-28 02:22:40,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:40,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:40,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-06-28 02:22:40,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6138211382113821 [2024-06-28 02:22:40,456 INFO L175 Difference]: Start difference. First operand has 65 places, 62 transitions, 393 flow. Second operand 6 states and 151 transitions. [2024-06-28 02:22:40,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 85 transitions, 617 flow [2024-06-28 02:22:40,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 85 transitions, 588 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 02:22:40,462 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 442 flow [2024-06-28 02:22:40,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=442, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2024-06-28 02:22:40,463 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2024-06-28 02:22:40,463 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 442 flow [2024-06-28 02:22:40,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 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) [2024-06-28 02:22:40,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:40,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:40,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 02:22:40,464 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:40,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:40,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1769449510, now seen corresponding path program 1 times [2024-06-28 02:22:40,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:40,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585377411] [2024-06-28 02:22:40,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:40,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:40,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:40,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:40,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:40,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585377411] [2024-06-28 02:22:40,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585377411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:40,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:40,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:40,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122514746] [2024-06-28 02:22:40,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:40,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:40,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:40,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:40,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:40,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:22:40,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 442 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 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) [2024-06-28 02:22:40,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:40,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:22:40,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:40,759 INFO L124 PetriNetUnfolderBase]: 935/1546 cut-off events. [2024-06-28 02:22:40,759 INFO L125 PetriNetUnfolderBase]: For 5859/5859 co-relation queries the response was YES. [2024-06-28 02:22:40,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5859 conditions, 1546 events. 935/1546 cut-off events. For 5859/5859 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7788 event pairs, 308 based on Foata normal form. 2/1546 useless extension candidates. Maximal degree in co-relation 5832. Up to 1378 conditions per place. [2024-06-28 02:22:40,769 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 72 selfloop transitions, 13 changer transitions 0/93 dead transitions. [2024-06-28 02:22:40,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 93 transitions, 696 flow [2024-06-28 02:22:40,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:40,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:40,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-28 02:22:40,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6178861788617886 [2024-06-28 02:22:40,771 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 442 flow. Second operand 6 states and 152 transitions. [2024-06-28 02:22:40,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 93 transitions, 696 flow [2024-06-28 02:22:40,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 93 transitions, 642 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 02:22:40,779 INFO L231 Difference]: Finished difference. Result has 70 places, 68 transitions, 448 flow [2024-06-28 02:22:40,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=448, PETRI_PLACES=70, PETRI_TRANSITIONS=68} [2024-06-28 02:22:40,780 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 28 predicate places. [2024-06-28 02:22:40,780 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 68 transitions, 448 flow [2024-06-28 02:22:40,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 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) [2024-06-28 02:22:40,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:40,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:40,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 02:22:40,781 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:40,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:40,781 INFO L85 PathProgramCache]: Analyzing trace with hash -455521062, now seen corresponding path program 2 times [2024-06-28 02:22:40,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:40,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932100613] [2024-06-28 02:22:40,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:40,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:40,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:40,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:40,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:40,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932100613] [2024-06-28 02:22:40,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932100613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:40,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:40,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:40,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118717788] [2024-06-28 02:22:40,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:40,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:40,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:40,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:40,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:40,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:22:40,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 68 transitions, 448 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 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) [2024-06-28 02:22:40,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:40,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:22:40,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:41,063 INFO L124 PetriNetUnfolderBase]: 962/1588 cut-off events. [2024-06-28 02:22:41,064 INFO L125 PetriNetUnfolderBase]: For 7275/7278 co-relation queries the response was YES. [2024-06-28 02:22:41,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6261 conditions, 1588 events. 962/1588 cut-off events. For 7275/7278 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 8027 event pairs, 308 based on Foata normal form. 2/1582 useless extension candidates. Maximal degree in co-relation 6233. Up to 1299 conditions per place. [2024-06-28 02:22:41,075 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 64 selfloop transitions, 32 changer transitions 0/104 dead transitions. [2024-06-28 02:22:41,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 104 transitions, 854 flow [2024-06-28 02:22:41,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:41,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:41,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2024-06-28 02:22:41,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6544715447154471 [2024-06-28 02:22:41,077 INFO L175 Difference]: Start difference. First operand has 70 places, 68 transitions, 448 flow. Second operand 6 states and 161 transitions. [2024-06-28 02:22:41,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 104 transitions, 854 flow [2024-06-28 02:22:41,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 104 transitions, 818 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 02:22:41,086 INFO L231 Difference]: Finished difference. Result has 72 places, 78 transitions, 570 flow [2024-06-28 02:22:41,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=570, PETRI_PLACES=72, PETRI_TRANSITIONS=78} [2024-06-28 02:22:41,087 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 30 predicate places. [2024-06-28 02:22:41,087 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 78 transitions, 570 flow [2024-06-28 02:22:41,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 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) [2024-06-28 02:22:41,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:41,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:41,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 02:22:41,088 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:41,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:41,088 INFO L85 PathProgramCache]: Analyzing trace with hash 705318268, now seen corresponding path program 3 times [2024-06-28 02:22:41,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:41,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956212364] [2024-06-28 02:22:41,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:41,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:41,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:41,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:41,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956212364] [2024-06-28 02:22:41,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956212364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:41,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:41,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:41,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429929573] [2024-06-28 02:22:41,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:41,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:41,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:41,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:41,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:41,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:22:41,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 78 transitions, 570 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 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) [2024-06-28 02:22:41,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:41,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:22:41,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:41,387 INFO L124 PetriNetUnfolderBase]: 952/1570 cut-off events. [2024-06-28 02:22:41,387 INFO L125 PetriNetUnfolderBase]: For 9007/9007 co-relation queries the response was YES. [2024-06-28 02:22:41,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6628 conditions, 1570 events. 952/1570 cut-off events. For 9007/9007 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7951 event pairs, 306 based on Foata normal form. 4/1566 useless extension candidates. Maximal degree in co-relation 6599. Up to 1291 conditions per place. [2024-06-28 02:22:41,398 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 62 selfloop transitions, 29 changer transitions 0/99 dead transitions. [2024-06-28 02:22:41,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 99 transitions, 844 flow [2024-06-28 02:22:41,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:41,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:41,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-06-28 02:22:41,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6300813008130082 [2024-06-28 02:22:41,399 INFO L175 Difference]: Start difference. First operand has 72 places, 78 transitions, 570 flow. Second operand 6 states and 155 transitions. [2024-06-28 02:22:41,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 99 transitions, 844 flow [2024-06-28 02:22:41,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 99 transitions, 802 flow, removed 17 selfloop flow, removed 1 redundant places. [2024-06-28 02:22:41,413 INFO L231 Difference]: Finished difference. Result has 77 places, 78 transitions, 595 flow [2024-06-28 02:22:41,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=595, PETRI_PLACES=77, PETRI_TRANSITIONS=78} [2024-06-28 02:22:41,413 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 35 predicate places. [2024-06-28 02:22:41,413 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 78 transitions, 595 flow [2024-06-28 02:22:41,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 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) [2024-06-28 02:22:41,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:41,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:41,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 02:22:41,414 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:41,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:41,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1881521801, now seen corresponding path program 1 times [2024-06-28 02:22:41,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:41,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138668167] [2024-06-28 02:22:41,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:41,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:41,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:41,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:41,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138668167] [2024-06-28 02:22:41,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138668167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:41,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:41,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:41,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118563358] [2024-06-28 02:22:41,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:41,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:41,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:41,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:41,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:41,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:22:41,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 78 transitions, 595 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2024-06-28 02:22:41,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:41,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:22:41,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:41,775 INFO L124 PetriNetUnfolderBase]: 963/1591 cut-off events. [2024-06-28 02:22:41,776 INFO L125 PetriNetUnfolderBase]: For 10330/10330 co-relation queries the response was YES. [2024-06-28 02:22:41,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6888 conditions, 1591 events. 963/1591 cut-off events. For 10330/10330 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 8109 event pairs, 307 based on Foata normal form. 2/1585 useless extension candidates. Maximal degree in co-relation 6856. Up to 1351 conditions per place. [2024-06-28 02:22:41,789 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 61 selfloop transitions, 27 changer transitions 0/96 dead transitions. [2024-06-28 02:22:41,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 96 transitions, 843 flow [2024-06-28 02:22:41,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:41,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:41,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-06-28 02:22:41,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6390243902439025 [2024-06-28 02:22:41,791 INFO L175 Difference]: Start difference. First operand has 77 places, 78 transitions, 595 flow. Second operand 5 states and 131 transitions. [2024-06-28 02:22:41,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 96 transitions, 843 flow [2024-06-28 02:22:41,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 96 transitions, 768 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:41,808 INFO L231 Difference]: Finished difference. Result has 77 places, 81 transitions, 629 flow [2024-06-28 02:22:41,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=629, PETRI_PLACES=77, PETRI_TRANSITIONS=81} [2024-06-28 02:22:41,808 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 35 predicate places. [2024-06-28 02:22:41,809 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 81 transitions, 629 flow [2024-06-28 02:22:41,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2024-06-28 02:22:41,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:41,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:41,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 02:22:41,810 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:41,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:41,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1129250393, now seen corresponding path program 2 times [2024-06-28 02:22:41,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:41,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290912137] [2024-06-28 02:22:41,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:41,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:41,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:41,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:41,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:41,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290912137] [2024-06-28 02:22:41,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290912137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:41,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:41,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:41,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299868259] [2024-06-28 02:22:41,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:41,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:41,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:41,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:41,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:41,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:22:41,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 81 transitions, 629 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2024-06-28 02:22:41,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:41,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:22:41,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:42,108 INFO L124 PetriNetUnfolderBase]: 974/1612 cut-off events. [2024-06-28 02:22:42,108 INFO L125 PetriNetUnfolderBase]: For 11759/11759 co-relation queries the response was YES. [2024-06-28 02:22:42,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7076 conditions, 1612 events. 974/1612 cut-off events. For 11759/11759 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 8246 event pairs, 307 based on Foata normal form. 2/1606 useless extension candidates. Maximal degree in co-relation 7044. Up to 1315 conditions per place. [2024-06-28 02:22:42,118 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 62 selfloop transitions, 35 changer transitions 0/105 dead transitions. [2024-06-28 02:22:42,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 105 transitions, 958 flow [2024-06-28 02:22:42,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:42,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:42,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-06-28 02:22:42,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6260162601626016 [2024-06-28 02:22:42,120 INFO L175 Difference]: Start difference. First operand has 77 places, 81 transitions, 629 flow. Second operand 6 states and 154 transitions. [2024-06-28 02:22:42,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 105 transitions, 958 flow [2024-06-28 02:22:42,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 105 transitions, 905 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 02:22:42,135 INFO L231 Difference]: Finished difference. Result has 80 places, 84 transitions, 690 flow [2024-06-28 02:22:42,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=690, PETRI_PLACES=80, PETRI_TRANSITIONS=84} [2024-06-28 02:22:42,136 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 38 predicate places. [2024-06-28 02:22:42,136 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 84 transitions, 690 flow [2024-06-28 02:22:42,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2024-06-28 02:22:42,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:42,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:42,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 02:22:42,137 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:42,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:42,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1129457783, now seen corresponding path program 3 times [2024-06-28 02:22:42,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:42,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179217015] [2024-06-28 02:22:42,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:42,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:42,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:42,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:42,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179217015] [2024-06-28 02:22:42,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179217015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:42,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:42,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:42,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053650837] [2024-06-28 02:22:42,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:42,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:42,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:42,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:42,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:42,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:22:42,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 84 transitions, 690 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2024-06-28 02:22:42,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:42,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:22:42,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:42,501 INFO L124 PetriNetUnfolderBase]: 969/1605 cut-off events. [2024-06-28 02:22:42,501 INFO L125 PetriNetUnfolderBase]: For 13320/13320 co-relation queries the response was YES. [2024-06-28 02:22:42,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7190 conditions, 1605 events. 969/1605 cut-off events. For 13320/13320 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 8214 event pairs, 307 based on Foata normal form. 2/1599 useless extension candidates. Maximal degree in co-relation 7157. Up to 1310 conditions per place. [2024-06-28 02:22:42,511 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 57 selfloop transitions, 38 changer transitions 0/103 dead transitions. [2024-06-28 02:22:42,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 103 transitions, 928 flow [2024-06-28 02:22:42,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:42,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:42,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-28 02:22:42,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6219512195121951 [2024-06-28 02:22:42,512 INFO L175 Difference]: Start difference. First operand has 80 places, 84 transitions, 690 flow. Second operand 6 states and 153 transitions. [2024-06-28 02:22:42,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 103 transitions, 928 flow [2024-06-28 02:22:42,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 103 transitions, 836 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-28 02:22:42,531 INFO L231 Difference]: Finished difference. Result has 83 places, 84 transitions, 682 flow [2024-06-28 02:22:42,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=682, PETRI_PLACES=83, PETRI_TRANSITIONS=84} [2024-06-28 02:22:42,532 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 41 predicate places. [2024-06-28 02:22:42,532 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 84 transitions, 682 flow [2024-06-28 02:22:42,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2024-06-28 02:22:42,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:42,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:42,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 02:22:42,532 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:42,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:42,533 INFO L85 PathProgramCache]: Analyzing trace with hash 713496952, now seen corresponding path program 1 times [2024-06-28 02:22:42,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:42,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824233751] [2024-06-28 02:22:42,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:42,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:42,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:42,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:42,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824233751] [2024-06-28 02:22:42,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824233751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:42,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:42,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:22:42,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342595908] [2024-06-28 02:22:42,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:42,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:42,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:42,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:42,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:42,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-06-28 02:22:42,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 84 transitions, 682 flow. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 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) [2024-06-28 02:22:42,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:42,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-06-28 02:22:42,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:42,836 INFO L124 PetriNetUnfolderBase]: 911/1565 cut-off events. [2024-06-28 02:22:42,837 INFO L125 PetriNetUnfolderBase]: For 14592/14592 co-relation queries the response was YES. [2024-06-28 02:22:42,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7054 conditions, 1565 events. 911/1565 cut-off events. For 14592/14592 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 8195 event pairs, 293 based on Foata normal form. 2/1565 useless extension candidates. Maximal degree in co-relation 7020. Up to 1310 conditions per place. [2024-06-28 02:22:42,846 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 78 selfloop transitions, 17 changer transitions 0/109 dead transitions. [2024-06-28 02:22:42,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 109 transitions, 992 flow [2024-06-28 02:22:42,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:42,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:42,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-06-28 02:22:42,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6341463414634146 [2024-06-28 02:22:42,847 INFO L175 Difference]: Start difference. First operand has 83 places, 84 transitions, 682 flow. Second operand 5 states and 130 transitions. [2024-06-28 02:22:42,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 109 transitions, 992 flow [2024-06-28 02:22:42,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 109 transitions, 861 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 02:22:42,862 INFO L231 Difference]: Finished difference. Result has 82 places, 93 transitions, 660 flow [2024-06-28 02:22:42,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=660, PETRI_PLACES=82, PETRI_TRANSITIONS=93} [2024-06-28 02:22:42,865 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 40 predicate places. [2024-06-28 02:22:42,865 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 93 transitions, 660 flow [2024-06-28 02:22:42,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 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) [2024-06-28 02:22:42,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:42,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:42,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 02:22:42,865 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:42,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:42,865 INFO L85 PathProgramCache]: Analyzing trace with hash 55122551, now seen corresponding path program 1 times [2024-06-28 02:22:42,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:42,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308647015] [2024-06-28 02:22:42,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:42,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:42,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:42,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:42,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308647015] [2024-06-28 02:22:42,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308647015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:42,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:42,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:42,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619979384] [2024-06-28 02:22:42,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:42,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:42,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:42,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:42,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:43,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:22:43,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 93 transitions, 660 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2024-06-28 02:22:43,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:43,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:22:43,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:43,198 INFO L124 PetriNetUnfolderBase]: 996/1660 cut-off events. [2024-06-28 02:22:43,198 INFO L125 PetriNetUnfolderBase]: For 16311/16311 co-relation queries the response was YES. [2024-06-28 02:22:43,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7617 conditions, 1660 events. 996/1660 cut-off events. For 16311/16311 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8525 event pairs, 304 based on Foata normal form. 4/1659 useless extension candidates. Maximal degree in co-relation 7582. Up to 1416 conditions per place. [2024-06-28 02:22:43,209 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 87 selfloop transitions, 20 changer transitions 0/115 dead transitions. [2024-06-28 02:22:43,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 115 transitions, 942 flow [2024-06-28 02:22:43,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:43,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:43,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-28 02:22:43,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6097560975609756 [2024-06-28 02:22:43,210 INFO L175 Difference]: Start difference. First operand has 82 places, 93 transitions, 660 flow. Second operand 6 states and 150 transitions. [2024-06-28 02:22:43,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 115 transitions, 942 flow [2024-06-28 02:22:43,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 115 transitions, 926 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-06-28 02:22:43,227 INFO L231 Difference]: Finished difference. Result has 88 places, 95 transitions, 713 flow [2024-06-28 02:22:43,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=713, PETRI_PLACES=88, PETRI_TRANSITIONS=95} [2024-06-28 02:22:43,227 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 46 predicate places. [2024-06-28 02:22:43,228 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 95 transitions, 713 flow [2024-06-28 02:22:43,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2024-06-28 02:22:43,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:43,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:43,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 02:22:43,230 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:43,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:43,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1226086619, now seen corresponding path program 2 times [2024-06-28 02:22:43,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:43,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966179652] [2024-06-28 02:22:43,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:43,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:43,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:43,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:43,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:43,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966179652] [2024-06-28 02:22:43,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966179652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:43,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:43,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:43,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319385406] [2024-06-28 02:22:43,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:43,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:43,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:43,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:43,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:43,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:22:43,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 95 transitions, 713 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2024-06-28 02:22:43,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:43,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:22:43,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:43,574 INFO L124 PetriNetUnfolderBase]: 988/1653 cut-off events. [2024-06-28 02:22:43,574 INFO L125 PetriNetUnfolderBase]: For 18074/18074 co-relation queries the response was YES. [2024-06-28 02:22:43,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7837 conditions, 1653 events. 988/1653 cut-off events. For 18074/18074 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8521 event pairs, 273 based on Foata normal form. 4/1652 useless extension candidates. Maximal degree in co-relation 7799. Up to 1345 conditions per place. [2024-06-28 02:22:43,586 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 88 selfloop transitions, 22 changer transitions 0/118 dead transitions. [2024-06-28 02:22:43,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 118 transitions, 1007 flow [2024-06-28 02:22:43,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:43,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:43,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-28 02:22:43,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6097560975609756 [2024-06-28 02:22:43,588 INFO L175 Difference]: Start difference. First operand has 88 places, 95 transitions, 713 flow. Second operand 6 states and 150 transitions. [2024-06-28 02:22:43,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 118 transitions, 1007 flow [2024-06-28 02:22:43,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 118 transitions, 956 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 02:22:43,605 INFO L231 Difference]: Finished difference. Result has 90 places, 97 transitions, 739 flow [2024-06-28 02:22:43,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=739, PETRI_PLACES=90, PETRI_TRANSITIONS=97} [2024-06-28 02:22:43,606 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 48 predicate places. [2024-06-28 02:22:43,606 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 97 transitions, 739 flow [2024-06-28 02:22:43,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2024-06-28 02:22:43,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:43,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:43,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 02:22:43,606 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:43,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:43,607 INFO L85 PathProgramCache]: Analyzing trace with hash -270590088, now seen corresponding path program 2 times [2024-06-28 02:22:43,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:43,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107715499] [2024-06-28 02:22:43,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:43,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:43,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:43,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:43,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:43,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107715499] [2024-06-28 02:22:43,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107715499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:43,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:43,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:22:43,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569126859] [2024-06-28 02:22:43,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:43,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:43,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:43,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:43,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:43,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-06-28 02:22:43,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 97 transitions, 739 flow. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 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) [2024-06-28 02:22:43,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:43,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-06-28 02:22:43,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:43,946 INFO L124 PetriNetUnfolderBase]: 914/1585 cut-off events. [2024-06-28 02:22:43,947 INFO L125 PetriNetUnfolderBase]: For 19238/19238 co-relation queries the response was YES. [2024-06-28 02:22:43,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7625 conditions, 1585 events. 914/1585 cut-off events. For 19238/19238 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 8384 event pairs, 296 based on Foata normal form. 4/1587 useless extension candidates. Maximal degree in co-relation 7586. Up to 1321 conditions per place. [2024-06-28 02:22:43,958 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 79 selfloop transitions, 19 changer transitions 0/114 dead transitions. [2024-06-28 02:22:43,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 114 transitions, 997 flow [2024-06-28 02:22:43,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:22:43,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:22:43,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2024-06-28 02:22:43,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.676829268292683 [2024-06-28 02:22:43,959 INFO L175 Difference]: Start difference. First operand has 90 places, 97 transitions, 739 flow. Second operand 4 states and 111 transitions. [2024-06-28 02:22:43,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 114 transitions, 997 flow [2024-06-28 02:22:43,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 114 transitions, 932 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 02:22:43,982 INFO L231 Difference]: Finished difference. Result has 90 places, 100 transitions, 760 flow [2024-06-28 02:22:43,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=760, PETRI_PLACES=90, PETRI_TRANSITIONS=100} [2024-06-28 02:22:43,983 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 48 predicate places. [2024-06-28 02:22:43,983 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 100 transitions, 760 flow [2024-06-28 02:22:43,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 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) [2024-06-28 02:22:43,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:43,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:43,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 02:22:43,983 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:43,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:43,984 INFO L85 PathProgramCache]: Analyzing trace with hash 47155577, now seen corresponding path program 1 times [2024-06-28 02:22:43,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:43,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668789250] [2024-06-28 02:22:43,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:43,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:43,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:44,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:44,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:44,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668789250] [2024-06-28 02:22:44,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668789250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:44,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:44,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:44,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648197066] [2024-06-28 02:22:44,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:44,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:44,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:44,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:44,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:44,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:22:44,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 100 transitions, 760 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 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) [2024-06-28 02:22:44,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:44,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:22:44,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:44,426 INFO L124 PetriNetUnfolderBase]: 1034/1727 cut-off events. [2024-06-28 02:22:44,426 INFO L125 PetriNetUnfolderBase]: For 22305/22305 co-relation queries the response was YES. [2024-06-28 02:22:44,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8649 conditions, 1727 events. 1034/1727 cut-off events. For 22305/22305 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8942 event pairs, 180 based on Foata normal form. 4/1729 useless extension candidates. Maximal degree in co-relation 8609. Up to 1452 conditions per place. [2024-06-28 02:22:44,437 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 114 selfloop transitions, 19 changer transitions 0/141 dead transitions. [2024-06-28 02:22:44,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 141 transitions, 1238 flow [2024-06-28 02:22:44,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:44,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:44,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 02:22:44,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6067073170731707 [2024-06-28 02:22:44,440 INFO L175 Difference]: Start difference. First operand has 90 places, 100 transitions, 760 flow. Second operand 8 states and 199 transitions. [2024-06-28 02:22:44,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 141 transitions, 1238 flow [2024-06-28 02:22:44,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 141 transitions, 1204 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:44,465 INFO L231 Difference]: Finished difference. Result has 96 places, 104 transitions, 827 flow [2024-06-28 02:22:44,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=827, PETRI_PLACES=96, PETRI_TRANSITIONS=104} [2024-06-28 02:22:44,465 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 54 predicate places. [2024-06-28 02:22:44,466 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 104 transitions, 827 flow [2024-06-28 02:22:44,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 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) [2024-06-28 02:22:44,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:44,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:44,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 02:22:44,466 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:44,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:44,467 INFO L85 PathProgramCache]: Analyzing trace with hash 160240411, now seen corresponding path program 2 times [2024-06-28 02:22:44,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:44,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008143938] [2024-06-28 02:22:44,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:44,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:44,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:44,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:44,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:44,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008143938] [2024-06-28 02:22:44,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008143938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:44,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:44,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:44,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336773489] [2024-06-28 02:22:44,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:44,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:44,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:44,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:44,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:44,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:22:44,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 104 transitions, 827 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 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) [2024-06-28 02:22:44,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:44,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:22:44,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:44,904 INFO L124 PetriNetUnfolderBase]: 1026/1715 cut-off events. [2024-06-28 02:22:44,905 INFO L125 PetriNetUnfolderBase]: For 24167/24167 co-relation queries the response was YES. [2024-06-28 02:22:44,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8782 conditions, 1715 events. 1026/1715 cut-off events. For 24167/24167 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8864 event pairs, 264 based on Foata normal form. 4/1717 useless extension candidates. Maximal degree in co-relation 8741. Up to 1499 conditions per place. [2024-06-28 02:22:44,916 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 111 selfloop transitions, 15 changer transitions 0/134 dead transitions. [2024-06-28 02:22:44,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 134 transitions, 1155 flow [2024-06-28 02:22:44,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:44,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:44,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-28 02:22:44,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6062717770034843 [2024-06-28 02:22:44,917 INFO L175 Difference]: Start difference. First operand has 96 places, 104 transitions, 827 flow. Second operand 7 states and 174 transitions. [2024-06-28 02:22:44,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 134 transitions, 1155 flow [2024-06-28 02:22:44,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 134 transitions, 1097 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-28 02:22:44,944 INFO L231 Difference]: Finished difference. Result has 99 places, 104 transitions, 806 flow [2024-06-28 02:22:44,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=806, PETRI_PLACES=99, PETRI_TRANSITIONS=104} [2024-06-28 02:22:44,944 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 57 predicate places. [2024-06-28 02:22:44,945 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 104 transitions, 806 flow [2024-06-28 02:22:44,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 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) [2024-06-28 02:22:44,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:44,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:44,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 02:22:44,945 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:44,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:44,946 INFO L85 PathProgramCache]: Analyzing trace with hash 858263589, now seen corresponding path program 3 times [2024-06-28 02:22:44,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:44,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389925503] [2024-06-28 02:22:44,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:44,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:45,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:45,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:45,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389925503] [2024-06-28 02:22:45,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389925503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:45,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:45,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:45,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664305212] [2024-06-28 02:22:45,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:45,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:45,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:45,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:45,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:45,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:22:45,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 104 transitions, 806 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 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) [2024-06-28 02:22:45,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:45,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:22:45,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:45,278 INFO L124 PetriNetUnfolderBase]: 1043/1733 cut-off events. [2024-06-28 02:22:45,279 INFO L125 PetriNetUnfolderBase]: For 26874/26877 co-relation queries the response was YES. [2024-06-28 02:22:45,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8961 conditions, 1733 events. 1043/1733 cut-off events. For 26874/26877 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8931 event pairs, 288 based on Foata normal form. 4/1727 useless extension candidates. Maximal degree in co-relation 8918. Up to 1408 conditions per place. [2024-06-28 02:22:45,290 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 85 selfloop transitions, 40 changer transitions 0/133 dead transitions. [2024-06-28 02:22:45,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 133 transitions, 1154 flow [2024-06-28 02:22:45,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:45,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:45,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-28 02:22:45,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6236933797909407 [2024-06-28 02:22:45,291 INFO L175 Difference]: Start difference. First operand has 99 places, 104 transitions, 806 flow. Second operand 7 states and 179 transitions. [2024-06-28 02:22:45,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 133 transitions, 1154 flow [2024-06-28 02:22:45,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 133 transitions, 1119 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:45,319 INFO L231 Difference]: Finished difference. Result has 100 places, 106 transitions, 892 flow [2024-06-28 02:22:45,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=892, PETRI_PLACES=100, PETRI_TRANSITIONS=106} [2024-06-28 02:22:45,320 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 58 predicate places. [2024-06-28 02:22:45,320 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 106 transitions, 892 flow [2024-06-28 02:22:45,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 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) [2024-06-28 02:22:45,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:45,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:45,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 02:22:45,321 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:45,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:45,321 INFO L85 PathProgramCache]: Analyzing trace with hash 190543555, now seen corresponding path program 1 times [2024-06-28 02:22:45,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:45,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074210545] [2024-06-28 02:22:45,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:45,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:45,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:45,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:45,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074210545] [2024-06-28 02:22:45,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074210545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:45,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:45,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:45,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263617861] [2024-06-28 02:22:45,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:45,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:45,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:45,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:45,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:45,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-06-28 02:22:45,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 106 transitions, 892 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2024-06-28 02:22:45,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:45,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-06-28 02:22:45,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:45,634 INFO L124 PetriNetUnfolderBase]: 970/1673 cut-off events. [2024-06-28 02:22:45,634 INFO L125 PetriNetUnfolderBase]: For 28891/28900 co-relation queries the response was YES. [2024-06-28 02:22:45,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8941 conditions, 1673 events. 970/1673 cut-off events. For 28891/28900 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8896 event pairs, 265 based on Foata normal form. 4/1675 useless extension candidates. Maximal degree in co-relation 8897. Up to 1392 conditions per place. [2024-06-28 02:22:45,646 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 86 selfloop transitions, 27 changer transitions 0/129 dead transitions. [2024-06-28 02:22:45,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 129 transitions, 1266 flow [2024-06-28 02:22:45,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:45,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:45,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-28 02:22:45,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6178861788617886 [2024-06-28 02:22:45,648 INFO L175 Difference]: Start difference. First operand has 100 places, 106 transitions, 892 flow. Second operand 6 states and 152 transitions. [2024-06-28 02:22:45,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 129 transitions, 1266 flow [2024-06-28 02:22:45,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 129 transitions, 1163 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:45,679 INFO L231 Difference]: Finished difference. Result has 101 places, 112 transitions, 919 flow [2024-06-28 02:22:45,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=919, PETRI_PLACES=101, PETRI_TRANSITIONS=112} [2024-06-28 02:22:45,680 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 59 predicate places. [2024-06-28 02:22:45,680 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 112 transitions, 919 flow [2024-06-28 02:22:45,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2024-06-28 02:22:45,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:45,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:45,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 02:22:45,681 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:45,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:45,681 INFO L85 PathProgramCache]: Analyzing trace with hash 2063316041, now seen corresponding path program 4 times [2024-06-28 02:22:45,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:45,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442434884] [2024-06-28 02:22:45,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:45,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:45,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:45,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:45,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:45,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442434884] [2024-06-28 02:22:45,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442434884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:45,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:45,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:45,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348000572] [2024-06-28 02:22:45,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:45,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:45,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:45,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:45,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:45,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:22:45,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 112 transitions, 919 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 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) [2024-06-28 02:22:45,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:45,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:22:45,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:46,010 INFO L124 PetriNetUnfolderBase]: 1103/1836 cut-off events. [2024-06-28 02:22:46,010 INFO L125 PetriNetUnfolderBase]: For 35538/35538 co-relation queries the response was YES. [2024-06-28 02:22:46,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9781 conditions, 1836 events. 1103/1836 cut-off events. For 35538/35538 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9668 event pairs, 287 based on Foata normal form. 20/1848 useless extension candidates. Maximal degree in co-relation 9736. Up to 1416 conditions per place. [2024-06-28 02:22:46,022 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 96 selfloop transitions, 37 changer transitions 0/141 dead transitions. [2024-06-28 02:22:46,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 141 transitions, 1301 flow [2024-06-28 02:22:46,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:46,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:46,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-28 02:22:46,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6202090592334495 [2024-06-28 02:22:46,024 INFO L175 Difference]: Start difference. First operand has 101 places, 112 transitions, 919 flow. Second operand 7 states and 178 transitions. [2024-06-28 02:22:46,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 141 transitions, 1301 flow [2024-06-28 02:22:46,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 141 transitions, 1262 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:46,061 INFO L231 Difference]: Finished difference. Result has 106 places, 114 transitions, 1000 flow [2024-06-28 02:22:46,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=880, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1000, PETRI_PLACES=106, PETRI_TRANSITIONS=114} [2024-06-28 02:22:46,063 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 64 predicate places. [2024-06-28 02:22:46,063 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 114 transitions, 1000 flow [2024-06-28 02:22:46,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 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) [2024-06-28 02:22:46,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:46,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:46,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 02:22:46,064 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:46,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:46,064 INFO L85 PathProgramCache]: Analyzing trace with hash 574328515, now seen corresponding path program 2 times [2024-06-28 02:22:46,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:46,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178991195] [2024-06-28 02:22:46,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:46,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:46,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:46,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:46,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:46,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178991195] [2024-06-28 02:22:46,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178991195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:46,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:46,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:46,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95132236] [2024-06-28 02:22:46,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:46,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:46,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:46,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:46,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:46,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-06-28 02:22:46,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 114 transitions, 1000 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2024-06-28 02:22:46,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:46,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-06-28 02:22:46,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:46,371 INFO L124 PetriNetUnfolderBase]: 1014/1751 cut-off events. [2024-06-28 02:22:46,372 INFO L125 PetriNetUnfolderBase]: For 33875/33884 co-relation queries the response was YES. [2024-06-28 02:22:46,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9612 conditions, 1751 events. 1014/1751 cut-off events. For 33875/33884 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9485 event pairs, 272 based on Foata normal form. 11/1760 useless extension candidates. Maximal degree in co-relation 9565. Up to 1485 conditions per place. [2024-06-28 02:22:46,386 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 91 selfloop transitions, 22 changer transitions 0/129 dead transitions. [2024-06-28 02:22:46,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 129 transitions, 1264 flow [2024-06-28 02:22:46,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:46,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:46,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-06-28 02:22:46,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6390243902439025 [2024-06-28 02:22:46,387 INFO L175 Difference]: Start difference. First operand has 106 places, 114 transitions, 1000 flow. Second operand 5 states and 131 transitions. [2024-06-28 02:22:46,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 129 transitions, 1264 flow [2024-06-28 02:22:46,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 129 transitions, 1164 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:46,433 INFO L231 Difference]: Finished difference. Result has 106 places, 114 transitions, 950 flow [2024-06-28 02:22:46,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=950, PETRI_PLACES=106, PETRI_TRANSITIONS=114} [2024-06-28 02:22:46,433 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 64 predicate places. [2024-06-28 02:22:46,434 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 114 transitions, 950 flow [2024-06-28 02:22:46,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2024-06-28 02:22:46,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:46,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:46,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 02:22:46,434 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:46,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:46,435 INFO L85 PathProgramCache]: Analyzing trace with hash 397292103, now seen corresponding path program 1 times [2024-06-28 02:22:46,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:46,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893648823] [2024-06-28 02:22:46,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:46,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:46,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:46,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:46,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893648823] [2024-06-28 02:22:46,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893648823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:46,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:46,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:46,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535554507] [2024-06-28 02:22:46,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:46,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:46,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:46,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:46,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:46,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:22:46,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 114 transitions, 950 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-06-28 02:22:46,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:46,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:22:46,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:46,726 INFO L124 PetriNetUnfolderBase]: 1115/1872 cut-off events. [2024-06-28 02:22:46,726 INFO L125 PetriNetUnfolderBase]: For 36319/36319 co-relation queries the response was YES. [2024-06-28 02:22:46,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10028 conditions, 1872 events. 1115/1872 cut-off events. For 36319/36319 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9961 event pairs, 277 based on Foata normal form. 2/1869 useless extension candidates. Maximal degree in co-relation 9980. Up to 1576 conditions per place. [2024-06-28 02:22:46,740 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 109 selfloop transitions, 34 changer transitions 0/151 dead transitions. [2024-06-28 02:22:46,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 151 transitions, 1528 flow [2024-06-28 02:22:46,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:46,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:46,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-28 02:22:46,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6178861788617886 [2024-06-28 02:22:46,741 INFO L175 Difference]: Start difference. First operand has 106 places, 114 transitions, 950 flow. Second operand 6 states and 152 transitions. [2024-06-28 02:22:46,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 151 transitions, 1528 flow [2024-06-28 02:22:46,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 151 transitions, 1452 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 02:22:46,767 INFO L231 Difference]: Finished difference. Result has 110 places, 132 transitions, 1145 flow [2024-06-28 02:22:46,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1145, PETRI_PLACES=110, PETRI_TRANSITIONS=132} [2024-06-28 02:22:46,767 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 68 predicate places. [2024-06-28 02:22:46,767 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 132 transitions, 1145 flow [2024-06-28 02:22:46,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-06-28 02:22:46,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:46,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:46,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 02:22:46,768 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:46,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:46,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1251394355, now seen corresponding path program 2 times [2024-06-28 02:22:46,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:46,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118591912] [2024-06-28 02:22:46,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:46,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:46,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:46,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:46,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:46,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118591912] [2024-06-28 02:22:46,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118591912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:46,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:46,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:46,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813309248] [2024-06-28 02:22:46,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:46,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:46,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:46,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:46,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:46,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:22:46,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 132 transitions, 1145 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-06-28 02:22:46,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:46,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:22:46,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:47,105 INFO L124 PetriNetUnfolderBase]: 1181/1989 cut-off events. [2024-06-28 02:22:47,105 INFO L125 PetriNetUnfolderBase]: For 41492/41492 co-relation queries the response was YES. [2024-06-28 02:22:47,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11194 conditions, 1989 events. 1181/1989 cut-off events. For 41492/41492 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 10739 event pairs, 271 based on Foata normal form. 4/1991 useless extension candidates. Maximal degree in co-relation 11143. Up to 1733 conditions per place. [2024-06-28 02:22:47,120 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 126 selfloop transitions, 35 changer transitions 0/169 dead transitions. [2024-06-28 02:22:47,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 169 transitions, 1771 flow [2024-06-28 02:22:47,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:47,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:47,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-28 02:22:47,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5853658536585366 [2024-06-28 02:22:47,122 INFO L175 Difference]: Start difference. First operand has 110 places, 132 transitions, 1145 flow. Second operand 7 states and 168 transitions. [2024-06-28 02:22:47,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 169 transitions, 1771 flow [2024-06-28 02:22:47,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 169 transitions, 1719 flow, removed 26 selfloop flow, removed 0 redundant places. [2024-06-28 02:22:47,162 INFO L231 Difference]: Finished difference. Result has 118 places, 152 transitions, 1422 flow [2024-06-28 02:22:47,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1107, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1422, PETRI_PLACES=118, PETRI_TRANSITIONS=152} [2024-06-28 02:22:47,163 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 76 predicate places. [2024-06-28 02:22:47,164 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 152 transitions, 1422 flow [2024-06-28 02:22:47,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-06-28 02:22:47,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:47,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:47,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 02:22:47,164 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:47,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:47,165 INFO L85 PathProgramCache]: Analyzing trace with hash 208423943, now seen corresponding path program 3 times [2024-06-28 02:22:47,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:47,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858302336] [2024-06-28 02:22:47,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:47,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:47,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:47,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:47,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:47,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858302336] [2024-06-28 02:22:47,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858302336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:47,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:47,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:47,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202866831] [2024-06-28 02:22:47,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:47,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:47,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:47,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:47,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:47,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:22:47,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 152 transitions, 1422 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-06-28 02:22:47,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:47,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:22:47,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:47,551 INFO L124 PetriNetUnfolderBase]: 1229/2070 cut-off events. [2024-06-28 02:22:47,551 INFO L125 PetriNetUnfolderBase]: For 46719/46719 co-relation queries the response was YES. [2024-06-28 02:22:47,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12219 conditions, 2070 events. 1229/2070 cut-off events. For 46719/46719 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 11265 event pairs, 271 based on Foata normal form. 4/2072 useless extension candidates. Maximal degree in co-relation 12164. Up to 1695 conditions per place. [2024-06-28 02:22:47,568 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 121 selfloop transitions, 70 changer transitions 0/199 dead transitions. [2024-06-28 02:22:47,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 199 transitions, 2152 flow [2024-06-28 02:22:47,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:47,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:47,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-28 02:22:47,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6376306620209059 [2024-06-28 02:22:47,570 INFO L175 Difference]: Start difference. First operand has 118 places, 152 transitions, 1422 flow. Second operand 7 states and 183 transitions. [2024-06-28 02:22:47,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 199 transitions, 2152 flow [2024-06-28 02:22:47,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 199 transitions, 2057 flow, removed 37 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:47,622 INFO L231 Difference]: Finished difference. Result has 125 places, 171 transitions, 1797 flow [2024-06-28 02:22:47,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1327, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1797, PETRI_PLACES=125, PETRI_TRANSITIONS=171} [2024-06-28 02:22:47,622 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 83 predicate places. [2024-06-28 02:22:47,622 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 171 transitions, 1797 flow [2024-06-28 02:22:47,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-06-28 02:22:47,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:47,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:47,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 02:22:47,623 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:47,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:47,623 INFO L85 PathProgramCache]: Analyzing trace with hash 208670207, now seen corresponding path program 1 times [2024-06-28 02:22:47,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:47,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651551192] [2024-06-28 02:22:47,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:47,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:47,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:47,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:47,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651551192] [2024-06-28 02:22:47,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651551192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:47,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:47,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:47,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122590610] [2024-06-28 02:22:47,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:47,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:47,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:47,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:47,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:47,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-06-28 02:22:47,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 171 transitions, 1797 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2024-06-28 02:22:47,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:47,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-06-28 02:22:47,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:47,955 INFO L124 PetriNetUnfolderBase]: 1162/2003 cut-off events. [2024-06-28 02:22:47,955 INFO L125 PetriNetUnfolderBase]: For 50019/50019 co-relation queries the response was YES. [2024-06-28 02:22:47,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12510 conditions, 2003 events. 1162/2003 cut-off events. For 50019/50019 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 11058 event pairs, 270 based on Foata normal form. 2/2003 useless extension candidates. Maximal degree in co-relation 12451. Up to 1647 conditions per place. [2024-06-28 02:22:47,973 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 142 selfloop transitions, 10 changer transitions 0/182 dead transitions. [2024-06-28 02:22:47,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 182 transitions, 2153 flow [2024-06-28 02:22:47,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:22:47,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:22:47,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-06-28 02:22:47,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6280487804878049 [2024-06-28 02:22:47,975 INFO L175 Difference]: Start difference. First operand has 125 places, 171 transitions, 1797 flow. Second operand 4 states and 103 transitions. [2024-06-28 02:22:47,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 182 transitions, 2153 flow [2024-06-28 02:22:48,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 182 transitions, 2060 flow, removed 36 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:48,038 INFO L231 Difference]: Finished difference. Result has 127 places, 173 transitions, 1763 flow [2024-06-28 02:22:48,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1706, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1763, PETRI_PLACES=127, PETRI_TRANSITIONS=173} [2024-06-28 02:22:48,042 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 85 predicate places. [2024-06-28 02:22:48,043 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 173 transitions, 1763 flow [2024-06-28 02:22:48,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2024-06-28 02:22:48,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:48,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:48,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 02:22:48,043 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:48,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:48,044 INFO L85 PathProgramCache]: Analyzing trace with hash 628897646, now seen corresponding path program 1 times [2024-06-28 02:22:48,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:48,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916218600] [2024-06-28 02:22:48,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:48,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:48,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:48,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:48,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:48,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916218600] [2024-06-28 02:22:48,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916218600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:48,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:48,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:48,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011695158] [2024-06-28 02:22:48,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:48,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:48,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:48,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:48,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:48,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:22:48,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 173 transitions, 1763 flow. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 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) [2024-06-28 02:22:48,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:48,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:22:48,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:48,590 INFO L124 PetriNetUnfolderBase]: 1351/2278 cut-off events. [2024-06-28 02:22:48,591 INFO L125 PetriNetUnfolderBase]: For 59170/59170 co-relation queries the response was YES. [2024-06-28 02:22:48,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14011 conditions, 2278 events. 1351/2278 cut-off events. For 59170/59170 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 12783 event pairs, 191 based on Foata normal form. 12/2282 useless extension candidates. Maximal degree in co-relation 13950. Up to 1603 conditions per place. [2024-06-28 02:22:48,611 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 165 selfloop transitions, 35 changer transitions 0/208 dead transitions. [2024-06-28 02:22:48,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 208 transitions, 2407 flow [2024-06-28 02:22:48,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:48,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:48,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-28 02:22:48,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6341463414634146 [2024-06-28 02:22:48,612 INFO L175 Difference]: Start difference. First operand has 127 places, 173 transitions, 1763 flow. Second operand 7 states and 182 transitions. [2024-06-28 02:22:48,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 208 transitions, 2407 flow [2024-06-28 02:22:48,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 208 transitions, 2366 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:48,671 INFO L231 Difference]: Finished difference. Result has 132 places, 175 transitions, 1844 flow [2024-06-28 02:22:48,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1722, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1844, PETRI_PLACES=132, PETRI_TRANSITIONS=175} [2024-06-28 02:22:48,673 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 90 predicate places. [2024-06-28 02:22:48,674 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 175 transitions, 1844 flow [2024-06-28 02:22:48,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 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) [2024-06-28 02:22:48,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:48,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:48,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 02:22:48,674 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:48,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:48,675 INFO L85 PathProgramCache]: Analyzing trace with hash 822938266, now seen corresponding path program 2 times [2024-06-28 02:22:48,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:48,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219131971] [2024-06-28 02:22:48,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:48,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:48,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:48,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:48,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:48,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219131971] [2024-06-28 02:22:48,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219131971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:48,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:48,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:48,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505114928] [2024-06-28 02:22:48,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:48,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:48,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:48,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:48,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:48,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:22:48,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 175 transitions, 1844 flow. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 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) [2024-06-28 02:22:48,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:48,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:22:48,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:49,123 INFO L124 PetriNetUnfolderBase]: 1392/2359 cut-off events. [2024-06-28 02:22:49,123 INFO L125 PetriNetUnfolderBase]: For 63111/63111 co-relation queries the response was YES. [2024-06-28 02:22:49,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14646 conditions, 2359 events. 1392/2359 cut-off events. For 63111/63111 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 13438 event pairs, 258 based on Foata normal form. 12/2363 useless extension candidates. Maximal degree in co-relation 14584. Up to 1737 conditions per place. [2024-06-28 02:22:49,142 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 164 selfloop transitions, 32 changer transitions 0/204 dead transitions. [2024-06-28 02:22:49,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 204 transitions, 2452 flow [2024-06-28 02:22:49,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:49,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:49,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-06-28 02:22:49,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6463414634146342 [2024-06-28 02:22:49,144 INFO L175 Difference]: Start difference. First operand has 132 places, 175 transitions, 1844 flow. Second operand 6 states and 159 transitions. [2024-06-28 02:22:49,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 204 transitions, 2452 flow [2024-06-28 02:22:49,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 204 transitions, 2408 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 02:22:49,214 INFO L231 Difference]: Finished difference. Result has 135 places, 176 transitions, 1894 flow [2024-06-28 02:22:49,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1800, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1894, PETRI_PLACES=135, PETRI_TRANSITIONS=176} [2024-06-28 02:22:49,215 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 93 predicate places. [2024-06-28 02:22:49,215 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 176 transitions, 1894 flow [2024-06-28 02:22:49,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 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) [2024-06-28 02:22:49,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:49,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:49,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 02:22:49,216 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:49,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:49,220 INFO L85 PathProgramCache]: Analyzing trace with hash 823086136, now seen corresponding path program 3 times [2024-06-28 02:22:49,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:49,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015022793] [2024-06-28 02:22:49,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:49,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:49,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:49,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:49,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:49,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015022793] [2024-06-28 02:22:49,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015022793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:49,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:49,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:49,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452845788] [2024-06-28 02:22:49,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:49,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:49,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:49,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:49,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:49,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:22:49,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 176 transitions, 1894 flow. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 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) [2024-06-28 02:22:49,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:49,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:22:49,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:49,709 INFO L124 PetriNetUnfolderBase]: 1364/2320 cut-off events. [2024-06-28 02:22:49,709 INFO L125 PetriNetUnfolderBase]: For 63525/63525 co-relation queries the response was YES. [2024-06-28 02:22:49,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14233 conditions, 2320 events. 1364/2320 cut-off events. For 63525/63525 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 13188 event pairs, 252 based on Foata normal form. 16/2328 useless extension candidates. Maximal degree in co-relation 14169. Up to 1857 conditions per place. [2024-06-28 02:22:49,729 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 160 selfloop transitions, 31 changer transitions 0/199 dead transitions. [2024-06-28 02:22:49,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 199 transitions, 2352 flow [2024-06-28 02:22:49,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:49,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:49,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-06-28 02:22:49,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6382113821138211 [2024-06-28 02:22:49,730 INFO L175 Difference]: Start difference. First operand has 135 places, 176 transitions, 1894 flow. Second operand 6 states and 157 transitions. [2024-06-28 02:22:49,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 199 transitions, 2352 flow [2024-06-28 02:22:49,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 199 transitions, 2265 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 02:22:49,803 INFO L231 Difference]: Finished difference. Result has 137 places, 176 transitions, 1880 flow [2024-06-28 02:22:49,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1807, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1880, PETRI_PLACES=137, PETRI_TRANSITIONS=176} [2024-06-28 02:22:49,804 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 95 predicate places. [2024-06-28 02:22:49,804 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 176 transitions, 1880 flow [2024-06-28 02:22:49,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 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) [2024-06-28 02:22:49,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:49,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:49,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 02:22:49,805 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:49,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:49,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1217777194, now seen corresponding path program 4 times [2024-06-28 02:22:49,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:49,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695019235] [2024-06-28 02:22:49,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:49,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:49,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:49,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:49,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:49,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695019235] [2024-06-28 02:22:49,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695019235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:49,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:49,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:49,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233263267] [2024-06-28 02:22:49,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:49,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:49,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:49,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:49,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:49,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:22:49,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 176 transitions, 1880 flow. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 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) [2024-06-28 02:22:49,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:49,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:22:49,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:50,252 INFO L124 PetriNetUnfolderBase]: 1422/2403 cut-off events. [2024-06-28 02:22:50,253 INFO L125 PetriNetUnfolderBase]: For 67464/67464 co-relation queries the response was YES. [2024-06-28 02:22:50,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14704 conditions, 2403 events. 1422/2403 cut-off events. For 67464/67464 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 13700 event pairs, 319 based on Foata normal form. 16/2411 useless extension candidates. Maximal degree in co-relation 14639. Up to 1941 conditions per place. [2024-06-28 02:22:50,273 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 157 selfloop transitions, 39 changer transitions 0/204 dead transitions. [2024-06-28 02:22:50,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 204 transitions, 2382 flow [2024-06-28 02:22:50,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:50,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:50,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 02:22:50,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6167247386759582 [2024-06-28 02:22:50,274 INFO L175 Difference]: Start difference. First operand has 137 places, 176 transitions, 1880 flow. Second operand 7 states and 177 transitions. [2024-06-28 02:22:50,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 204 transitions, 2382 flow [2024-06-28 02:22:50,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 204 transitions, 2307 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:50,345 INFO L231 Difference]: Finished difference. Result has 139 places, 177 transitions, 1916 flow [2024-06-28 02:22:50,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1805, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1916, PETRI_PLACES=139, PETRI_TRANSITIONS=177} [2024-06-28 02:22:50,346 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 97 predicate places. [2024-06-28 02:22:50,346 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 177 transitions, 1916 flow [2024-06-28 02:22:50,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 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) [2024-06-28 02:22:50,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:50,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:50,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 02:22:50,347 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:50,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:50,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1417078984, now seen corresponding path program 5 times [2024-06-28 02:22:50,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:50,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355290097] [2024-06-28 02:22:50,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:50,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:50,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:50,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:50,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:50,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355290097] [2024-06-28 02:22:50,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355290097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:50,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:50,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:50,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239309313] [2024-06-28 02:22:50,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:50,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:50,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:50,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:50,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:50,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:22:50,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 177 transitions, 1916 flow. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 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) [2024-06-28 02:22:50,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:50,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:22:50,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:50,788 INFO L124 PetriNetUnfolderBase]: 1480/2521 cut-off events. [2024-06-28 02:22:50,788 INFO L125 PetriNetUnfolderBase]: For 72479/72479 co-relation queries the response was YES. [2024-06-28 02:22:50,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15342 conditions, 2521 events. 1480/2521 cut-off events. For 72479/72479 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 14627 event pairs, 339 based on Foata normal form. 16/2529 useless extension candidates. Maximal degree in co-relation 15276. Up to 2039 conditions per place. [2024-06-28 02:22:50,808 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 161 selfloop transitions, 36 changer transitions 0/205 dead transitions. [2024-06-28 02:22:50,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 205 transitions, 2422 flow [2024-06-28 02:22:50,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:50,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:50,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 02:22:50,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6132404181184669 [2024-06-28 02:22:50,809 INFO L175 Difference]: Start difference. First operand has 139 places, 177 transitions, 1916 flow. Second operand 7 states and 176 transitions. [2024-06-28 02:22:50,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 205 transitions, 2422 flow [2024-06-28 02:22:50,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 205 transitions, 2331 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:50,885 INFO L231 Difference]: Finished difference. Result has 141 places, 178 transitions, 1932 flow [2024-06-28 02:22:50,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1825, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1932, PETRI_PLACES=141, PETRI_TRANSITIONS=178} [2024-06-28 02:22:50,886 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 99 predicate places. [2024-06-28 02:22:50,886 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 178 transitions, 1932 flow [2024-06-28 02:22:50,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 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) [2024-06-28 02:22:50,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:50,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:50,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 02:22:50,887 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:50,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:50,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1417226854, now seen corresponding path program 6 times [2024-06-28 02:22:50,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:50,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589051735] [2024-06-28 02:22:50,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:50,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:50,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:50,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:50,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589051735] [2024-06-28 02:22:50,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589051735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:50,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:50,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:50,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550092952] [2024-06-28 02:22:50,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:50,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:50,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:50,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:50,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:51,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:22:51,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 178 transitions, 1932 flow. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 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) [2024-06-28 02:22:51,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:51,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:22:51,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:51,325 INFO L124 PetriNetUnfolderBase]: 1496/2553 cut-off events. [2024-06-28 02:22:51,326 INFO L125 PetriNetUnfolderBase]: For 72846/72846 co-relation queries the response was YES. [2024-06-28 02:22:51,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15389 conditions, 2553 events. 1496/2553 cut-off events. For 72846/72846 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 14909 event pairs, 332 based on Foata normal form. 12/2557 useless extension candidates. Maximal degree in co-relation 15322. Up to 1772 conditions per place. [2024-06-28 02:22:51,346 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 161 selfloop transitions, 40 changer transitions 0/209 dead transitions. [2024-06-28 02:22:51,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 209 transitions, 2462 flow [2024-06-28 02:22:51,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:51,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:51,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-28 02:22:51,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6202090592334495 [2024-06-28 02:22:51,348 INFO L175 Difference]: Start difference. First operand has 141 places, 178 transitions, 1932 flow. Second operand 7 states and 178 transitions. [2024-06-28 02:22:51,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 209 transitions, 2462 flow [2024-06-28 02:22:51,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 209 transitions, 2375 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:51,489 INFO L231 Difference]: Finished difference. Result has 143 places, 179 transitions, 1962 flow [2024-06-28 02:22:51,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1845, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1962, PETRI_PLACES=143, PETRI_TRANSITIONS=179} [2024-06-28 02:22:51,491 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 101 predicate places. [2024-06-28 02:22:51,491 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 179 transitions, 1962 flow [2024-06-28 02:22:51,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 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) [2024-06-28 02:22:51,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:51,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:51,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 02:22:51,492 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:51,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:51,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1210152682, now seen corresponding path program 1 times [2024-06-28 02:22:51,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:51,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83676812] [2024-06-28 02:22:51,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:51,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:51,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:51,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:51,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83676812] [2024-06-28 02:22:51,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83676812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:51,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:51,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:51,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757287023] [2024-06-28 02:22:51,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:51,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:51,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:51,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:51,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:51,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:22:51,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 179 transitions, 1962 flow. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 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) [2024-06-28 02:22:51,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:51,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:22:51,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:51,930 INFO L124 PetriNetUnfolderBase]: 1537/2634 cut-off events. [2024-06-28 02:22:51,930 INFO L125 PetriNetUnfolderBase]: For 77285/77285 co-relation queries the response was YES. [2024-06-28 02:22:51,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15850 conditions, 2634 events. 1537/2634 cut-off events. For 77285/77285 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 15603 event pairs, 306 based on Foata normal form. 12/2638 useless extension candidates. Maximal degree in co-relation 15782. Up to 1853 conditions per place. [2024-06-28 02:22:51,952 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 158 selfloop transitions, 44 changer transitions 0/210 dead transitions. [2024-06-28 02:22:51,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 210 transitions, 2500 flow [2024-06-28 02:22:51,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:51,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:51,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-28 02:22:51,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.627177700348432 [2024-06-28 02:22:51,953 INFO L175 Difference]: Start difference. First operand has 143 places, 179 transitions, 1962 flow. Second operand 7 states and 180 transitions. [2024-06-28 02:22:51,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 210 transitions, 2500 flow [2024-06-28 02:22:52,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 210 transitions, 2401 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:52,040 INFO L231 Difference]: Finished difference. Result has 145 places, 180 transitions, 1989 flow [2024-06-28 02:22:52,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1863, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1989, PETRI_PLACES=145, PETRI_TRANSITIONS=180} [2024-06-28 02:22:52,040 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 103 predicate places. [2024-06-28 02:22:52,040 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 180 transitions, 1989 flow [2024-06-28 02:22:52,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 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) [2024-06-28 02:22:52,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:52,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:52,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 02:22:52,041 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:52,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:52,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1444518573, now seen corresponding path program 1 times [2024-06-28 02:22:52,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:52,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115984898] [2024-06-28 02:22:52,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:52,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:52,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:52,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:52,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:52,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115984898] [2024-06-28 02:22:52,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115984898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:52,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:52,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:52,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954184367] [2024-06-28 02:22:52,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:52,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:52,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:52,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:52,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:52,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:22:52,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 180 transitions, 1989 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-06-28 02:22:52,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:52,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:22:52,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:52,512 INFO L124 PetriNetUnfolderBase]: 1558/2669 cut-off events. [2024-06-28 02:22:52,512 INFO L125 PetriNetUnfolderBase]: For 77103/77106 co-relation queries the response was YES. [2024-06-28 02:22:52,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16196 conditions, 2669 events. 1558/2669 cut-off events. For 77103/77106 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 15794 event pairs, 368 based on Foata normal form. 1/2663 useless extension candidates. Maximal degree in co-relation 16127. Up to 2261 conditions per place. [2024-06-28 02:22:52,532 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 145 selfloop transitions, 61 changer transitions 0/214 dead transitions. [2024-06-28 02:22:52,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 214 transitions, 2816 flow [2024-06-28 02:22:52,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:52,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:52,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-06-28 02:22:52,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6341463414634146 [2024-06-28 02:22:52,534 INFO L175 Difference]: Start difference. First operand has 145 places, 180 transitions, 1989 flow. Second operand 6 states and 156 transitions. [2024-06-28 02:22:52,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 214 transitions, 2816 flow [2024-06-28 02:22:52,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 214 transitions, 2706 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:52,624 INFO L231 Difference]: Finished difference. Result has 147 places, 192 transitions, 2202 flow [2024-06-28 02:22:52,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1879, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2202, PETRI_PLACES=147, PETRI_TRANSITIONS=192} [2024-06-28 02:22:52,624 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 105 predicate places. [2024-06-28 02:22:52,624 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 192 transitions, 2202 flow [2024-06-28 02:22:52,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-06-28 02:22:52,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:52,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:52,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 02:22:52,625 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:52,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:52,625 INFO L85 PathProgramCache]: Analyzing trace with hash -40452925, now seen corresponding path program 2 times [2024-06-28 02:22:52,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:52,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159970196] [2024-06-28 02:22:52,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:52,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:52,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:52,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:52,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159970196] [2024-06-28 02:22:52,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159970196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:52,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:52,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:52,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131487386] [2024-06-28 02:22:52,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:52,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:52,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:52,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:52,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:52,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:22:52,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 192 transitions, 2202 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-06-28 02:22:52,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:52,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:22:52,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:53,053 INFO L124 PetriNetUnfolderBase]: 1563/2674 cut-off events. [2024-06-28 02:22:53,053 INFO L125 PetriNetUnfolderBase]: For 79710/79713 co-relation queries the response was YES. [2024-06-28 02:22:53,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16303 conditions, 2674 events. 1563/2674 cut-off events. For 79710/79713 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 15756 event pairs, 368 based on Foata normal form. 1/2668 useless extension candidates. Maximal degree in co-relation 16232. Up to 2268 conditions per place. [2024-06-28 02:22:53,076 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 142 selfloop transitions, 64 changer transitions 0/214 dead transitions. [2024-06-28 02:22:53,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 214 transitions, 2909 flow [2024-06-28 02:22:53,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:53,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:53,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-06-28 02:22:53,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6260162601626016 [2024-06-28 02:22:53,077 INFO L175 Difference]: Start difference. First operand has 147 places, 192 transitions, 2202 flow. Second operand 6 states and 154 transitions. [2024-06-28 02:22:53,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 214 transitions, 2909 flow [2024-06-28 02:22:53,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 214 transitions, 2830 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-06-28 02:22:53,264 INFO L231 Difference]: Finished difference. Result has 152 places, 195 transitions, 2296 flow [2024-06-28 02:22:53,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2126, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2296, PETRI_PLACES=152, PETRI_TRANSITIONS=195} [2024-06-28 02:22:53,265 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 110 predicate places. [2024-06-28 02:22:53,265 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 195 transitions, 2296 flow [2024-06-28 02:22:53,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-06-28 02:22:53,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:53,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:53,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 02:22:53,265 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:53,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:53,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1246932014, now seen corresponding path program 2 times [2024-06-28 02:22:53,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:53,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051092758] [2024-06-28 02:22:53,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:53,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:53,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:53,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:53,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:53,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051092758] [2024-06-28 02:22:53,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051092758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:53,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:53,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:53,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81857851] [2024-06-28 02:22:53,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:53,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:53,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:53,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:53,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:53,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:22:53,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 195 transitions, 2296 flow. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 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) [2024-06-28 02:22:53,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:53,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:22:53,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:53,780 INFO L124 PetriNetUnfolderBase]: 1604/2744 cut-off events. [2024-06-28 02:22:53,781 INFO L125 PetriNetUnfolderBase]: For 90912/90912 co-relation queries the response was YES. [2024-06-28 02:22:53,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16835 conditions, 2744 events. 1604/2744 cut-off events. For 90912/90912 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 16374 event pairs, 360 based on Foata normal form. 12/2748 useless extension candidates. Maximal degree in co-relation 16762. Up to 2144 conditions per place. [2024-06-28 02:22:53,806 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 179 selfloop transitions, 39 changer transitions 0/226 dead transitions. [2024-06-28 02:22:53,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 226 transitions, 2868 flow [2024-06-28 02:22:53,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:53,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:53,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-28 02:22:53,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.627177700348432 [2024-06-28 02:22:53,808 INFO L175 Difference]: Start difference. First operand has 152 places, 195 transitions, 2296 flow. Second operand 7 states and 180 transitions. [2024-06-28 02:22:53,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 226 transitions, 2868 flow [2024-06-28 02:22:53,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 226 transitions, 2743 flow, removed 24 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:53,930 INFO L231 Difference]: Finished difference. Result has 157 places, 196 transitions, 2289 flow [2024-06-28 02:22:53,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2171, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2289, PETRI_PLACES=157, PETRI_TRANSITIONS=196} [2024-06-28 02:22:53,930 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 115 predicate places. [2024-06-28 02:22:53,930 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 196 transitions, 2289 flow [2024-06-28 02:22:53,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 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) [2024-06-28 02:22:53,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:53,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:53,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 02:22:53,931 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:53,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:53,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1746880436, now seen corresponding path program 3 times [2024-06-28 02:22:53,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:53,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783679886] [2024-06-28 02:22:53,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:53,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:54,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:54,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:54,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783679886] [2024-06-28 02:22:54,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783679886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:54,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:54,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:54,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544722508] [2024-06-28 02:22:54,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:54,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:54,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:54,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:54,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:54,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:22:54,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 196 transitions, 2289 flow. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 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) [2024-06-28 02:22:54,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:54,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:22:54,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:54,390 INFO L124 PetriNetUnfolderBase]: 1584/2726 cut-off events. [2024-06-28 02:22:54,390 INFO L125 PetriNetUnfolderBase]: For 89033/89033 co-relation queries the response was YES. [2024-06-28 02:22:54,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16357 conditions, 2726 events. 1584/2726 cut-off events. For 89033/89033 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 16364 event pairs, 305 based on Foata normal form. 12/2730 useless extension candidates. Maximal degree in co-relation 16283. Up to 1455 conditions per place. [2024-06-28 02:22:54,413 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 172 selfloop transitions, 46 changer transitions 0/226 dead transitions. [2024-06-28 02:22:54,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 226 transitions, 2773 flow [2024-06-28 02:22:54,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:54,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:54,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-28 02:22:54,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6202090592334495 [2024-06-28 02:22:54,414 INFO L175 Difference]: Start difference. First operand has 157 places, 196 transitions, 2289 flow. Second operand 7 states and 178 transitions. [2024-06-28 02:22:54,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 226 transitions, 2773 flow [2024-06-28 02:22:54,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 226 transitions, 2657 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:54,515 INFO L231 Difference]: Finished difference. Result has 158 places, 195 transitions, 2215 flow [2024-06-28 02:22:54,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2119, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2215, PETRI_PLACES=158, PETRI_TRANSITIONS=195} [2024-06-28 02:22:54,515 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 116 predicate places. [2024-06-28 02:22:54,515 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 195 transitions, 2215 flow [2024-06-28 02:22:54,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 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) [2024-06-28 02:22:54,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:54,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:54,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 02:22:54,516 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:54,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:54,517 INFO L85 PathProgramCache]: Analyzing trace with hash -150907343, now seen corresponding path program 3 times [2024-06-28 02:22:54,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:54,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108225289] [2024-06-28 02:22:54,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:54,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:54,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:54,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:54,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108225289] [2024-06-28 02:22:54,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108225289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:54,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:54,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:54,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598588441] [2024-06-28 02:22:54,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:54,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:54,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:54,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:54,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:54,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:22:54,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 195 transitions, 2215 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-06-28 02:22:54,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:54,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:22:54,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:54,903 INFO L124 PetriNetUnfolderBase]: 1578/2713 cut-off events. [2024-06-28 02:22:54,903 INFO L125 PetriNetUnfolderBase]: For 77655/77655 co-relation queries the response was YES. [2024-06-28 02:22:54,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15905 conditions, 2713 events. 1578/2713 cut-off events. For 77655/77655 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 16230 event pairs, 357 based on Foata normal form. 2/2710 useless extension candidates. Maximal degree in co-relation 15830. Up to 2302 conditions per place. [2024-06-28 02:22:54,926 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 145 selfloop transitions, 60 changer transitions 0/213 dead transitions. [2024-06-28 02:22:54,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 213 transitions, 2813 flow [2024-06-28 02:22:54,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:54,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:54,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-06-28 02:22:54,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6138211382113821 [2024-06-28 02:22:54,927 INFO L175 Difference]: Start difference. First operand has 158 places, 195 transitions, 2215 flow. Second operand 6 states and 151 transitions. [2024-06-28 02:22:54,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 213 transitions, 2813 flow [2024-06-28 02:22:55,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 213 transitions, 2648 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:55,029 INFO L231 Difference]: Finished difference. Result has 158 places, 195 transitions, 2177 flow [2024-06-28 02:22:55,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2050, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2177, PETRI_PLACES=158, PETRI_TRANSITIONS=195} [2024-06-28 02:22:55,030 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 116 predicate places. [2024-06-28 02:22:55,030 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 195 transitions, 2177 flow [2024-06-28 02:22:55,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-06-28 02:22:55,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:55,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:55,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 02:22:55,031 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:55,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:55,031 INFO L85 PathProgramCache]: Analyzing trace with hash -565135467, now seen corresponding path program 4 times [2024-06-28 02:22:55,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:55,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500998647] [2024-06-28 02:22:55,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:55,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:55,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:55,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:55,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500998647] [2024-06-28 02:22:55,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500998647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:55,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:55,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:55,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677171965] [2024-06-28 02:22:55,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:55,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:55,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:55,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:55,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:55,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:22:55,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 195 transitions, 2177 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-06-28 02:22:55,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:55,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:22:55,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:55,446 INFO L124 PetriNetUnfolderBase]: 1562/2694 cut-off events. [2024-06-28 02:22:55,446 INFO L125 PetriNetUnfolderBase]: For 77591/77591 co-relation queries the response was YES. [2024-06-28 02:22:55,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15289 conditions, 2694 events. 1562/2694 cut-off events. For 77591/77591 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 16077 event pairs, 349 based on Foata normal form. 4/2696 useless extension candidates. Maximal degree in co-relation 15214. Up to 2383 conditions per place. [2024-06-28 02:22:55,467 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 165 selfloop transitions, 37 changer transitions 0/210 dead transitions. [2024-06-28 02:22:55,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 210 transitions, 2624 flow [2024-06-28 02:22:55,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:55,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:55,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-28 02:22:55,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.578397212543554 [2024-06-28 02:22:55,468 INFO L175 Difference]: Start difference. First operand has 158 places, 195 transitions, 2177 flow. Second operand 7 states and 166 transitions. [2024-06-28 02:22:55,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 210 transitions, 2624 flow [2024-06-28 02:22:55,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 210 transitions, 2534 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:55,560 INFO L231 Difference]: Finished difference. Result has 163 places, 195 transitions, 2176 flow [2024-06-28 02:22:55,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2088, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2176, PETRI_PLACES=163, PETRI_TRANSITIONS=195} [2024-06-28 02:22:55,560 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 121 predicate places. [2024-06-28 02:22:55,560 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 195 transitions, 2176 flow [2024-06-28 02:22:55,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-06-28 02:22:55,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:55,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:55,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 02:22:55,561 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:55,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:55,561 INFO L85 PathProgramCache]: Analyzing trace with hash -2128800201, now seen corresponding path program 5 times [2024-06-28 02:22:55,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:55,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639460222] [2024-06-28 02:22:55,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:55,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:55,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:55,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:55,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:55,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639460222] [2024-06-28 02:22:55,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639460222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:55,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:55,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:55,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541073869] [2024-06-28 02:22:55,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:55,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:55,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:55,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:55,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:55,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:22:55,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 195 transitions, 2176 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-06-28 02:22:55,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:55,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:22:55,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:56,000 INFO L124 PetriNetUnfolderBase]: 1558/2689 cut-off events. [2024-06-28 02:22:56,000 INFO L125 PetriNetUnfolderBase]: For 78912/78912 co-relation queries the response was YES. [2024-06-28 02:22:56,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15156 conditions, 2689 events. 1558/2689 cut-off events. For 78912/78912 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 16049 event pairs, 349 based on Foata normal form. 4/2691 useless extension candidates. Maximal degree in co-relation 15080. Up to 2269 conditions per place. [2024-06-28 02:22:56,022 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 142 selfloop transitions, 75 changer transitions 0/225 dead transitions. [2024-06-28 02:22:56,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 225 transitions, 2804 flow [2024-06-28 02:22:56,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:56,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:56,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-28 02:22:56,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6376306620209059 [2024-06-28 02:22:56,026 INFO L175 Difference]: Start difference. First operand has 163 places, 195 transitions, 2176 flow. Second operand 7 states and 183 transitions. [2024-06-28 02:22:56,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 225 transitions, 2804 flow [2024-06-28 02:22:56,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 225 transitions, 2730 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:56,145 INFO L231 Difference]: Finished difference. Result has 164 places, 198 transitions, 2336 flow [2024-06-28 02:22:56,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2102, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2336, PETRI_PLACES=164, PETRI_TRANSITIONS=198} [2024-06-28 02:22:56,146 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 122 predicate places. [2024-06-28 02:22:56,146 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 198 transitions, 2336 flow [2024-06-28 02:22:56,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-06-28 02:22:56,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:56,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:56,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 02:22:56,147 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:56,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:56,147 INFO L85 PathProgramCache]: Analyzing trace with hash 933295961, now seen corresponding path program 6 times [2024-06-28 02:22:56,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:56,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028648391] [2024-06-28 02:22:56,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:56,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:56,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:56,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:56,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:56,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028648391] [2024-06-28 02:22:56,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028648391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:56,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:56,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:56,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039910027] [2024-06-28 02:22:56,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:56,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:22:56,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:56,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:22:56,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:22:56,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:22:56,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 198 transitions, 2336 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-06-28 02:22:56,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:56,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:22:56,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:56,612 INFO L124 PetriNetUnfolderBase]: 1548/2674 cut-off events. [2024-06-28 02:22:56,612 INFO L125 PetriNetUnfolderBase]: For 80287/80290 co-relation queries the response was YES. [2024-06-28 02:22:56,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15273 conditions, 2674 events. 1548/2674 cut-off events. For 80287/80290 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 15978 event pairs, 357 based on Foata normal form. 4/2675 useless extension candidates. Maximal degree in co-relation 15196. Up to 2259 conditions per place. [2024-06-28 02:22:56,636 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 137 selfloop transitions, 75 changer transitions 0/220 dead transitions. [2024-06-28 02:22:56,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 220 transitions, 2816 flow [2024-06-28 02:22:56,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:22:56,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:22:56,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-06-28 02:22:56,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6463414634146342 [2024-06-28 02:22:56,641 INFO L175 Difference]: Start difference. First operand has 164 places, 198 transitions, 2336 flow. Second operand 6 states and 159 transitions. [2024-06-28 02:22:56,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 220 transitions, 2816 flow [2024-06-28 02:22:56,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 220 transitions, 2643 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:56,782 INFO L231 Difference]: Finished difference. Result has 164 places, 198 transitions, 2327 flow [2024-06-28 02:22:56,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2163, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2327, PETRI_PLACES=164, PETRI_TRANSITIONS=198} [2024-06-28 02:22:56,784 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 122 predicate places. [2024-06-28 02:22:56,784 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 198 transitions, 2327 flow [2024-06-28 02:22:56,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-06-28 02:22:56,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:56,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:56,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 02:22:56,785 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:56,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:56,785 INFO L85 PathProgramCache]: Analyzing trace with hash -2016186254, now seen corresponding path program 1 times [2024-06-28 02:22:56,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:56,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739822607] [2024-06-28 02:22:56,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:56,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:56,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:56,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:56,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739822607] [2024-06-28 02:22:56,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739822607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:56,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:56,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:56,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39514948] [2024-06-28 02:22:56,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:56,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:56,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:56,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:56,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:56,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:22:56,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 198 transitions, 2327 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:22:56,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:56,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:22:56,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:57,273 INFO L124 PetriNetUnfolderBase]: 1566/2681 cut-off events. [2024-06-28 02:22:57,273 INFO L125 PetriNetUnfolderBase]: For 77128/77128 co-relation queries the response was YES. [2024-06-28 02:22:57,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15307 conditions, 2681 events. 1566/2681 cut-off events. For 77128/77128 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 15946 event pairs, 358 based on Foata normal form. 2/2678 useless extension candidates. Maximal degree in co-relation 15231. Up to 2187 conditions per place. [2024-06-28 02:22:57,293 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 131 selfloop transitions, 95 changer transitions 0/234 dead transitions. [2024-06-28 02:22:57,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 234 transitions, 3165 flow [2024-06-28 02:22:57,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:57,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:57,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-28 02:22:57,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6062717770034843 [2024-06-28 02:22:57,294 INFO L175 Difference]: Start difference. First operand has 164 places, 198 transitions, 2327 flow. Second operand 7 states and 174 transitions. [2024-06-28 02:22:57,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 234 transitions, 3165 flow [2024-06-28 02:22:57,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 234 transitions, 2930 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 02:22:57,387 INFO L231 Difference]: Finished difference. Result has 166 places, 215 transitions, 2579 flow [2024-06-28 02:22:57,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2096, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2579, PETRI_PLACES=166, PETRI_TRANSITIONS=215} [2024-06-28 02:22:57,387 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 124 predicate places. [2024-06-28 02:22:57,388 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 215 transitions, 2579 flow [2024-06-28 02:22:57,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:22:57,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:57,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:57,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 02:22:57,388 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:57,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:57,389 INFO L85 PathProgramCache]: Analyzing trace with hash -565126384, now seen corresponding path program 2 times [2024-06-28 02:22:57,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:57,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7301979] [2024-06-28 02:22:57,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:57,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:57,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:57,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:57,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:57,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7301979] [2024-06-28 02:22:57,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7301979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:57,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:57,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:57,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571476261] [2024-06-28 02:22:57,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:57,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:57,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:57,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:57,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:57,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:22:57,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 215 transitions, 2579 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:22:57,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:57,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:22:57,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:57,894 INFO L124 PetriNetUnfolderBase]: 1600/2744 cut-off events. [2024-06-28 02:22:57,894 INFO L125 PetriNetUnfolderBase]: For 80390/80390 co-relation queries the response was YES. [2024-06-28 02:22:57,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16283 conditions, 2744 events. 1600/2744 cut-off events. For 80390/80390 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 16417 event pairs, 348 based on Foata normal form. 2/2744 useless extension candidates. Maximal degree in co-relation 16205. Up to 2415 conditions per place. [2024-06-28 02:22:57,932 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 189 selfloop transitions, 47 changer transitions 0/244 dead transitions. [2024-06-28 02:22:57,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 244 transitions, 3418 flow [2024-06-28 02:22:57,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:57,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:57,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 02:22:57,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.573170731707317 [2024-06-28 02:22:57,936 INFO L175 Difference]: Start difference. First operand has 166 places, 215 transitions, 2579 flow. Second operand 8 states and 188 transitions. [2024-06-28 02:22:57,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 244 transitions, 3418 flow [2024-06-28 02:22:58,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 244 transitions, 3341 flow, removed 36 selfloop flow, removed 1 redundant places. [2024-06-28 02:22:58,053 INFO L231 Difference]: Finished difference. Result has 174 places, 226 transitions, 2802 flow [2024-06-28 02:22:58,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2510, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2802, PETRI_PLACES=174, PETRI_TRANSITIONS=226} [2024-06-28 02:22:58,055 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 132 predicate places. [2024-06-28 02:22:58,055 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 226 transitions, 2802 flow [2024-06-28 02:22:58,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:22:58,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:58,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:58,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 02:22:58,055 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:58,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:58,056 INFO L85 PathProgramCache]: Analyzing trace with hash -965154658, now seen corresponding path program 3 times [2024-06-28 02:22:58,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:58,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521417295] [2024-06-28 02:22:58,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:58,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:58,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:58,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:58,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:58,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521417295] [2024-06-28 02:22:58,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521417295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:58,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:58,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:58,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402369392] [2024-06-28 02:22:58,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:58,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:58,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:58,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:58,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:58,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:22:58,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 226 transitions, 2802 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:22:58,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:58,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:22:58,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:58,614 INFO L124 PetriNetUnfolderBase]: 1626/2789 cut-off events. [2024-06-28 02:22:58,615 INFO L125 PetriNetUnfolderBase]: For 85056/85056 co-relation queries the response was YES. [2024-06-28 02:22:58,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16573 conditions, 2789 events. 1626/2789 cut-off events. For 85056/85056 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 16734 event pairs, 348 based on Foata normal form. 2/2789 useless extension candidates. Maximal degree in co-relation 16491. Up to 2318 conditions per place. [2024-06-28 02:22:58,636 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 159 selfloop transitions, 99 changer transitions 0/266 dead transitions. [2024-06-28 02:22:58,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 266 transitions, 3719 flow [2024-06-28 02:22:58,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:22:58,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:22:58,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-28 02:22:58,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6189024390243902 [2024-06-28 02:22:58,637 INFO L175 Difference]: Start difference. First operand has 174 places, 226 transitions, 2802 flow. Second operand 8 states and 203 transitions. [2024-06-28 02:22:58,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 266 transitions, 3719 flow [2024-06-28 02:22:58,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 266 transitions, 3640 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-06-28 02:22:58,750 INFO L231 Difference]: Finished difference. Result has 181 places, 237 transitions, 3186 flow [2024-06-28 02:22:58,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2723, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3186, PETRI_PLACES=181, PETRI_TRANSITIONS=237} [2024-06-28 02:22:58,751 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 139 predicate places. [2024-06-28 02:22:58,751 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 237 transitions, 3186 flow [2024-06-28 02:22:58,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:22:58,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:58,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:58,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 02:22:58,752 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:58,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:58,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1431170954, now seen corresponding path program 1 times [2024-06-28 02:22:58,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:58,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985250125] [2024-06-28 02:22:58,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:58,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:58,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:58,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:58,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985250125] [2024-06-28 02:22:58,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985250125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:58,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:58,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:58,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519556834] [2024-06-28 02:22:58,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:58,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:58,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:58,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:58,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:58,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:22:58,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 237 transitions, 3186 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:22:58,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:58,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:22:58,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:59,212 INFO L124 PetriNetUnfolderBase]: 1647/2817 cut-off events. [2024-06-28 02:22:59,212 INFO L125 PetriNetUnfolderBase]: For 92467/92470 co-relation queries the response was YES. [2024-06-28 02:22:59,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17485 conditions, 2817 events. 1647/2817 cut-off events. For 92467/92470 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 16929 event pairs, 382 based on Foata normal form. 1/2810 useless extension candidates. Maximal degree in co-relation 17399. Up to 2265 conditions per place. [2024-06-28 02:22:59,236 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 135 selfloop transitions, 126 changer transitions 0/269 dead transitions. [2024-06-28 02:22:59,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 269 transitions, 4190 flow [2024-06-28 02:22:59,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:59,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:59,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 02:22:59,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6167247386759582 [2024-06-28 02:22:59,237 INFO L175 Difference]: Start difference. First operand has 181 places, 237 transitions, 3186 flow. Second operand 7 states and 177 transitions. [2024-06-28 02:22:59,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 269 transitions, 4190 flow [2024-06-28 02:22:59,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 269 transitions, 4093 flow, removed 37 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:59,389 INFO L231 Difference]: Finished difference. Result has 186 places, 246 transitions, 3539 flow [2024-06-28 02:22:59,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3107, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3539, PETRI_PLACES=186, PETRI_TRANSITIONS=246} [2024-06-28 02:22:59,390 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 144 predicate places. [2024-06-28 02:22:59,390 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 246 transitions, 3539 flow [2024-06-28 02:22:59,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:22:59,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:59,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:59,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 02:22:59,391 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:22:59,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:59,391 INFO L85 PathProgramCache]: Analyzing trace with hash -2073802980, now seen corresponding path program 1 times [2024-06-28 02:22:59,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:59,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518724055] [2024-06-28 02:22:59,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:59,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:59,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:59,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:59,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518724055] [2024-06-28 02:22:59,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518724055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:59,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:59,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:22:59,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120566927] [2024-06-28 02:22:59,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:59,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:22:59,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:59,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:22:59,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:22:59,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:22:59,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 246 transitions, 3539 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:22:59,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:59,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:22:59,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:59,962 INFO L124 PetriNetUnfolderBase]: 1652/2827 cut-off events. [2024-06-28 02:22:59,963 INFO L125 PetriNetUnfolderBase]: For 93458/93461 co-relation queries the response was YES. [2024-06-28 02:22:59,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17832 conditions, 2827 events. 1652/2827 cut-off events. For 93458/93461 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 17038 event pairs, 368 based on Foata normal form. 1/2821 useless extension candidates. Maximal degree in co-relation 17744. Up to 2412 conditions per place. [2024-06-28 02:22:59,988 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 196 selfloop transitions, 67 changer transitions 0/271 dead transitions. [2024-06-28 02:22:59,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 271 transitions, 4326 flow [2024-06-28 02:22:59,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:22:59,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:22:59,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 02:22:59,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6027874564459931 [2024-06-28 02:22:59,990 INFO L175 Difference]: Start difference. First operand has 186 places, 246 transitions, 3539 flow. Second operand 7 states and 173 transitions. [2024-06-28 02:22:59,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 271 transitions, 4326 flow [2024-06-28 02:23:00,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 271 transitions, 4116 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-28 02:23:00,165 INFO L231 Difference]: Finished difference. Result has 190 places, 249 transitions, 3516 flow [2024-06-28 02:23:00,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3333, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3516, PETRI_PLACES=190, PETRI_TRANSITIONS=249} [2024-06-28 02:23:00,166 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 148 predicate places. [2024-06-28 02:23:00,166 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 249 transitions, 3516 flow [2024-06-28 02:23:00,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:00,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:00,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:00,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 02:23:00,167 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:00,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:00,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1571442716, now seen corresponding path program 2 times [2024-06-28 02:23:00,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:00,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618989293] [2024-06-28 02:23:00,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:00,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:00,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:00,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:00,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618989293] [2024-06-28 02:23:00,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618989293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:00,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:00,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:00,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141252664] [2024-06-28 02:23:00,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:00,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:00,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:00,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:00,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:00,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:00,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 249 transitions, 3516 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:00,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:00,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:00,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:00,698 INFO L124 PetriNetUnfolderBase]: 1665/2842 cut-off events. [2024-06-28 02:23:00,699 INFO L125 PetriNetUnfolderBase]: For 98636/98639 co-relation queries the response was YES. [2024-06-28 02:23:00,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17966 conditions, 2842 events. 1665/2842 cut-off events. For 98636/98639 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 17023 event pairs, 383 based on Foata normal form. 1/2835 useless extension candidates. Maximal degree in co-relation 17877. Up to 2282 conditions per place. [2024-06-28 02:23:00,728 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 136 selfloop transitions, 132 changer transitions 0/276 dead transitions. [2024-06-28 02:23:00,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 276 transitions, 4540 flow [2024-06-28 02:23:00,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:23:00,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:23:00,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 02:23:00,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6167247386759582 [2024-06-28 02:23:00,729 INFO L175 Difference]: Start difference. First operand has 190 places, 249 transitions, 3516 flow. Second operand 7 states and 177 transitions. [2024-06-28 02:23:00,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 276 transitions, 4540 flow [2024-06-28 02:23:00,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 276 transitions, 4388 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 02:23:00,909 INFO L231 Difference]: Finished difference. Result has 192 places, 255 transitions, 3744 flow [2024-06-28 02:23:00,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3364, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3744, PETRI_PLACES=192, PETRI_TRANSITIONS=255} [2024-06-28 02:23:00,910 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 150 predicate places. [2024-06-28 02:23:00,910 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 255 transitions, 3744 flow [2024-06-28 02:23:00,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:00,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:00,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:00,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 02:23:00,911 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:00,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:00,911 INFO L85 PathProgramCache]: Analyzing trace with hash -877693156, now seen corresponding path program 2 times [2024-06-28 02:23:00,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:00,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170994124] [2024-06-28 02:23:00,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:00,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:01,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:01,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:01,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170994124] [2024-06-28 02:23:01,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170994124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:01,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:01,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:01,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678873361] [2024-06-28 02:23:01,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:01,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:01,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:01,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:01,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:01,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:01,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 255 transitions, 3744 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:01,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:01,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:01,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:01,436 INFO L124 PetriNetUnfolderBase]: 1670/2855 cut-off events. [2024-06-28 02:23:01,436 INFO L125 PetriNetUnfolderBase]: For 103636/103639 co-relation queries the response was YES. [2024-06-28 02:23:01,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18300 conditions, 2855 events. 1670/2855 cut-off events. For 103636/103639 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 17165 event pairs, 367 based on Foata normal form. 1/2850 useless extension candidates. Maximal degree in co-relation 18210. Up to 2436 conditions per place. [2024-06-28 02:23:01,461 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 200 selfloop transitions, 70 changer transitions 0/278 dead transitions. [2024-06-28 02:23:01,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 278 transitions, 4547 flow [2024-06-28 02:23:01,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:23:01,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:23:01,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-28 02:23:01,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5792682926829268 [2024-06-28 02:23:01,463 INFO L175 Difference]: Start difference. First operand has 192 places, 255 transitions, 3744 flow. Second operand 8 states and 190 transitions. [2024-06-28 02:23:01,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 278 transitions, 4547 flow [2024-06-28 02:23:01,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 278 transitions, 4277 flow, removed 43 selfloop flow, removed 3 redundant places. [2024-06-28 02:23:01,663 INFO L231 Difference]: Finished difference. Result has 197 places, 258 transitions, 3667 flow [2024-06-28 02:23:01,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3478, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3667, PETRI_PLACES=197, PETRI_TRANSITIONS=258} [2024-06-28 02:23:01,663 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 155 predicate places. [2024-06-28 02:23:01,663 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 258 transitions, 3667 flow [2024-06-28 02:23:01,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:01,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:01,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:01,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 02:23:01,664 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:01,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:01,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1571205566, now seen corresponding path program 3 times [2024-06-28 02:23:01,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:01,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262546047] [2024-06-28 02:23:01,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:01,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:01,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:01,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:01,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262546047] [2024-06-28 02:23:01,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262546047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:01,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:01,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:01,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660653898] [2024-06-28 02:23:01,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:01,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:01,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:01,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:01,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:01,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:01,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 258 transitions, 3667 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:01,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:01,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:01,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:02,162 INFO L124 PetriNetUnfolderBase]: 1667/2850 cut-off events. [2024-06-28 02:23:02,162 INFO L125 PetriNetUnfolderBase]: For 106488/106491 co-relation queries the response was YES. [2024-06-28 02:23:02,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18054 conditions, 2850 events. 1667/2850 cut-off events. For 106488/106491 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 17152 event pairs, 385 based on Foata normal form. 1/2842 useless extension candidates. Maximal degree in co-relation 17964. Up to 2284 conditions per place. [2024-06-28 02:23:02,188 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 134 selfloop transitions, 136 changer transitions 0/278 dead transitions. [2024-06-28 02:23:02,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 278 transitions, 4513 flow [2024-06-28 02:23:02,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:23:02,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:23:02,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 02:23:02,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6132404181184669 [2024-06-28 02:23:02,190 INFO L175 Difference]: Start difference. First operand has 197 places, 258 transitions, 3667 flow. Second operand 7 states and 176 transitions. [2024-06-28 02:23:02,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 278 transitions, 4513 flow [2024-06-28 02:23:02,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 278 transitions, 4369 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-28 02:23:02,381 INFO L231 Difference]: Finished difference. Result has 200 places, 258 transitions, 3801 flow [2024-06-28 02:23:02,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3523, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3801, PETRI_PLACES=200, PETRI_TRANSITIONS=258} [2024-06-28 02:23:02,382 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 158 predicate places. [2024-06-28 02:23:02,382 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 258 transitions, 3801 flow [2024-06-28 02:23:02,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:02,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:02,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:02,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 02:23:02,383 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:02,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:02,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1571196638, now seen corresponding path program 1 times [2024-06-28 02:23:02,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:02,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450688372] [2024-06-28 02:23:02,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:02,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:02,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:02,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:02,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450688372] [2024-06-28 02:23:02,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450688372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:02,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:02,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:02,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464854710] [2024-06-28 02:23:02,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:02,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:02,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:02,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:02,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:02,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-06-28 02:23:02,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 258 transitions, 3801 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 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) [2024-06-28 02:23:02,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:02,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-06-28 02:23:02,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:02,906 INFO L124 PetriNetUnfolderBase]: 1619/2802 cut-off events. [2024-06-28 02:23:02,906 INFO L125 PetriNetUnfolderBase]: For 119204/119204 co-relation queries the response was YES. [2024-06-28 02:23:02,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18075 conditions, 2802 events. 1619/2802 cut-off events. For 119204/119204 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 16979 event pairs, 339 based on Foata normal form. 10/2786 useless extension candidates. Maximal degree in co-relation 17983. Up to 2275 conditions per place. [2024-06-28 02:23:02,932 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 190 selfloop transitions, 37 changer transitions 0/280 dead transitions. [2024-06-28 02:23:02,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 280 transitions, 4339 flow [2024-06-28 02:23:02,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:23:02,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:23:02,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 02:23:02,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5993031358885017 [2024-06-28 02:23:02,933 INFO L175 Difference]: Start difference. First operand has 200 places, 258 transitions, 3801 flow. Second operand 7 states and 172 transitions. [2024-06-28 02:23:02,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 280 transitions, 4339 flow [2024-06-28 02:23:03,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 280 transitions, 4068 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 02:23:03,143 INFO L231 Difference]: Finished difference. Result has 202 places, 259 transitions, 3626 flow [2024-06-28 02:23:03,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3530, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3626, PETRI_PLACES=202, PETRI_TRANSITIONS=259} [2024-06-28 02:23:03,143 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 160 predicate places. [2024-06-28 02:23:03,143 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 259 transitions, 3626 flow [2024-06-28 02:23:03,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 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) [2024-06-28 02:23:03,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:03,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:03,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 02:23:03,144 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:03,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:03,144 INFO L85 PathProgramCache]: Analyzing trace with hash -343530978, now seen corresponding path program 3 times [2024-06-28 02:23:03,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:03,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065034564] [2024-06-28 02:23:03,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:03,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:03,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:03,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:03,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065034564] [2024-06-28 02:23:03,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065034564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:03,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:03,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:03,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201594422] [2024-06-28 02:23:03,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:03,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:03,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:03,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:03,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:03,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:03,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 259 transitions, 3626 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:03,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:03,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:03,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:03,635 INFO L124 PetriNetUnfolderBase]: 1700/2905 cut-off events. [2024-06-28 02:23:03,635 INFO L125 PetriNetUnfolderBase]: For 113903/113903 co-relation queries the response was YES. [2024-06-28 02:23:03,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18395 conditions, 2905 events. 1700/2905 cut-off events. For 113903/113903 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 17518 event pairs, 364 based on Foata normal form. 1/2901 useless extension candidates. Maximal degree in co-relation 18302. Up to 2485 conditions per place. [2024-06-28 02:23:03,662 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 199 selfloop transitions, 70 changer transitions 0/277 dead transitions. [2024-06-28 02:23:03,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 277 transitions, 4298 flow [2024-06-28 02:23:03,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:23:03,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:23:03,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 02:23:03,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5888501742160279 [2024-06-28 02:23:03,664 INFO L175 Difference]: Start difference. First operand has 202 places, 259 transitions, 3626 flow. Second operand 7 states and 169 transitions. [2024-06-28 02:23:03,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 277 transitions, 4298 flow [2024-06-28 02:23:03,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 277 transitions, 4218 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 02:23:03,871 INFO L231 Difference]: Finished difference. Result has 204 places, 259 transitions, 3692 flow [2024-06-28 02:23:03,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3546, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3692, PETRI_PLACES=204, PETRI_TRANSITIONS=259} [2024-06-28 02:23:03,872 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 162 predicate places. [2024-06-28 02:23:03,872 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 259 transitions, 3692 flow [2024-06-28 02:23:03,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:03,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:03,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:03,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 02:23:03,873 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:03,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:03,873 INFO L85 PathProgramCache]: Analyzing trace with hash -383159096, now seen corresponding path program 4 times [2024-06-28 02:23:03,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:03,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081480677] [2024-06-28 02:23:03,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:03,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:03,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:03,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:03,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081480677] [2024-06-28 02:23:03,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081480677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:03,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:03,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:03,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028440839] [2024-06-28 02:23:03,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:03,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:03,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:03,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:03,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:03,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:03,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 259 transitions, 3692 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:03,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:03,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:03,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:04,341 INFO L124 PetriNetUnfolderBase]: 1694/2895 cut-off events. [2024-06-28 02:23:04,342 INFO L125 PetriNetUnfolderBase]: For 117606/117606 co-relation queries the response was YES. [2024-06-28 02:23:04,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18427 conditions, 2895 events. 1694/2895 cut-off events. For 117606/117606 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 17451 event pairs, 363 based on Foata normal form. 2/2892 useless extension candidates. Maximal degree in co-relation 18333. Up to 2333 conditions per place. [2024-06-28 02:23:04,369 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 143 selfloop transitions, 127 changer transitions 0/278 dead transitions. [2024-06-28 02:23:04,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 278 transitions, 4462 flow [2024-06-28 02:23:04,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:23:04,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:23:04,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-28 02:23:04,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6062717770034843 [2024-06-28 02:23:04,371 INFO L175 Difference]: Start difference. First operand has 204 places, 259 transitions, 3692 flow. Second operand 7 states and 174 transitions. [2024-06-28 02:23:04,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 278 transitions, 4462 flow [2024-06-28 02:23:04,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 278 transitions, 4290 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 02:23:04,623 INFO L231 Difference]: Finished difference. Result has 206 places, 259 transitions, 3781 flow [2024-06-28 02:23:04,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3520, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3781, PETRI_PLACES=206, PETRI_TRANSITIONS=259} [2024-06-28 02:23:04,624 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 164 predicate places. [2024-06-28 02:23:04,624 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 259 transitions, 3781 flow [2024-06-28 02:23:04,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:04,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:04,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:04,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 02:23:04,625 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:04,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:04,625 INFO L85 PathProgramCache]: Analyzing trace with hash -723114198, now seen corresponding path program 4 times [2024-06-28 02:23:04,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:04,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612165864] [2024-06-28 02:23:04,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:04,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:04,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:04,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:04,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:04,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612165864] [2024-06-28 02:23:04,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612165864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:04,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:04,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:04,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363332560] [2024-06-28 02:23:04,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:04,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:04,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:04,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:04,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:04,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:04,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 259 transitions, 3781 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:04,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:04,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:04,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:05,159 INFO L124 PetriNetUnfolderBase]: 1691/2893 cut-off events. [2024-06-28 02:23:05,159 INFO L125 PetriNetUnfolderBase]: For 120378/120378 co-relation queries the response was YES. [2024-06-28 02:23:05,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18585 conditions, 2893 events. 1691/2893 cut-off events. For 120378/120378 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 17454 event pairs, 364 based on Foata normal form. 1/2889 useless extension candidates. Maximal degree in co-relation 18490. Up to 2474 conditions per place. [2024-06-28 02:23:05,186 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 202 selfloop transitions, 66 changer transitions 0/276 dead transitions. [2024-06-28 02:23:05,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 276 transitions, 4359 flow [2024-06-28 02:23:05,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:23:05,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:23:05,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-28 02:23:05,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5853658536585366 [2024-06-28 02:23:05,188 INFO L175 Difference]: Start difference. First operand has 206 places, 259 transitions, 3781 flow. Second operand 7 states and 168 transitions. [2024-06-28 02:23:05,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 276 transitions, 4359 flow [2024-06-28 02:23:05,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 276 transitions, 3992 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 02:23:05,423 INFO L231 Difference]: Finished difference. Result has 207 places, 259 transitions, 3552 flow [2024-06-28 02:23:05,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3414, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3552, PETRI_PLACES=207, PETRI_TRANSITIONS=259} [2024-06-28 02:23:05,424 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 165 predicate places. [2024-06-28 02:23:05,424 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 259 transitions, 3552 flow [2024-06-28 02:23:05,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:05,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:05,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:05,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 02:23:05,424 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:05,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:05,425 INFO L85 PathProgramCache]: Analyzing trace with hash 625864, now seen corresponding path program 5 times [2024-06-28 02:23:05,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:05,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024772289] [2024-06-28 02:23:05,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:05,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:05,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:05,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:05,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:05,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024772289] [2024-06-28 02:23:05,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024772289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:05,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:05,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:05,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236784538] [2024-06-28 02:23:05,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:05,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:05,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:05,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:05,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:05,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:05,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 259 transitions, 3552 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:05,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:05,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:05,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:06,018 INFO L124 PetriNetUnfolderBase]: 1693/2903 cut-off events. [2024-06-28 02:23:06,019 INFO L125 PetriNetUnfolderBase]: For 122096/122096 co-relation queries the response was YES. [2024-06-28 02:23:06,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18434 conditions, 2903 events. 1693/2903 cut-off events. For 122096/122096 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 17531 event pairs, 355 based on Foata normal form. 2/2903 useless extension candidates. Maximal degree in co-relation 18338. Up to 2552 conditions per place. [2024-06-28 02:23:06,044 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 222 selfloop transitions, 50 changer transitions 0/280 dead transitions. [2024-06-28 02:23:06,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 280 transitions, 4397 flow [2024-06-28 02:23:06,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:23:06,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:23:06,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 02:23:06,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.573170731707317 [2024-06-28 02:23:06,045 INFO L175 Difference]: Start difference. First operand has 207 places, 259 transitions, 3552 flow. Second operand 8 states and 188 transitions. [2024-06-28 02:23:06,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 280 transitions, 4397 flow [2024-06-28 02:23:06,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 280 transitions, 4218 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 02:23:06,292 INFO L231 Difference]: Finished difference. Result has 208 places, 262 transitions, 3541 flow [2024-06-28 02:23:06,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3376, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3541, PETRI_PLACES=208, PETRI_TRANSITIONS=262} [2024-06-28 02:23:06,292 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 166 predicate places. [2024-06-28 02:23:06,292 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 262 transitions, 3541 flow [2024-06-28 02:23:06,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:06,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:06,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:06,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 02:23:06,293 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:06,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:06,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1701457736, now seen corresponding path program 6 times [2024-06-28 02:23:06,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:06,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890846667] [2024-06-28 02:23:06,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:06,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:06,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:06,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:06,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890846667] [2024-06-28 02:23:06,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890846667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:06,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:06,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:06,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286958121] [2024-06-28 02:23:06,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:06,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:06,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:06,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:06,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:06,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:06,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 262 transitions, 3541 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:06,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:06,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:06,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:06,812 INFO L124 PetriNetUnfolderBase]: 1695/2902 cut-off events. [2024-06-28 02:23:06,813 INFO L125 PetriNetUnfolderBase]: For 124665/124665 co-relation queries the response was YES. [2024-06-28 02:23:06,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18430 conditions, 2902 events. 1695/2902 cut-off events. For 124665/124665 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 17521 event pairs, 351 based on Foata normal form. 2/2902 useless extension candidates. Maximal degree in co-relation 18334. Up to 2418 conditions per place. [2024-06-28 02:23:06,841 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 182 selfloop transitions, 104 changer transitions 0/294 dead transitions. [2024-06-28 02:23:06,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 294 transitions, 4442 flow [2024-06-28 02:23:06,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:23:06,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:23:06,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-28 02:23:06,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6219512195121951 [2024-06-28 02:23:06,843 INFO L175 Difference]: Start difference. First operand has 208 places, 262 transitions, 3541 flow. Second operand 8 states and 204 transitions. [2024-06-28 02:23:06,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 294 transitions, 4442 flow [2024-06-28 02:23:07,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 294 transitions, 4310 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 02:23:07,216 INFO L231 Difference]: Finished difference. Result has 210 places, 265 transitions, 3690 flow [2024-06-28 02:23:07,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3409, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3690, PETRI_PLACES=210, PETRI_TRANSITIONS=265} [2024-06-28 02:23:07,216 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 168 predicate places. [2024-06-28 02:23:07,217 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 265 transitions, 3690 flow [2024-06-28 02:23:07,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:07,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:07,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:07,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 02:23:07,217 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:07,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:07,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1778874362, now seen corresponding path program 7 times [2024-06-28 02:23:07,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:07,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224271756] [2024-06-28 02:23:07,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:07,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:07,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:07,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:07,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224271756] [2024-06-28 02:23:07,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224271756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:07,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:07,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:07,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265474315] [2024-06-28 02:23:07,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:07,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:07,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:07,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:07,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:07,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:07,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 265 transitions, 3690 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:07,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:07,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:07,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:07,747 INFO L124 PetriNetUnfolderBase]: 1700/2918 cut-off events. [2024-06-28 02:23:07,748 INFO L125 PetriNetUnfolderBase]: For 128847/128850 co-relation queries the response was YES. [2024-06-28 02:23:07,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18765 conditions, 2918 events. 1700/2918 cut-off events. For 128847/128850 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 17678 event pairs, 362 based on Foata normal form. 3/2918 useless extension candidates. Maximal degree in co-relation 18668. Up to 2422 conditions per place. [2024-06-28 02:23:07,776 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 176 selfloop transitions, 107 changer transitions 0/291 dead transitions. [2024-06-28 02:23:07,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 291 transitions, 4674 flow [2024-06-28 02:23:07,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:23:07,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:23:07,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-28 02:23:07,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6202090592334495 [2024-06-28 02:23:07,777 INFO L175 Difference]: Start difference. First operand has 210 places, 265 transitions, 3690 flow. Second operand 7 states and 178 transitions. [2024-06-28 02:23:07,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 291 transitions, 4674 flow [2024-06-28 02:23:08,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 291 transitions, 4512 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-28 02:23:08,036 INFO L231 Difference]: Finished difference. Result has 212 places, 268 transitions, 3816 flow [2024-06-28 02:23:08,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3536, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3816, PETRI_PLACES=212, PETRI_TRANSITIONS=268} [2024-06-28 02:23:08,037 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 170 predicate places. [2024-06-28 02:23:08,037 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 268 transitions, 3816 flow [2024-06-28 02:23:08,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:08,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:08,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:08,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 02:23:08,037 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:08,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:08,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1774948990, now seen corresponding path program 8 times [2024-06-28 02:23:08,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:08,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315653697] [2024-06-28 02:23:08,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:08,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:08,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:08,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:08,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:08,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315653697] [2024-06-28 02:23:08,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315653697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:08,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:08,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:08,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301474882] [2024-06-28 02:23:08,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:08,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:08,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:08,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:08,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:08,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:08,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 268 transitions, 3816 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:08,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:08,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:08,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:08,532 INFO L124 PetriNetUnfolderBase]: 1697/2910 cut-off events. [2024-06-28 02:23:08,532 INFO L125 PetriNetUnfolderBase]: For 128541/128544 co-relation queries the response was YES. [2024-06-28 02:23:08,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18682 conditions, 2910 events. 1697/2910 cut-off events. For 128541/128544 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 17626 event pairs, 358 based on Foata normal form. 3/2910 useless extension candidates. Maximal degree in co-relation 18585. Up to 2420 conditions per place. [2024-06-28 02:23:08,560 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 178 selfloop transitions, 107 changer transitions 0/293 dead transitions. [2024-06-28 02:23:08,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 293 transitions, 4648 flow [2024-06-28 02:23:08,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:23:08,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:23:08,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-28 02:23:08,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.627177700348432 [2024-06-28 02:23:08,561 INFO L175 Difference]: Start difference. First operand has 212 places, 268 transitions, 3816 flow. Second operand 7 states and 180 transitions. [2024-06-28 02:23:08,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 293 transitions, 4648 flow [2024-06-28 02:23:08,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 293 transitions, 4340 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-28 02:23:08,832 INFO L231 Difference]: Finished difference. Result has 214 places, 268 transitions, 3728 flow [2024-06-28 02:23:08,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3508, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3728, PETRI_PLACES=214, PETRI_TRANSITIONS=268} [2024-06-28 02:23:08,832 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 172 predicate places. [2024-06-28 02:23:08,832 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 268 transitions, 3728 flow [2024-06-28 02:23:08,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:08,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:08,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:08,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 02:23:08,833 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:08,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:08,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1936834956, now seen corresponding path program 2 times [2024-06-28 02:23:08,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:08,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028821036] [2024-06-28 02:23:08,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:08,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:08,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:08,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:08,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:08,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028821036] [2024-06-28 02:23:08,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028821036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:08,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:08,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:08,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335302203] [2024-06-28 02:23:08,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:08,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:08,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:08,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:08,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:08,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-06-28 02:23:08,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 268 transitions, 3728 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 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) [2024-06-28 02:23:08,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:08,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-06-28 02:23:08,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:09,346 INFO L124 PetriNetUnfolderBase]: 1647/2855 cut-off events. [2024-06-28 02:23:09,347 INFO L125 PetriNetUnfolderBase]: For 143898/143898 co-relation queries the response was YES. [2024-06-28 02:23:09,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18364 conditions, 2855 events. 1647/2855 cut-off events. For 143898/143898 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 17452 event pairs, 341 based on Foata normal form. 10/2839 useless extension candidates. Maximal degree in co-relation 18267. Up to 2333 conditions per place. [2024-06-28 02:23:09,373 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 204 selfloop transitions, 29 changer transitions 0/289 dead transitions. [2024-06-28 02:23:09,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 289 transitions, 4278 flow [2024-06-28 02:23:09,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:23:09,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:23:09,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-28 02:23:09,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6178861788617886 [2024-06-28 02:23:09,374 INFO L175 Difference]: Start difference. First operand has 214 places, 268 transitions, 3728 flow. Second operand 6 states and 152 transitions. [2024-06-28 02:23:09,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 289 transitions, 4278 flow [2024-06-28 02:23:09,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 289 transitions, 3921 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:09,626 INFO L231 Difference]: Finished difference. Result has 212 places, 269 transitions, 3453 flow [2024-06-28 02:23:09,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3371, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3453, PETRI_PLACES=212, PETRI_TRANSITIONS=269} [2024-06-28 02:23:09,628 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 170 predicate places. [2024-06-28 02:23:09,628 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 269 transitions, 3453 flow [2024-06-28 02:23:09,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 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) [2024-06-28 02:23:09,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:09,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:09,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 02:23:09,629 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:09,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:09,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1924322736, now seen corresponding path program 3 times [2024-06-28 02:23:09,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:09,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664463194] [2024-06-28 02:23:09,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:09,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:09,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:09,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:09,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:09,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664463194] [2024-06-28 02:23:09,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664463194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:09,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:09,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:09,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184754130] [2024-06-28 02:23:09,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:09,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:09,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:09,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:09,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:09,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-06-28 02:23:09,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 269 transitions, 3453 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 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) [2024-06-28 02:23:09,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:09,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-06-28 02:23:09,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:10,246 INFO L124 PetriNetUnfolderBase]: 1684/2921 cut-off events. [2024-06-28 02:23:10,246 INFO L125 PetriNetUnfolderBase]: For 150695/150695 co-relation queries the response was YES. [2024-06-28 02:23:10,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18546 conditions, 2921 events. 1684/2921 cut-off events. For 150695/150695 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 17988 event pairs, 267 based on Foata normal form. 11/2907 useless extension candidates. Maximal degree in co-relation 18448. Up to 2363 conditions per place. [2024-06-28 02:23:10,271 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 210 selfloop transitions, 27 changer transitions 0/293 dead transitions. [2024-06-28 02:23:10,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 293 transitions, 4025 flow [2024-06-28 02:23:10,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:23:10,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:23:10,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2024-06-28 02:23:10,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6682926829268293 [2024-06-28 02:23:10,272 INFO L175 Difference]: Start difference. First operand has 212 places, 269 transitions, 3453 flow. Second operand 5 states and 137 transitions. [2024-06-28 02:23:10,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 293 transitions, 4025 flow [2024-06-28 02:23:10,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 293 transitions, 3965 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 02:23:10,522 INFO L231 Difference]: Finished difference. Result has 213 places, 271 transitions, 3486 flow [2024-06-28 02:23:10,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3393, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3486, PETRI_PLACES=213, PETRI_TRANSITIONS=271} [2024-06-28 02:23:10,523 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 171 predicate places. [2024-06-28 02:23:10,523 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 271 transitions, 3486 flow [2024-06-28 02:23:10,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 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) [2024-06-28 02:23:10,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:10,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:10,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 02:23:10,524 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:10,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:10,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1331369122, now seen corresponding path program 4 times [2024-06-28 02:23:10,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:10,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921918057] [2024-06-28 02:23:10,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:10,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:10,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:10,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:10,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921918057] [2024-06-28 02:23:10,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921918057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:10,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:10,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:10,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554383388] [2024-06-28 02:23:10,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:10,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:10,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:10,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:10,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:10,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-06-28 02:23:10,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 271 transitions, 3486 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 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) [2024-06-28 02:23:10,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:10,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-06-28 02:23:10,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:11,097 INFO L124 PetriNetUnfolderBase]: 1686/2927 cut-off events. [2024-06-28 02:23:11,097 INFO L125 PetriNetUnfolderBase]: For 144031/144031 co-relation queries the response was YES. [2024-06-28 02:23:11,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18531 conditions, 2927 events. 1686/2927 cut-off events. For 144031/144031 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 18030 event pairs, 261 based on Foata normal form. 8/2910 useless extension candidates. Maximal degree in co-relation 18432. Up to 2341 conditions per place. [2024-06-28 02:23:11,128 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 212 selfloop transitions, 30 changer transitions 0/298 dead transitions. [2024-06-28 02:23:11,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 298 transitions, 4082 flow [2024-06-28 02:23:11,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:23:11,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:23:11,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-06-28 02:23:11,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6463414634146342 [2024-06-28 02:23:11,129 INFO L175 Difference]: Start difference. First operand has 213 places, 271 transitions, 3486 flow. Second operand 6 states and 159 transitions. [2024-06-28 02:23:11,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 298 transitions, 4082 flow [2024-06-28 02:23:11,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 298 transitions, 4025 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 02:23:11,426 INFO L231 Difference]: Finished difference. Result has 216 places, 272 transitions, 3515 flow [2024-06-28 02:23:11,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3431, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3515, PETRI_PLACES=216, PETRI_TRANSITIONS=272} [2024-06-28 02:23:11,427 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 174 predicate places. [2024-06-28 02:23:11,427 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 272 transitions, 3515 flow [2024-06-28 02:23:11,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 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) [2024-06-28 02:23:11,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:11,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:11,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 02:23:11,428 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:11,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:11,428 INFO L85 PathProgramCache]: Analyzing trace with hash -117245622, now seen corresponding path program 1 times [2024-06-28 02:23:11,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:11,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356506145] [2024-06-28 02:23:11,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:11,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:11,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:11,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:11,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356506145] [2024-06-28 02:23:11,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356506145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:11,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:11,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:11,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154878730] [2024-06-28 02:23:11,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:11,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:11,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:11,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:11,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:11,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:11,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 272 transitions, 3515 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:11,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:11,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:11,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:11,969 INFO L124 PetriNetUnfolderBase]: 1808/3090 cut-off events. [2024-06-28 02:23:11,969 INFO L125 PetriNetUnfolderBase]: For 143066/143066 co-relation queries the response was YES. [2024-06-28 02:23:11,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19454 conditions, 3090 events. 1808/3090 cut-off events. For 143066/143066 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 18911 event pairs, 316 based on Foata normal form. 4/3089 useless extension candidates. Maximal degree in co-relation 19354. Up to 2572 conditions per place. [2024-06-28 02:23:12,002 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 215 selfloop transitions, 78 changer transitions 0/301 dead transitions. [2024-06-28 02:23:12,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 301 transitions, 4339 flow [2024-06-28 02:23:12,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:23:12,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:23:12,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-28 02:23:12,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6062717770034843 [2024-06-28 02:23:12,003 INFO L175 Difference]: Start difference. First operand has 216 places, 272 transitions, 3515 flow. Second operand 7 states and 174 transitions. [2024-06-28 02:23:12,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 301 transitions, 4339 flow [2024-06-28 02:23:12,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 301 transitions, 4271 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 02:23:12,278 INFO L231 Difference]: Finished difference. Result has 219 places, 278 transitions, 3691 flow [2024-06-28 02:23:12,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3447, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3691, PETRI_PLACES=219, PETRI_TRANSITIONS=278} [2024-06-28 02:23:12,278 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 177 predicate places. [2024-06-28 02:23:12,278 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 278 transitions, 3691 flow [2024-06-28 02:23:12,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:12,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:12,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:12,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 02:23:12,279 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:12,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:12,279 INFO L85 PathProgramCache]: Analyzing trace with hash -114388662, now seen corresponding path program 2 times [2024-06-28 02:23:12,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:12,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319343097] [2024-06-28 02:23:12,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:12,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:12,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:12,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:12,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319343097] [2024-06-28 02:23:12,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319343097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:12,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:12,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:12,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930371803] [2024-06-28 02:23:12,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:12,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:12,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:12,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:12,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:12,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:12,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 278 transitions, 3691 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:12,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:12,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:12,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:12,876 INFO L124 PetriNetUnfolderBase]: 1824/3107 cut-off events. [2024-06-28 02:23:12,876 INFO L125 PetriNetUnfolderBase]: For 148832/148832 co-relation queries the response was YES. [2024-06-28 02:23:12,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19894 conditions, 3107 events. 1824/3107 cut-off events. For 148832/148832 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 18976 event pairs, 373 based on Foata normal form. 4/3106 useless extension candidates. Maximal degree in co-relation 19793. Up to 2668 conditions per place. [2024-06-28 02:23:12,912 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 218 selfloop transitions, 73 changer transitions 0/299 dead transitions. [2024-06-28 02:23:12,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 299 transitions, 4361 flow [2024-06-28 02:23:12,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:23:12,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:23:12,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 02:23:12,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5888501742160279 [2024-06-28 02:23:12,914 INFO L175 Difference]: Start difference. First operand has 219 places, 278 transitions, 3691 flow. Second operand 7 states and 169 transitions. [2024-06-28 02:23:12,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 299 transitions, 4361 flow [2024-06-28 02:23:13,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 299 transitions, 4224 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-06-28 02:23:13,230 INFO L231 Difference]: Finished difference. Result has 224 places, 281 transitions, 3756 flow [2024-06-28 02:23:13,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3568, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3756, PETRI_PLACES=224, PETRI_TRANSITIONS=281} [2024-06-28 02:23:13,240 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 182 predicate places. [2024-06-28 02:23:13,240 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 281 transitions, 3756 flow [2024-06-28 02:23:13,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:13,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:13,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:13,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 02:23:13,241 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:13,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:13,241 INFO L85 PathProgramCache]: Analyzing trace with hash 902508, now seen corresponding path program 3 times [2024-06-28 02:23:13,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:13,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371261759] [2024-06-28 02:23:13,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:13,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:13,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:13,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:13,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:13,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371261759] [2024-06-28 02:23:13,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371261759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:13,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:13,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:13,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201092486] [2024-06-28 02:23:13,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:13,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:13,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:13,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:13,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:13,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:13,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 281 transitions, 3756 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:13,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:13,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:13,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:13,905 INFO L124 PetriNetUnfolderBase]: 1896/3226 cut-off events. [2024-06-28 02:23:13,905 INFO L125 PetriNetUnfolderBase]: For 179038/179038 co-relation queries the response was YES. [2024-06-28 02:23:13,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20647 conditions, 3226 events. 1896/3226 cut-off events. For 179038/179038 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 19782 event pairs, 373 based on Foata normal form. 20/3244 useless extension candidates. Maximal degree in co-relation 20543. Up to 2811 conditions per place. [2024-06-28 02:23:13,938 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 256 selfloop transitions, 42 changer transitions 0/306 dead transitions. [2024-06-28 02:23:13,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 306 transitions, 4495 flow [2024-06-28 02:23:13,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:23:13,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:23:13,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-28 02:23:13,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5762195121951219 [2024-06-28 02:23:13,939 INFO L175 Difference]: Start difference. First operand has 224 places, 281 transitions, 3756 flow. Second operand 8 states and 189 transitions. [2024-06-28 02:23:13,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 306 transitions, 4495 flow [2024-06-28 02:23:14,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 306 transitions, 4333 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 02:23:14,279 INFO L231 Difference]: Finished difference. Result has 227 places, 286 transitions, 3770 flow [2024-06-28 02:23:14,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3596, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3770, PETRI_PLACES=227, PETRI_TRANSITIONS=286} [2024-06-28 02:23:14,280 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 185 predicate places. [2024-06-28 02:23:14,280 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 286 transitions, 3770 flow [2024-06-28 02:23:14,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:14,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:14,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:14,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 02:23:14,281 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:14,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:14,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1087206, now seen corresponding path program 1 times [2024-06-28 02:23:14,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:14,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400282595] [2024-06-28 02:23:14,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:14,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:14,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:14,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:14,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400282595] [2024-06-28 02:23:14,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400282595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:14,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:14,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:14,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661352497] [2024-06-28 02:23:14,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:14,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:14,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:14,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:14,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:14,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:14,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 286 transitions, 3770 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:14,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:14,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:14,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:14,831 INFO L124 PetriNetUnfolderBase]: 1904/3236 cut-off events. [2024-06-28 02:23:14,831 INFO L125 PetriNetUnfolderBase]: For 156869/156869 co-relation queries the response was YES. [2024-06-28 02:23:14,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20860 conditions, 3236 events. 1904/3236 cut-off events. For 156869/156869 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 19791 event pairs, 373 based on Foata normal form. 2/3236 useless extension candidates. Maximal degree in co-relation 20755. Up to 2917 conditions per place. [2024-06-28 02:23:14,865 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 272 selfloop transitions, 24 changer transitions 0/304 dead transitions. [2024-06-28 02:23:14,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 304 transitions, 4443 flow [2024-06-28 02:23:14,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:23:14,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:23:14,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-06-28 02:23:14,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5609756097560976 [2024-06-28 02:23:14,866 INFO L175 Difference]: Start difference. First operand has 227 places, 286 transitions, 3770 flow. Second operand 7 states and 161 transitions. [2024-06-28 02:23:14,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 304 transitions, 4443 flow [2024-06-28 02:23:15,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 304 transitions, 4335 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 02:23:15,250 INFO L231 Difference]: Finished difference. Result has 229 places, 289 transitions, 3770 flow [2024-06-28 02:23:15,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3662, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3770, PETRI_PLACES=229, PETRI_TRANSITIONS=289} [2024-06-28 02:23:15,250 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 187 predicate places. [2024-06-28 02:23:15,251 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 289 transitions, 3770 flow [2024-06-28 02:23:15,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:15,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:15,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:15,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 02:23:15,251 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:15,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:15,252 INFO L85 PathProgramCache]: Analyzing trace with hash 144972986, now seen corresponding path program 4 times [2024-06-28 02:23:15,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:15,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132218254] [2024-06-28 02:23:15,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:15,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:15,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:15,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:15,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132218254] [2024-06-28 02:23:15,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132218254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:15,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:15,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:15,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853536016] [2024-06-28 02:23:15,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:15,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:15,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:15,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:15,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:15,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:15,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 289 transitions, 3770 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:15,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:15,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:15,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:15,924 INFO L124 PetriNetUnfolderBase]: 1963/3336 cut-off events. [2024-06-28 02:23:15,924 INFO L125 PetriNetUnfolderBase]: For 189232/189232 co-relation queries the response was YES. [2024-06-28 02:23:15,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21281 conditions, 3336 events. 1963/3336 cut-off events. For 189232/189232 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 20524 event pairs, 323 based on Foata normal form. 20/3354 useless extension candidates. Maximal degree in co-relation 21174. Up to 2699 conditions per place. [2024-06-28 02:23:15,959 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 228 selfloop transitions, 91 changer transitions 0/327 dead transitions. [2024-06-28 02:23:15,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 327 transitions, 4574 flow [2024-06-28 02:23:15,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:23:15,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:23:15,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-28 02:23:15,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6341463414634146 [2024-06-28 02:23:15,960 INFO L175 Difference]: Start difference. First operand has 229 places, 289 transitions, 3770 flow. Second operand 8 states and 208 transitions. [2024-06-28 02:23:15,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 327 transitions, 4574 flow [2024-06-28 02:23:16,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 327 transitions, 4495 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-28 02:23:16,335 INFO L231 Difference]: Finished difference. Result has 233 places, 293 transitions, 3967 flow [2024-06-28 02:23:16,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3691, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3967, PETRI_PLACES=233, PETRI_TRANSITIONS=293} [2024-06-28 02:23:16,335 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 191 predicate places. [2024-06-28 02:23:16,335 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 293 transitions, 3967 flow [2024-06-28 02:23:16,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:16,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:16,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:16,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 02:23:16,336 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:16,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:16,336 INFO L85 PathProgramCache]: Analyzing trace with hash 145157684, now seen corresponding path program 2 times [2024-06-28 02:23:16,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:16,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67998760] [2024-06-28 02:23:16,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:16,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:16,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:16,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:16,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67998760] [2024-06-28 02:23:16,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67998760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:16,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:16,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:16,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197209689] [2024-06-28 02:23:16,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:16,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:16,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:16,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:16,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:16,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:16,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 293 transitions, 3967 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:16,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:16,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:16,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:16,910 INFO L124 PetriNetUnfolderBase]: 1976/3350 cut-off events. [2024-06-28 02:23:16,910 INFO L125 PetriNetUnfolderBase]: For 166795/166795 co-relation queries the response was YES. [2024-06-28 02:23:16,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21990 conditions, 3350 events. 1976/3350 cut-off events. For 166795/166795 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 20574 event pairs, 380 based on Foata normal form. 2/3350 useless extension candidates. Maximal degree in co-relation 21882. Up to 3022 conditions per place. [2024-06-28 02:23:16,945 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 275 selfloop transitions, 29 changer transitions 0/312 dead transitions. [2024-06-28 02:23:16,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 312 transitions, 4694 flow [2024-06-28 02:23:16,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:23:16,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:23:16,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-28 02:23:16,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5772357723577236 [2024-06-28 02:23:16,946 INFO L175 Difference]: Start difference. First operand has 233 places, 293 transitions, 3967 flow. Second operand 6 states and 142 transitions. [2024-06-28 02:23:16,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 312 transitions, 4694 flow [2024-06-28 02:23:17,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 312 transitions, 4500 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 02:23:17,338 INFO L231 Difference]: Finished difference. Result has 234 places, 298 transitions, 3928 flow [2024-06-28 02:23:17,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3781, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3928, PETRI_PLACES=234, PETRI_TRANSITIONS=298} [2024-06-28 02:23:17,339 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 192 predicate places. [2024-06-28 02:23:17,339 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 298 transitions, 3928 flow [2024-06-28 02:23:17,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:17,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:17,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:17,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 02:23:17,340 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:17,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:17,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1561578098, now seen corresponding path program 3 times [2024-06-28 02:23:17,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:17,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058961393] [2024-06-28 02:23:17,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:17,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:17,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:17,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:17,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058961393] [2024-06-28 02:23:17,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058961393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:17,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:17,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:17,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42673391] [2024-06-28 02:23:17,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:17,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:17,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:17,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:17,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:17,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:17,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 298 transitions, 3928 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:17,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:17,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:17,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:17,873 INFO L124 PetriNetUnfolderBase]: 1984/3362 cut-off events. [2024-06-28 02:23:17,873 INFO L125 PetriNetUnfolderBase]: For 165621/165621 co-relation queries the response was YES. [2024-06-28 02:23:17,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21718 conditions, 3362 events. 1984/3362 cut-off events. For 165621/165621 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 20663 event pairs, 382 based on Foata normal form. 2/3362 useless extension candidates. Maximal degree in co-relation 21609. Up to 3028 conditions per place. [2024-06-28 02:23:17,911 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 276 selfloop transitions, 29 changer transitions 0/313 dead transitions. [2024-06-28 02:23:17,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 313 transitions, 4614 flow [2024-06-28 02:23:17,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:23:17,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:23:17,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-06-28 02:23:17,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-28 02:23:17,912 INFO L175 Difference]: Start difference. First operand has 234 places, 298 transitions, 3928 flow. Second operand 5 states and 123 transitions. [2024-06-28 02:23:17,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 313 transitions, 4614 flow [2024-06-28 02:23:18,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 313 transitions, 4538 flow, removed 23 selfloop flow, removed 2 redundant places. [2024-06-28 02:23:18,294 INFO L231 Difference]: Finished difference. Result has 237 places, 300 transitions, 3969 flow [2024-06-28 02:23:18,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3856, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3969, PETRI_PLACES=237, PETRI_TRANSITIONS=300} [2024-06-28 02:23:18,294 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 195 predicate places. [2024-06-28 02:23:18,294 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 300 transitions, 3969 flow [2024-06-28 02:23:18,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:18,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:18,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:18,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 02:23:18,295 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:18,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:18,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1331362178, now seen corresponding path program 4 times [2024-06-28 02:23:18,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:18,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408921738] [2024-06-28 02:23:18,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:18,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:18,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:18,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:18,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408921738] [2024-06-28 02:23:18,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408921738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:18,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:18,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:18,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752574270] [2024-06-28 02:23:18,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:18,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:18,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:18,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:18,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:18,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:18,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 300 transitions, 3969 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:18,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:18,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:18,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:18,853 INFO L124 PetriNetUnfolderBase]: 1979/3360 cut-off events. [2024-06-28 02:23:18,853 INFO L125 PetriNetUnfolderBase]: For 162497/162500 co-relation queries the response was YES. [2024-06-28 02:23:18,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21523 conditions, 3360 events. 1979/3360 cut-off events. For 162497/162500 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 20696 event pairs, 380 based on Foata normal form. 4/3361 useless extension candidates. Maximal degree in co-relation 21413. Up to 3007 conditions per place. [2024-06-28 02:23:18,888 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 275 selfloop transitions, 30 changer transitions 0/313 dead transitions. [2024-06-28 02:23:18,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 313 transitions, 4649 flow [2024-06-28 02:23:18,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:23:18,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:23:18,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-28 02:23:18,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5853658536585366 [2024-06-28 02:23:18,890 INFO L175 Difference]: Start difference. First operand has 237 places, 300 transitions, 3969 flow. Second operand 5 states and 120 transitions. [2024-06-28 02:23:18,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 313 transitions, 4649 flow [2024-06-28 02:23:19,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 313 transitions, 4558 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-28 02:23:19,285 INFO L231 Difference]: Finished difference. Result has 239 places, 302 transitions, 3991 flow [2024-06-28 02:23:19,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3882, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3991, PETRI_PLACES=239, PETRI_TRANSITIONS=302} [2024-06-28 02:23:19,285 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 197 predicate places. [2024-06-28 02:23:19,285 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 302 transitions, 3991 flow [2024-06-28 02:23:19,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:19,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:19,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:19,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 02:23:19,286 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:19,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:19,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1708044062, now seen corresponding path program 1 times [2024-06-28 02:23:19,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:19,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100517392] [2024-06-28 02:23:19,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:19,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:19,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:19,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:19,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100517392] [2024-06-28 02:23:19,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100517392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:19,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:19,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:19,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355398578] [2024-06-28 02:23:19,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:19,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:19,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:19,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:19,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:19,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:19,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 302 transitions, 3991 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:19,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:19,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:19,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:19,894 INFO L124 PetriNetUnfolderBase]: 1992/3377 cut-off events. [2024-06-28 02:23:19,894 INFO L125 PetriNetUnfolderBase]: For 161851/161851 co-relation queries the response was YES. [2024-06-28 02:23:19,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21656 conditions, 3377 events. 1992/3377 cut-off events. For 161851/161851 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 20780 event pairs, 379 based on Foata normal form. 1/3376 useless extension candidates. Maximal degree in co-relation 21545. Up to 3022 conditions per place. [2024-06-28 02:23:19,931 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 296 selfloop transitions, 31 changer transitions 0/335 dead transitions. [2024-06-28 02:23:19,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 335 transitions, 4913 flow [2024-06-28 02:23:19,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:23:19,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:23:19,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-28 02:23:19,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6062717770034843 [2024-06-28 02:23:19,933 INFO L175 Difference]: Start difference. First operand has 239 places, 302 transitions, 3991 flow. Second operand 7 states and 174 transitions. [2024-06-28 02:23:19,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 335 transitions, 4913 flow [2024-06-28 02:23:20,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 335 transitions, 4820 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-28 02:23:20,319 INFO L231 Difference]: Finished difference. Result has 243 places, 308 transitions, 4056 flow [2024-06-28 02:23:20,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3898, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4056, PETRI_PLACES=243, PETRI_TRANSITIONS=308} [2024-06-28 02:23:20,321 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 201 predicate places. [2024-06-28 02:23:20,321 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 308 transitions, 4056 flow [2024-06-28 02:23:20,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:20,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:20,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:20,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 02:23:20,322 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:20,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:20,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1343070004, now seen corresponding path program 2 times [2024-06-28 02:23:20,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:20,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524341665] [2024-06-28 02:23:20,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:20,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:20,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:20,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:20,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:20,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524341665] [2024-06-28 02:23:20,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524341665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:20,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:20,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:20,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300018959] [2024-06-28 02:23:20,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:20,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:20,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:20,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:20,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:20,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:20,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 308 transitions, 4056 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:20,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:20,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:20,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:20,940 INFO L124 PetriNetUnfolderBase]: 2002/3393 cut-off events. [2024-06-28 02:23:20,940 INFO L125 PetriNetUnfolderBase]: For 167790/167790 co-relation queries the response was YES. [2024-06-28 02:23:20,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22010 conditions, 3393 events. 2002/3393 cut-off events. For 167790/167790 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 20878 event pairs, 379 based on Foata normal form. 1/3392 useless extension candidates. Maximal degree in co-relation 21898. Up to 3032 conditions per place. [2024-06-28 02:23:20,976 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 297 selfloop transitions, 38 changer transitions 0/343 dead transitions. [2024-06-28 02:23:20,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 343 transitions, 4993 flow [2024-06-28 02:23:20,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:20,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:20,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-28 02:23:20,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5745257452574526 [2024-06-28 02:23:20,978 INFO L175 Difference]: Start difference. First operand has 243 places, 308 transitions, 4056 flow. Second operand 9 states and 212 transitions. [2024-06-28 02:23:20,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 343 transitions, 4993 flow [2024-06-28 02:23:21,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 343 transitions, 4844 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-28 02:23:21,346 INFO L231 Difference]: Finished difference. Result has 247 places, 314 transitions, 4066 flow [2024-06-28 02:23:21,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3923, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4066, PETRI_PLACES=247, PETRI_TRANSITIONS=314} [2024-06-28 02:23:21,347 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 205 predicate places. [2024-06-28 02:23:21,347 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 314 transitions, 4066 flow [2024-06-28 02:23:21,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:21,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:21,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:21,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 02:23:21,348 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:21,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:21,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1710903998, now seen corresponding path program 1 times [2024-06-28 02:23:21,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:21,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271878458] [2024-06-28 02:23:21,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:21,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:21,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:21,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:21,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:21,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271878458] [2024-06-28 02:23:21,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271878458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:21,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:21,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:21,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087615551] [2024-06-28 02:23:21,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:21,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:21,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:21,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:21,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:21,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:21,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 314 transitions, 4066 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:21,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:21,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:21,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:22,000 INFO L124 PetriNetUnfolderBase]: 2010/3405 cut-off events. [2024-06-28 02:23:22,000 INFO L125 PetriNetUnfolderBase]: For 174097/174097 co-relation queries the response was YES. [2024-06-28 02:23:22,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22148 conditions, 3405 events. 2010/3405 cut-off events. For 174097/174097 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 20934 event pairs, 298 based on Foata normal form. 2/3405 useless extension candidates. Maximal degree in co-relation 22037. Up to 3010 conditions per place. [2024-06-28 02:23:22,039 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 307 selfloop transitions, 33 changer transitions 0/348 dead transitions. [2024-06-28 02:23:22,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 348 transitions, 5016 flow [2024-06-28 02:23:22,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:23:22,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:23:22,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-28 02:23:22,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6062717770034843 [2024-06-28 02:23:22,040 INFO L175 Difference]: Start difference. First operand has 247 places, 314 transitions, 4066 flow. Second operand 7 states and 174 transitions. [2024-06-28 02:23:22,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 348 transitions, 5016 flow [2024-06-28 02:23:22,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 348 transitions, 4918 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 02:23:22,507 INFO L231 Difference]: Finished difference. Result has 249 places, 319 transitions, 4133 flow [2024-06-28 02:23:22,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3968, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4133, PETRI_PLACES=249, PETRI_TRANSITIONS=319} [2024-06-28 02:23:22,508 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 207 predicate places. [2024-06-28 02:23:22,508 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 319 transitions, 4133 flow [2024-06-28 02:23:22,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:22,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:22,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:22,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 02:23:22,509 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:22,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:22,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1343067028, now seen corresponding path program 2 times [2024-06-28 02:23:22,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:22,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809552923] [2024-06-28 02:23:22,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:22,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:22,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:22,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:22,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:22,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809552923] [2024-06-28 02:23:22,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809552923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:22,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:22,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:22,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914028476] [2024-06-28 02:23:22,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:22,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:22,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:22,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:22,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:22,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:22,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 319 transitions, 4133 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:22,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:22,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:22,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:23,132 INFO L124 PetriNetUnfolderBase]: 2018/3417 cut-off events. [2024-06-28 02:23:23,132 INFO L125 PetriNetUnfolderBase]: For 179990/179990 co-relation queries the response was YES. [2024-06-28 02:23:23,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22438 conditions, 3417 events. 2018/3417 cut-off events. For 179990/179990 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 20994 event pairs, 377 based on Foata normal form. 2/3417 useless extension candidates. Maximal degree in co-relation 22325. Up to 3071 conditions per place. [2024-06-28 02:23:23,169 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 309 selfloop transitions, 28 changer transitions 0/345 dead transitions. [2024-06-28 02:23:23,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 345 transitions, 4905 flow [2024-06-28 02:23:23,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:23:23,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:23:23,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 02:23:23,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5888501742160279 [2024-06-28 02:23:23,170 INFO L175 Difference]: Start difference. First operand has 249 places, 319 transitions, 4133 flow. Second operand 7 states and 169 transitions. [2024-06-28 02:23:23,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 345 transitions, 4905 flow [2024-06-28 02:23:23,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 345 transitions, 4813 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-06-28 02:23:23,639 INFO L231 Difference]: Finished difference. Result has 253 places, 321 transitions, 4144 flow [2024-06-28 02:23:23,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4053, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4144, PETRI_PLACES=253, PETRI_TRANSITIONS=321} [2024-06-28 02:23:23,640 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 211 predicate places. [2024-06-28 02:23:23,640 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 321 transitions, 4144 flow [2024-06-28 02:23:23,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:23,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:23,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:23,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 02:23:23,640 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:23,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:23,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1618286388, now seen corresponding path program 3 times [2024-06-28 02:23:23,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:23,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593119666] [2024-06-28 02:23:23,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:23,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:23,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:23,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:23,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:23,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593119666] [2024-06-28 02:23:23,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593119666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:23,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:23,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:23,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057915390] [2024-06-28 02:23:23,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:23,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:23,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:23,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:23,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:23,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:23,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 321 transitions, 4144 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:23,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:23,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:23,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:24,239 INFO L124 PetriNetUnfolderBase]: 2039/3446 cut-off events. [2024-06-28 02:23:24,239 INFO L125 PetriNetUnfolderBase]: For 188464/188467 co-relation queries the response was YES. [2024-06-28 02:23:24,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22796 conditions, 3446 events. 2039/3446 cut-off events. For 188464/188467 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 21262 event pairs, 412 based on Foata normal form. 1/3434 useless extension candidates. Maximal degree in co-relation 22681. Up to 2834 conditions per place. [2024-06-28 02:23:24,276 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 251 selfloop transitions, 102 changer transitions 0/361 dead transitions. [2024-06-28 02:23:24,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 361 transitions, 5610 flow [2024-06-28 02:23:24,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:23:24,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:23:24,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-28 02:23:24,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6341463414634146 [2024-06-28 02:23:24,278 INFO L175 Difference]: Start difference. First operand has 253 places, 321 transitions, 4144 flow. Second operand 7 states and 182 transitions. [2024-06-28 02:23:24,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 361 transitions, 5610 flow [2024-06-28 02:23:24,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 361 transitions, 5541 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 02:23:24,688 INFO L231 Difference]: Finished difference. Result has 255 places, 334 transitions, 4491 flow [2024-06-28 02:23:24,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4075, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4491, PETRI_PLACES=255, PETRI_TRANSITIONS=334} [2024-06-28 02:23:24,689 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 213 predicate places. [2024-06-28 02:23:24,689 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 334 transitions, 4491 flow [2024-06-28 02:23:24,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:24,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:24,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:24,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 02:23:24,690 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:24,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:24,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1452945784, now seen corresponding path program 4 times [2024-06-28 02:23:24,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:24,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185655627] [2024-06-28 02:23:24,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:24,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:24,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:24,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:24,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185655627] [2024-06-28 02:23:24,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185655627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:24,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:24,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:24,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531039508] [2024-06-28 02:23:24,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:24,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:24,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:24,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:24,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:24,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:24,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 334 transitions, 4491 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:24,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:24,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:24,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:25,288 INFO L124 PetriNetUnfolderBase]: 2044/3455 cut-off events. [2024-06-28 02:23:25,288 INFO L125 PetriNetUnfolderBase]: For 196321/196324 co-relation queries the response was YES. [2024-06-28 02:23:25,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23502 conditions, 3455 events. 2044/3455 cut-off events. For 196321/196324 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 21312 event pairs, 412 based on Foata normal form. 1/3443 useless extension candidates. Maximal degree in co-relation 23386. Up to 2838 conditions per place. [2024-06-28 02:23:25,325 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 248 selfloop transitions, 104 changer transitions 0/360 dead transitions. [2024-06-28 02:23:25,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 360 transitions, 5685 flow [2024-06-28 02:23:25,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:23:25,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:23:25,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-28 02:23:25,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6202090592334495 [2024-06-28 02:23:25,329 INFO L175 Difference]: Start difference. First operand has 255 places, 334 transitions, 4491 flow. Second operand 7 states and 178 transitions. [2024-06-28 02:23:25,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 360 transitions, 5685 flow [2024-06-28 02:23:25,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 360 transitions, 5562 flow, removed 47 selfloop flow, removed 1 redundant places. [2024-06-28 02:23:25,799 INFO L231 Difference]: Finished difference. Result has 261 places, 337 transitions, 4638 flow [2024-06-28 02:23:25,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4390, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4638, PETRI_PLACES=261, PETRI_TRANSITIONS=337} [2024-06-28 02:23:25,800 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 219 predicate places. [2024-06-28 02:23:25,800 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 337 transitions, 4638 flow [2024-06-28 02:23:25,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:25,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:25,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:25,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 02:23:25,801 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:25,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:25,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1474857164, now seen corresponding path program 5 times [2024-06-28 02:23:25,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:25,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747335017] [2024-06-28 02:23:25,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:25,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:25,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:25,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:25,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:25,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747335017] [2024-06-28 02:23:25,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747335017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:25,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:25,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:25,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496408776] [2024-06-28 02:23:25,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:25,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:25,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:25,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:25,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:25,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:25,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 337 transitions, 4638 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:25,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:25,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:25,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:26,487 INFO L124 PetriNetUnfolderBase]: 2049/3474 cut-off events. [2024-06-28 02:23:26,487 INFO L125 PetriNetUnfolderBase]: For 200639/200639 co-relation queries the response was YES. [2024-06-28 02:23:26,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23672 conditions, 3474 events. 2049/3474 cut-off events. For 200639/200639 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 21497 event pairs, 377 based on Foata normal form. 1/3473 useless extension candidates. Maximal degree in co-relation 23553. Up to 3117 conditions per place. [2024-06-28 02:23:26,526 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 321 selfloop transitions, 28 changer transitions 0/357 dead transitions. [2024-06-28 02:23:26,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 357 transitions, 5423 flow [2024-06-28 02:23:26,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:23:26,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:23:26,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-28 02:23:26,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-06-28 02:23:26,528 INFO L175 Difference]: Start difference. First operand has 261 places, 337 transitions, 4638 flow. Second operand 7 states and 164 transitions. [2024-06-28 02:23:26,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 357 transitions, 5423 flow [2024-06-28 02:23:26,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 357 transitions, 5267 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-28 02:23:26,985 INFO L231 Difference]: Finished difference. Result has 265 places, 340 transitions, 4595 flow [2024-06-28 02:23:26,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4485, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4595, PETRI_PLACES=265, PETRI_TRANSITIONS=340} [2024-06-28 02:23:26,986 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 223 predicate places. [2024-06-28 02:23:26,986 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 340 transitions, 4595 flow [2024-06-28 02:23:26,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:26,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:26,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:26,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 02:23:26,987 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:26,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:26,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1470095564, now seen corresponding path program 6 times [2024-06-28 02:23:26,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:26,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612996368] [2024-06-28 02:23:26,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:26,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:26,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:27,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:27,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:27,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612996368] [2024-06-28 02:23:27,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612996368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:27,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:27,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:27,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198197776] [2024-06-28 02:23:27,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:27,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:27,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:27,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:27,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:27,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:27,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 340 transitions, 4595 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:27,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:27,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:27,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:27,597 INFO L124 PetriNetUnfolderBase]: 2070/3497 cut-off events. [2024-06-28 02:23:27,598 INFO L125 PetriNetUnfolderBase]: For 211485/211488 co-relation queries the response was YES. [2024-06-28 02:23:27,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23888 conditions, 3497 events. 2070/3497 cut-off events. For 211485/211488 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 21602 event pairs, 412 based on Foata normal form. 1/3485 useless extension candidates. Maximal degree in co-relation 23768. Up to 2861 conditions per place. [2024-06-28 02:23:27,638 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 245 selfloop transitions, 114 changer transitions 0/367 dead transitions. [2024-06-28 02:23:27,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 367 transitions, 5860 flow [2024-06-28 02:23:27,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:23:27,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:23:27,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 02:23:27,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6132404181184669 [2024-06-28 02:23:27,640 INFO L175 Difference]: Start difference. First operand has 265 places, 340 transitions, 4595 flow. Second operand 7 states and 176 transitions. [2024-06-28 02:23:27,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 367 transitions, 5860 flow [2024-06-28 02:23:28,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 367 transitions, 5786 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 02:23:28,170 INFO L231 Difference]: Finished difference. Result has 268 places, 347 transitions, 4864 flow [2024-06-28 02:23:28,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4521, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4864, PETRI_PLACES=268, PETRI_TRANSITIONS=347} [2024-06-28 02:23:28,171 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 226 predicate places. [2024-06-28 02:23:28,171 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 347 transitions, 4864 flow [2024-06-28 02:23:28,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:28,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:28,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:28,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 02:23:28,171 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:28,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:28,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1474860140, now seen corresponding path program 3 times [2024-06-28 02:23:28,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:28,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767607169] [2024-06-28 02:23:28,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:28,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:28,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:28,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:28,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767607169] [2024-06-28 02:23:28,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767607169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:28,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:28,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:28,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591709371] [2024-06-28 02:23:28,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:28,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:28,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:28,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:28,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:28,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:28,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 347 transitions, 4864 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:28,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:28,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:28,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:28,867 INFO L124 PetriNetUnfolderBase]: 2065/3502 cut-off events. [2024-06-28 02:23:28,867 INFO L125 PetriNetUnfolderBase]: For 215232/215232 co-relation queries the response was YES. [2024-06-28 02:23:28,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24083 conditions, 3502 events. 2065/3502 cut-off events. For 215232/215232 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 21682 event pairs, 376 based on Foata normal form. 2/3502 useless extension candidates. Maximal degree in co-relation 23962. Up to 3136 conditions per place. [2024-06-28 02:23:28,909 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 330 selfloop transitions, 27 changer transitions 0/365 dead transitions. [2024-06-28 02:23:28,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 365 transitions, 5622 flow [2024-06-28 02:23:28,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:23:28,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:23:28,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-28 02:23:28,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-06-28 02:23:28,910 INFO L175 Difference]: Start difference. First operand has 268 places, 347 transitions, 4864 flow. Second operand 7 states and 164 transitions. [2024-06-28 02:23:28,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 365 transitions, 5622 flow [2024-06-28 02:23:29,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 365 transitions, 5433 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-28 02:23:29,384 INFO L231 Difference]: Finished difference. Result has 272 places, 347 transitions, 4734 flow [2024-06-28 02:23:29,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4675, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4734, PETRI_PLACES=272, PETRI_TRANSITIONS=347} [2024-06-28 02:23:29,385 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 230 predicate places. [2024-06-28 02:23:29,385 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 347 transitions, 4734 flow [2024-06-28 02:23:29,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:29,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:29,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:29,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 02:23:29,386 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:29,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:29,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1628774587, now seen corresponding path program 1 times [2024-06-28 02:23:29,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:29,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199401087] [2024-06-28 02:23:29,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:29,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:29,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:29,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:29,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199401087] [2024-06-28 02:23:29,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199401087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:29,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:29,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:23:29,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933122105] [2024-06-28 02:23:29,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:29,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:23:29,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:29,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:23:29,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:23:29,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:29,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 347 transitions, 4734 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:23:29,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:29,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:29,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:30,064 INFO L124 PetriNetUnfolderBase]: 2070/3505 cut-off events. [2024-06-28 02:23:30,064 INFO L125 PetriNetUnfolderBase]: For 219087/219090 co-relation queries the response was YES. [2024-06-28 02:23:30,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23928 conditions, 3505 events. 2070/3505 cut-off events. For 219087/219090 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 21678 event pairs, 416 based on Foata normal form. 1/3497 useless extension candidates. Maximal degree in co-relation 23806. Up to 2901 conditions per place. [2024-06-28 02:23:30,106 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 215 selfloop transitions, 150 changer transitions 0/373 dead transitions. [2024-06-28 02:23:30,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 373 transitions, 5834 flow [2024-06-28 02:23:30,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:23:30,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:23:30,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 02:23:30,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5945121951219512 [2024-06-28 02:23:30,107 INFO L175 Difference]: Start difference. First operand has 272 places, 347 transitions, 4734 flow. Second operand 8 states and 195 transitions. [2024-06-28 02:23:30,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 373 transitions, 5834 flow [2024-06-28 02:23:30,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 373 transitions, 5795 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 02:23:30,621 INFO L231 Difference]: Finished difference. Result has 277 places, 350 transitions, 5047 flow [2024-06-28 02:23:30,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4695, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5047, PETRI_PLACES=277, PETRI_TRANSITIONS=350} [2024-06-28 02:23:30,622 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 235 predicate places. [2024-06-28 02:23:30,622 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 350 transitions, 5047 flow [2024-06-28 02:23:30,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:23:30,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:30,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:30,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 02:23:30,622 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:30,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:30,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1674104751, now seen corresponding path program 2 times [2024-06-28 02:23:30,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:30,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366417888] [2024-06-28 02:23:30,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:30,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:30,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:30,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:30,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366417888] [2024-06-28 02:23:30,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366417888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:30,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:30,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:23:30,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456842211] [2024-06-28 02:23:30,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:30,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:23:30,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:30,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:23:30,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:23:30,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:30,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 350 transitions, 5047 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:23:30,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:30,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:30,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:31,372 INFO L124 PetriNetUnfolderBase]: 2075/3514 cut-off events. [2024-06-28 02:23:31,372 INFO L125 PetriNetUnfolderBase]: For 226740/226743 co-relation queries the response was YES. [2024-06-28 02:23:31,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24427 conditions, 3514 events. 2075/3514 cut-off events. For 226740/226743 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 21825 event pairs, 415 based on Foata normal form. 1/3506 useless extension candidates. Maximal degree in co-relation 24304. Up to 2907 conditions per place. [2024-06-28 02:23:31,410 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 215 selfloop transitions, 153 changer transitions 0/376 dead transitions. [2024-06-28 02:23:31,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 376 transitions, 6163 flow [2024-06-28 02:23:31,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:23:31,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:23:31,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 02:23:31,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.600609756097561 [2024-06-28 02:23:31,412 INFO L175 Difference]: Start difference. First operand has 277 places, 350 transitions, 5047 flow. Second operand 8 states and 197 transitions. [2024-06-28 02:23:31,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 376 transitions, 6163 flow [2024-06-28 02:23:31,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 376 transitions, 5909 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 02:23:31,990 INFO L231 Difference]: Finished difference. Result has 280 places, 353 transitions, 5157 flow [2024-06-28 02:23:31,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4796, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5157, PETRI_PLACES=280, PETRI_TRANSITIONS=353} [2024-06-28 02:23:31,991 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 238 predicate places. [2024-06-28 02:23:31,991 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 353 transitions, 5157 flow [2024-06-28 02:23:31,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:23:31,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:31,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:31,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 02:23:31,992 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:31,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:31,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1210562189, now seen corresponding path program 3 times [2024-06-28 02:23:31,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:31,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260389162] [2024-06-28 02:23:31,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:31,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:31,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:32,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:32,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:32,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260389162] [2024-06-28 02:23:32,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260389162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:32,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:32,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:23:32,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72563521] [2024-06-28 02:23:32,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:32,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:23:32,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:32,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:23:32,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:23:32,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:32,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 353 transitions, 5157 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:23:32,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:32,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:32,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:32,680 INFO L124 PetriNetUnfolderBase]: 2088/3536 cut-off events. [2024-06-28 02:23:32,680 INFO L125 PetriNetUnfolderBase]: For 236564/236567 co-relation queries the response was YES. [2024-06-28 02:23:32,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24756 conditions, 3536 events. 2088/3536 cut-off events. For 236564/236567 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 21950 event pairs, 417 based on Foata normal form. 1/3528 useless extension candidates. Maximal degree in co-relation 24631. Up to 2922 conditions per place. [2024-06-28 02:23:32,724 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 214 selfloop transitions, 159 changer transitions 0/381 dead transitions. [2024-06-28 02:23:32,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 381 transitions, 6479 flow [2024-06-28 02:23:32,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:32,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:32,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-28 02:23:32,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5799457994579946 [2024-06-28 02:23:32,725 INFO L175 Difference]: Start difference. First operand has 280 places, 353 transitions, 5157 flow. Second operand 9 states and 214 transitions. [2024-06-28 02:23:32,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 381 transitions, 6479 flow [2024-06-28 02:23:33,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 381 transitions, 6125 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 02:23:33,366 INFO L231 Difference]: Finished difference. Result has 283 places, 359 transitions, 5237 flow [2024-06-28 02:23:33,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4815, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5237, PETRI_PLACES=283, PETRI_TRANSITIONS=359} [2024-06-28 02:23:33,367 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 241 predicate places. [2024-06-28 02:23:33,367 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 359 transitions, 5237 flow [2024-06-28 02:23:33,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:23:33,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:33,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:33,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 02:23:33,367 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:33,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:33,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1438682819, now seen corresponding path program 4 times [2024-06-28 02:23:33,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:33,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146137301] [2024-06-28 02:23:33,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:33,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:33,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:33,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:33,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:33,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146137301] [2024-06-28 02:23:33,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146137301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:33,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:33,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:23:33,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765567774] [2024-06-28 02:23:33,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:33,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:23:33,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:33,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:23:33,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:23:33,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:33,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 359 transitions, 5237 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:23:33,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:33,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:33,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:34,063 INFO L124 PetriNetUnfolderBase]: 2101/3561 cut-off events. [2024-06-28 02:23:34,064 INFO L125 PetriNetUnfolderBase]: For 245277/245280 co-relation queries the response was YES. [2024-06-28 02:23:34,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25046 conditions, 3561 events. 2101/3561 cut-off events. For 245277/245280 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 22156 event pairs, 412 based on Foata normal form. 1/3556 useless extension candidates. Maximal degree in co-relation 24920. Up to 2937 conditions per place. [2024-06-28 02:23:34,111 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 217 selfloop transitions, 163 changer transitions 0/388 dead transitions. [2024-06-28 02:23:34,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 388 transitions, 6721 flow [2024-06-28 02:23:34,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:34,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:34,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-06-28 02:23:34,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5880758807588076 [2024-06-28 02:23:34,112 INFO L175 Difference]: Start difference. First operand has 283 places, 359 transitions, 5237 flow. Second operand 9 states and 217 transitions. [2024-06-28 02:23:34,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 388 transitions, 6721 flow [2024-06-28 02:23:34,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 388 transitions, 6411 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-28 02:23:34,880 INFO L231 Difference]: Finished difference. Result has 287 places, 365 transitions, 5369 flow [2024-06-28 02:23:34,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4955, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5369, PETRI_PLACES=287, PETRI_TRANSITIONS=365} [2024-06-28 02:23:34,880 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 245 predicate places. [2024-06-28 02:23:34,880 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 365 transitions, 5369 flow [2024-06-28 02:23:34,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:23:34,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:34,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:34,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 02:23:34,881 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:34,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:34,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1470082885, now seen corresponding path program 5 times [2024-06-28 02:23:34,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:34,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095235585] [2024-06-28 02:23:34,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:34,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:34,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:34,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:34,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:34,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095235585] [2024-06-28 02:23:34,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095235585] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:34,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:34,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:23:34,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120969875] [2024-06-28 02:23:34,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:34,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:23:34,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:34,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:23:34,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:23:35,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:35,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 365 transitions, 5369 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:23:35,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:35,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:35,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:35,548 INFO L124 PetriNetUnfolderBase]: 2098/3551 cut-off events. [2024-06-28 02:23:35,548 INFO L125 PetriNetUnfolderBase]: For 250171/250174 co-relation queries the response was YES. [2024-06-28 02:23:35,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24984 conditions, 3551 events. 2098/3551 cut-off events. For 250171/250174 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 22031 event pairs, 421 based on Foata normal form. 1/3540 useless extension candidates. Maximal degree in co-relation 24856. Up to 2934 conditions per place. [2024-06-28 02:23:35,589 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 214 selfloop transitions, 163 changer transitions 0/385 dead transitions. [2024-06-28 02:23:35,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 385 transitions, 6455 flow [2024-06-28 02:23:35,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:23:35,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:23:35,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 02:23:35,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5914634146341463 [2024-06-28 02:23:35,591 INFO L175 Difference]: Start difference. First operand has 287 places, 365 transitions, 5369 flow. Second operand 8 states and 194 transitions. [2024-06-28 02:23:35,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 385 transitions, 6455 flow [2024-06-28 02:23:36,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 385 transitions, 5946 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-28 02:23:36,270 INFO L231 Difference]: Finished difference. Result has 288 places, 365 transitions, 5192 flow [2024-06-28 02:23:36,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4860, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5192, PETRI_PLACES=288, PETRI_TRANSITIONS=365} [2024-06-28 02:23:36,270 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 246 predicate places. [2024-06-28 02:23:36,270 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 365 transitions, 5192 flow [2024-06-28 02:23:36,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:23:36,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:36,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:36,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 02:23:36,271 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:36,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:36,271 INFO L85 PathProgramCache]: Analyzing trace with hash -277289932, now seen corresponding path program 7 times [2024-06-28 02:23:36,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:36,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196028517] [2024-06-28 02:23:36,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:36,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:36,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:36,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:36,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:36,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196028517] [2024-06-28 02:23:36,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196028517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:36,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:36,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:36,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128307900] [2024-06-28 02:23:36,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:36,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:36,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:36,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:36,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:36,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:36,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 365 transitions, 5192 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:36,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:36,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:36,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:36,879 INFO L124 PetriNetUnfolderBase]: 2108/3569 cut-off events. [2024-06-28 02:23:36,879 INFO L125 PetriNetUnfolderBase]: For 258288/258288 co-relation queries the response was YES. [2024-06-28 02:23:36,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24843 conditions, 3569 events. 2108/3569 cut-off events. For 258288/258288 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 22281 event pairs, 392 based on Foata normal form. 2/3563 useless extension candidates. Maximal degree in co-relation 24715. Up to 2910 conditions per place. [2024-06-28 02:23:36,932 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 277 selfloop transitions, 106 changer transitions 0/391 dead transitions. [2024-06-28 02:23:36,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 391 transitions, 6366 flow [2024-06-28 02:23:36,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:23:36,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:23:36,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 02:23:36,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6167247386759582 [2024-06-28 02:23:36,933 INFO L175 Difference]: Start difference. First operand has 288 places, 365 transitions, 5192 flow. Second operand 7 states and 177 transitions. [2024-06-28 02:23:36,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 391 transitions, 6366 flow [2024-06-28 02:23:37,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 391 transitions, 6032 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 02:23:37,609 INFO L231 Difference]: Finished difference. Result has 288 places, 369 transitions, 5143 flow [2024-06-28 02:23:37,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4858, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5143, PETRI_PLACES=288, PETRI_TRANSITIONS=369} [2024-06-28 02:23:37,610 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 246 predicate places. [2024-06-28 02:23:37,610 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 369 transitions, 5143 flow [2024-06-28 02:23:37,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:37,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:37,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:37,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 02:23:37,611 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:37,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:37,612 INFO L85 PathProgramCache]: Analyzing trace with hash -941709516, now seen corresponding path program 8 times [2024-06-28 02:23:37,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:37,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918499178] [2024-06-28 02:23:37,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:37,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:37,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:37,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:37,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:37,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918499178] [2024-06-28 02:23:37,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918499178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:37,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:37,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:37,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980823035] [2024-06-28 02:23:37,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:37,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:37,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:37,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:37,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:37,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:37,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 369 transitions, 5143 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:37,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:37,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:37,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:38,295 INFO L124 PetriNetUnfolderBase]: 2102/3561 cut-off events. [2024-06-28 02:23:38,296 INFO L125 PetriNetUnfolderBase]: For 258925/258925 co-relation queries the response was YES. [2024-06-28 02:23:38,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24634 conditions, 3561 events. 2102/3561 cut-off events. For 258925/258925 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 22238 event pairs, 392 based on Foata normal form. 2/3555 useless extension candidates. Maximal degree in co-relation 24505. Up to 2905 conditions per place. [2024-06-28 02:23:38,339 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 277 selfloop transitions, 103 changer transitions 0/388 dead transitions. [2024-06-28 02:23:38,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 388 transitions, 6241 flow [2024-06-28 02:23:38,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:23:38,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:23:38,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 02:23:38,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6097560975609756 [2024-06-28 02:23:38,340 INFO L175 Difference]: Start difference. First operand has 288 places, 369 transitions, 5143 flow. Second operand 7 states and 175 transitions. [2024-06-28 02:23:38,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 388 transitions, 6241 flow [2024-06-28 02:23:39,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 388 transitions, 5894 flow, removed 60 selfloop flow, removed 5 redundant places. [2024-06-28 02:23:39,028 INFO L231 Difference]: Finished difference. Result has 290 places, 369 transitions, 5009 flow [2024-06-28 02:23:39,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4796, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5009, PETRI_PLACES=290, PETRI_TRANSITIONS=369} [2024-06-28 02:23:39,029 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 248 predicate places. [2024-06-28 02:23:39,029 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 369 transitions, 5009 flow [2024-06-28 02:23:39,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:39,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:39,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:39,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 02:23:39,029 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:39,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:39,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1481474854, now seen corresponding path program 9 times [2024-06-28 02:23:39,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:39,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465874617] [2024-06-28 02:23:39,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:39,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:39,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:39,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:39,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:39,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465874617] [2024-06-28 02:23:39,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465874617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:39,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:39,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:39,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483448677] [2024-06-28 02:23:39,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:39,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:39,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:39,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:39,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:39,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:39,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 369 transitions, 5009 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:39,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:39,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:39,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:39,671 INFO L124 PetriNetUnfolderBase]: 2138/3632 cut-off events. [2024-06-28 02:23:39,672 INFO L125 PetriNetUnfolderBase]: For 274450/274450 co-relation queries the response was YES. [2024-06-28 02:23:39,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25032 conditions, 3632 events. 2138/3632 cut-off events. For 274450/274450 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 22768 event pairs, 377 based on Foata normal form. 4/3634 useless extension candidates. Maximal degree in co-relation 24902. Up to 3214 conditions per place. [2024-06-28 02:23:39,715 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 339 selfloop transitions, 52 changer transitions 0/399 dead transitions. [2024-06-28 02:23:39,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 399 transitions, 6173 flow [2024-06-28 02:23:39,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:23:39,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:23:39,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-28 02:23:39,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5762195121951219 [2024-06-28 02:23:39,716 INFO L175 Difference]: Start difference. First operand has 290 places, 369 transitions, 5009 flow. Second operand 8 states and 189 transitions. [2024-06-28 02:23:39,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 399 transitions, 6173 flow [2024-06-28 02:23:40,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 399 transitions, 5951 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-28 02:23:40,501 INFO L231 Difference]: Finished difference. Result has 294 places, 383 transitions, 5139 flow [2024-06-28 02:23:40,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4797, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5139, PETRI_PLACES=294, PETRI_TRANSITIONS=383} [2024-06-28 02:23:40,502 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 252 predicate places. [2024-06-28 02:23:40,502 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 383 transitions, 5139 flow [2024-06-28 02:23:40,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:40,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:40,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:40,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 02:23:40,503 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:40,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:40,503 INFO L85 PathProgramCache]: Analyzing trace with hash 80018466, now seen corresponding path program 10 times [2024-06-28 02:23:40,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:40,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110990363] [2024-06-28 02:23:40,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:40,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:40,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:40,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:40,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:40,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110990363] [2024-06-28 02:23:40,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110990363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:40,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:40,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:40,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72280427] [2024-06-28 02:23:40,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:40,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:40,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:40,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:40,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:40,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:40,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 383 transitions, 5139 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:40,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:40,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:40,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:41,295 INFO L124 PetriNetUnfolderBase]: 2188/3714 cut-off events. [2024-06-28 02:23:41,295 INFO L125 PetriNetUnfolderBase]: For 292880/292883 co-relation queries the response was YES. [2024-06-28 02:23:41,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26302 conditions, 3714 events. 2188/3714 cut-off events. For 292880/292883 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 23377 event pairs, 386 based on Foata normal form. 4/3715 useless extension candidates. Maximal degree in co-relation 26170. Up to 3031 conditions per place. [2024-06-28 02:23:41,334 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 290 selfloop transitions, 133 changer transitions 0/431 dead transitions. [2024-06-28 02:23:41,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 431 transitions, 6806 flow [2024-06-28 02:23:41,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:23:41,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:23:41,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2024-06-28 02:23:41,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6585365853658537 [2024-06-28 02:23:41,336 INFO L175 Difference]: Start difference. First operand has 294 places, 383 transitions, 5139 flow. Second operand 7 states and 189 transitions. [2024-06-28 02:23:41,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 431 transitions, 6806 flow [2024-06-28 02:23:41,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 431 transitions, 6648 flow, removed 55 selfloop flow, removed 5 redundant places. [2024-06-28 02:23:41,955 INFO L231 Difference]: Finished difference. Result has 298 places, 402 transitions, 5705 flow [2024-06-28 02:23:41,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4981, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5705, PETRI_PLACES=298, PETRI_TRANSITIONS=402} [2024-06-28 02:23:41,956 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 256 predicate places. [2024-06-28 02:23:41,956 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 402 transitions, 5705 flow [2024-06-28 02:23:41,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:41,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:41,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:41,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 02:23:41,957 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:41,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:41,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1205570640, now seen corresponding path program 11 times [2024-06-28 02:23:41,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:41,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293395452] [2024-06-28 02:23:41,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:41,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:41,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:42,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:42,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:42,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293395452] [2024-06-28 02:23:42,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293395452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:42,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:42,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:42,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194239966] [2024-06-28 02:23:42,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:42,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:42,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:42,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:42,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:42,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:42,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 402 transitions, 5705 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:42,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:42,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:42,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:42,701 INFO L124 PetriNetUnfolderBase]: 2176/3697 cut-off events. [2024-06-28 02:23:42,701 INFO L125 PetriNetUnfolderBase]: For 296766/296766 co-relation queries the response was YES. [2024-06-28 02:23:42,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26950 conditions, 3697 events. 2176/3697 cut-off events. For 296766/296766 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 23222 event pairs, 377 based on Foata normal form. 4/3699 useless extension candidates. Maximal degree in co-relation 26814. Up to 3021 conditions per place. [2024-06-28 02:23:42,750 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 296 selfloop transitions, 129 changer transitions 0/433 dead transitions. [2024-06-28 02:23:42,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 433 transitions, 6785 flow [2024-06-28 02:23:42,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:23:42,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:23:42,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-28 02:23:42,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6402439024390244 [2024-06-28 02:23:42,752 INFO L175 Difference]: Start difference. First operand has 298 places, 402 transitions, 5705 flow. Second operand 8 states and 210 transitions. [2024-06-28 02:23:42,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 433 transitions, 6785 flow [2024-06-28 02:23:43,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 433 transitions, 6651 flow, removed 55 selfloop flow, removed 2 redundant places. [2024-06-28 02:23:43,740 INFO L231 Difference]: Finished difference. Result has 304 places, 402 transitions, 5858 flow [2024-06-28 02:23:43,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5573, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5858, PETRI_PLACES=304, PETRI_TRANSITIONS=402} [2024-06-28 02:23:43,741 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 262 predicate places. [2024-06-28 02:23:43,741 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 402 transitions, 5858 flow [2024-06-28 02:23:43,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:43,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:43,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:43,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 02:23:43,742 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:43,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:43,742 INFO L85 PathProgramCache]: Analyzing trace with hash 806382934, now seen corresponding path program 12 times [2024-06-28 02:23:43,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:43,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915299666] [2024-06-28 02:23:43,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:43,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:43,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:43,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:43,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915299666] [2024-06-28 02:23:43,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915299666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:43,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:43,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:23:43,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83249058] [2024-06-28 02:23:43,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:43,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:23:43,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:43,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:23:43,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:23:43,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:43,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 402 transitions, 5858 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:43,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:43,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:43,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:44,502 INFO L124 PetriNetUnfolderBase]: 2170/3689 cut-off events. [2024-06-28 02:23:44,502 INFO L125 PetriNetUnfolderBase]: For 284674/284674 co-relation queries the response was YES. [2024-06-28 02:23:44,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26745 conditions, 3689 events. 2170/3689 cut-off events. For 284674/284674 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 23182 event pairs, 377 based on Foata normal form. 2/3689 useless extension candidates. Maximal degree in co-relation 26608. Up to 3274 conditions per place. [2024-06-28 02:23:44,550 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 384 selfloop transitions, 35 changer transitions 0/427 dead transitions. [2024-06-28 02:23:44,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 427 transitions, 6760 flow [2024-06-28 02:23:44,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:23:44,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:23:44,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2024-06-28 02:23:44,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6422764227642277 [2024-06-28 02:23:44,552 INFO L175 Difference]: Start difference. First operand has 304 places, 402 transitions, 5858 flow. Second operand 6 states and 158 transitions. [2024-06-28 02:23:44,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 427 transitions, 6760 flow [2024-06-28 02:23:45,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 427 transitions, 6392 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:45,496 INFO L231 Difference]: Finished difference. Result has 302 places, 402 transitions, 5574 flow [2024-06-28 02:23:45,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5490, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5574, PETRI_PLACES=302, PETRI_TRANSITIONS=402} [2024-06-28 02:23:45,497 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 260 predicate places. [2024-06-28 02:23:45,497 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 402 transitions, 5574 flow [2024-06-28 02:23:45,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 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) [2024-06-28 02:23:45,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:45,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:45,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 02:23:45,497 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:45,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:45,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1966205021, now seen corresponding path program 6 times [2024-06-28 02:23:45,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:45,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624294295] [2024-06-28 02:23:45,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:45,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:45,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:45,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:45,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:45,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624294295] [2024-06-28 02:23:45,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624294295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:45,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:45,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:23:45,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637411956] [2024-06-28 02:23:45,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:45,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:23:45,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:45,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:23:45,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:23:45,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:45,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 402 transitions, 5574 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:23:45,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:45,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:45,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:46,202 INFO L124 PetriNetUnfolderBase]: 2167/3670 cut-off events. [2024-06-28 02:23:46,203 INFO L125 PetriNetUnfolderBase]: For 277070/277070 co-relation queries the response was YES. [2024-06-28 02:23:46,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26234 conditions, 3670 events. 2167/3670 cut-off events. For 277070/277070 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 23058 event pairs, 389 based on Foata normal form. 1/3666 useless extension candidates. Maximal degree in co-relation 26097. Up to 3032 conditions per place. [2024-06-28 02:23:46,248 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 259 selfloop transitions, 155 changer transitions 0/422 dead transitions. [2024-06-28 02:23:46,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 422 transitions, 6754 flow [2024-06-28 02:23:46,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:23:46,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:23:46,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-28 02:23:46,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5884146341463414 [2024-06-28 02:23:46,249 INFO L175 Difference]: Start difference. First operand has 302 places, 402 transitions, 5574 flow. Second operand 8 states and 193 transitions. [2024-06-28 02:23:46,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 422 transitions, 6754 flow [2024-06-28 02:23:47,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 422 transitions, 6622 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 02:23:47,206 INFO L231 Difference]: Finished difference. Result has 303 places, 402 transitions, 5758 flow [2024-06-28 02:23:47,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5442, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5758, PETRI_PLACES=303, PETRI_TRANSITIONS=402} [2024-06-28 02:23:47,207 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 261 predicate places. [2024-06-28 02:23:47,207 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 402 transitions, 5758 flow [2024-06-28 02:23:47,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:23:47,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:47,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:47,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 02:23:47,207 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:47,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:47,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1199609839, now seen corresponding path program 7 times [2024-06-28 02:23:47,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:47,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508507582] [2024-06-28 02:23:47,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:47,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:47,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:47,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:47,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:47,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508507582] [2024-06-28 02:23:47,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508507582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:47,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:47,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:23:47,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303464742] [2024-06-28 02:23:47,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:47,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:23:47,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:47,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:23:47,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:23:47,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:47,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 402 transitions, 5758 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:23:47,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:47,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:47,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:47,927 INFO L124 PetriNetUnfolderBase]: 2172/3679 cut-off events. [2024-06-28 02:23:47,927 INFO L125 PetriNetUnfolderBase]: For 284944/284944 co-relation queries the response was YES. [2024-06-28 02:23:47,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26653 conditions, 3679 events. 2172/3679 cut-off events. For 284944/284944 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 23097 event pairs, 389 based on Foata normal form. 1/3675 useless extension candidates. Maximal degree in co-relation 26516. Up to 3038 conditions per place. [2024-06-28 02:23:47,975 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 249 selfloop transitions, 168 changer transitions 0/425 dead transitions. [2024-06-28 02:23:47,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 425 transitions, 7006 flow [2024-06-28 02:23:47,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:23:47,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:23:47,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-28 02:23:47,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5884146341463414 [2024-06-28 02:23:47,976 INFO L175 Difference]: Start difference. First operand has 303 places, 402 transitions, 5758 flow. Second operand 8 states and 193 transitions. [2024-06-28 02:23:47,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 425 transitions, 7006 flow [2024-06-28 02:23:48,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 425 transitions, 6786 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 02:23:48,904 INFO L231 Difference]: Finished difference. Result has 305 places, 405 transitions, 5938 flow [2024-06-28 02:23:48,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5544, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5938, PETRI_PLACES=305, PETRI_TRANSITIONS=405} [2024-06-28 02:23:48,905 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 263 predicate places. [2024-06-28 02:23:48,905 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 405 transitions, 5938 flow [2024-06-28 02:23:48,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:23:48,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:48,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:48,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 02:23:48,905 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:48,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:48,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1200055309, now seen corresponding path program 8 times [2024-06-28 02:23:48,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:48,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317748884] [2024-06-28 02:23:48,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:48,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:48,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:49,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:49,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:49,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317748884] [2024-06-28 02:23:49,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317748884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:49,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:49,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:23:49,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910173659] [2024-06-28 02:23:49,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:49,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:23:49,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:49,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:23:49,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:23:49,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:49,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 405 transitions, 5938 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:23:49,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:49,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:49,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:49,745 INFO L124 PetriNetUnfolderBase]: 2169/3675 cut-off events. [2024-06-28 02:23:49,746 INFO L125 PetriNetUnfolderBase]: For 289652/289652 co-relation queries the response was YES. [2024-06-28 02:23:49,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26696 conditions, 3675 events. 2169/3675 cut-off events. For 289652/289652 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 23065 event pairs, 389 based on Foata normal form. 1/3671 useless extension candidates. Maximal degree in co-relation 26558. Up to 3035 conditions per place. [2024-06-28 02:23:49,796 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 249 selfloop transitions, 168 changer transitions 0/425 dead transitions. [2024-06-28 02:23:49,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 425 transitions, 7132 flow [2024-06-28 02:23:49,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:23:49,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:23:49,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 02:23:49,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5914634146341463 [2024-06-28 02:23:49,798 INFO L175 Difference]: Start difference. First operand has 305 places, 405 transitions, 5938 flow. Second operand 8 states and 194 transitions. [2024-06-28 02:23:49,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 425 transitions, 7132 flow [2024-06-28 02:23:50,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 425 transitions, 6861 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 02:23:50,789 INFO L231 Difference]: Finished difference. Result has 308 places, 405 transitions, 6009 flow [2024-06-28 02:23:50,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5667, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6009, PETRI_PLACES=308, PETRI_TRANSITIONS=405} [2024-06-28 02:23:50,790 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 266 predicate places. [2024-06-28 02:23:50,790 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 405 transitions, 6009 flow [2024-06-28 02:23:50,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:23:50,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:50,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:50,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 02:23:50,791 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:50,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:50,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1137395903, now seen corresponding path program 9 times [2024-06-28 02:23:50,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:50,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797893152] [2024-06-28 02:23:50,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:50,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:50,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:50,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:50,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797893152] [2024-06-28 02:23:50,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797893152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:50,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:50,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:23:50,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104746640] [2024-06-28 02:23:50,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:50,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:23:50,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:50,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:23:50,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:23:50,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:50,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 405 transitions, 6009 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:23:50,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:50,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:50,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:51,501 INFO L124 PetriNetUnfolderBase]: 2166/3671 cut-off events. [2024-06-28 02:23:51,501 INFO L125 PetriNetUnfolderBase]: For 294037/294037 co-relation queries the response was YES. [2024-06-28 02:23:51,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26696 conditions, 3671 events. 2166/3671 cut-off events. For 294037/294037 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 23043 event pairs, 389 based on Foata normal form. 1/3667 useless extension candidates. Maximal degree in co-relation 26557. Up to 3032 conditions per place. [2024-06-28 02:23:51,547 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 259 selfloop transitions, 158 changer transitions 0/425 dead transitions. [2024-06-28 02:23:51,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 425 transitions, 7207 flow [2024-06-28 02:23:51,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:23:51,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:23:51,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 02:23:51,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5914634146341463 [2024-06-28 02:23:51,549 INFO L175 Difference]: Start difference. First operand has 308 places, 405 transitions, 6009 flow. Second operand 8 states and 194 transitions. [2024-06-28 02:23:51,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 425 transitions, 7207 flow [2024-06-28 02:23:52,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 425 transitions, 6616 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-28 02:23:52,638 INFO L231 Difference]: Finished difference. Result has 307 places, 405 transitions, 5740 flow [2024-06-28 02:23:52,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5418, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5740, PETRI_PLACES=307, PETRI_TRANSITIONS=405} [2024-06-28 02:23:52,638 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 265 predicate places. [2024-06-28 02:23:52,639 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 405 transitions, 5740 flow [2024-06-28 02:23:52,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:23:52,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:52,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:52,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 02:23:52,639 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:52,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:52,640 INFO L85 PathProgramCache]: Analyzing trace with hash -597610787, now seen corresponding path program 10 times [2024-06-28 02:23:52,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:52,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057588583] [2024-06-28 02:23:52,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:52,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:52,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:52,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:52,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057588583] [2024-06-28 02:23:52,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057588583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:52,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:52,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:23:52,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490649233] [2024-06-28 02:23:52,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:52,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:23:52,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:52,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:23:52,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:23:52,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:52,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 405 transitions, 5740 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:23:52,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:52,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:52,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:53,439 INFO L124 PetriNetUnfolderBase]: 2163/3672 cut-off events. [2024-06-28 02:23:53,439 INFO L125 PetriNetUnfolderBase]: For 295046/295046 co-relation queries the response was YES. [2024-06-28 02:23:53,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26397 conditions, 3672 events. 2163/3672 cut-off events. For 295046/295046 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 23089 event pairs, 377 based on Foata normal form. 1/3671 useless extension candidates. Maximal degree in co-relation 26258. Up to 3255 conditions per place. [2024-06-28 02:23:53,480 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 361 selfloop transitions, 53 changer transitions 0/422 dead transitions. [2024-06-28 02:23:53,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 422 transitions, 6768 flow [2024-06-28 02:23:53,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:53,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:53,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 206 transitions. [2024-06-28 02:23:53,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5582655826558266 [2024-06-28 02:23:53,482 INFO L175 Difference]: Start difference. First operand has 307 places, 405 transitions, 5740 flow. Second operand 9 states and 206 transitions. [2024-06-28 02:23:53,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 422 transitions, 6768 flow [2024-06-28 02:23:54,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 422 transitions, 6146 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-28 02:23:54,600 INFO L231 Difference]: Finished difference. Result has 306 places, 405 transitions, 5230 flow [2024-06-28 02:23:54,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5118, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5230, PETRI_PLACES=306, PETRI_TRANSITIONS=405} [2024-06-28 02:23:54,600 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 264 predicate places. [2024-06-28 02:23:54,600 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 405 transitions, 5230 flow [2024-06-28 02:23:54,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:23:54,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:54,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:54,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 02:23:54,601 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:54,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:54,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1920550865, now seen corresponding path program 11 times [2024-06-28 02:23:54,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:54,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87823382] [2024-06-28 02:23:54,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:54,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:54,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:54,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:54,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87823382] [2024-06-28 02:23:54,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87823382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:54,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:54,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:23:54,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213140232] [2024-06-28 02:23:54,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:54,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:23:54,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:54,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:23:54,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:23:54,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:54,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 405 transitions, 5230 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:23:54,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:54,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:54,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:55,342 INFO L124 PetriNetUnfolderBase]: 2160/3668 cut-off events. [2024-06-28 02:23:55,342 INFO L125 PetriNetUnfolderBase]: For 293766/293766 co-relation queries the response was YES. [2024-06-28 02:23:55,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25950 conditions, 3668 events. 2160/3668 cut-off events. For 293766/293766 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 23078 event pairs, 377 based on Foata normal form. 1/3667 useless extension candidates. Maximal degree in co-relation 25812. Up to 3252 conditions per place. [2024-06-28 02:23:55,386 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 360 selfloop transitions, 53 changer transitions 0/421 dead transitions. [2024-06-28 02:23:55,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 421 transitions, 6094 flow [2024-06-28 02:23:55,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:55,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:55,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 205 transitions. [2024-06-28 02:23:55,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-28 02:23:55,387 INFO L175 Difference]: Start difference. First operand has 306 places, 405 transitions, 5230 flow. Second operand 9 states and 205 transitions. [2024-06-28 02:23:55,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 421 transitions, 6094 flow [2024-06-28 02:23:56,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 421 transitions, 5954 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:56,405 INFO L231 Difference]: Finished difference. Result has 307 places, 405 transitions, 5202 flow [2024-06-28 02:23:56,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5090, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5202, PETRI_PLACES=307, PETRI_TRANSITIONS=405} [2024-06-28 02:23:56,406 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 265 predicate places. [2024-06-28 02:23:56,406 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 405 transitions, 5202 flow [2024-06-28 02:23:56,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:23:56,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:56,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:56,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 02:23:56,407 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:56,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:56,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1363806639, now seen corresponding path program 12 times [2024-06-28 02:23:56,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:56,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406924443] [2024-06-28 02:23:56,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:56,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:56,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:56,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:56,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:56,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406924443] [2024-06-28 02:23:56,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406924443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:56,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:56,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:23:56,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073506790] [2024-06-28 02:23:56,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:56,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:23:56,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:56,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:23:56,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:23:56,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:56,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 405 transitions, 5202 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:23:56,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:56,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:56,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:57,169 INFO L124 PetriNetUnfolderBase]: 2157/3664 cut-off events. [2024-06-28 02:23:57,169 INFO L125 PetriNetUnfolderBase]: For 296915/296915 co-relation queries the response was YES. [2024-06-28 02:23:57,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25896 conditions, 3664 events. 2157/3664 cut-off events. For 296915/296915 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 23015 event pairs, 377 based on Foata normal form. 1/3663 useless extension candidates. Maximal degree in co-relation 25757. Up to 3107 conditions per place. [2024-06-28 02:23:57,215 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 312 selfloop transitions, 114 changer transitions 0/434 dead transitions. [2024-06-28 02:23:57,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 434 transitions, 6290 flow [2024-06-28 02:23:57,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:57,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:57,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-28 02:23:57,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5989159891598916 [2024-06-28 02:23:57,216 INFO L175 Difference]: Start difference. First operand has 307 places, 405 transitions, 5202 flow. Second operand 9 states and 221 transitions. [2024-06-28 02:23:57,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 434 transitions, 6290 flow [2024-06-28 02:23:58,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 434 transitions, 6150 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 02:23:58,390 INFO L231 Difference]: Finished difference. Result has 308 places, 405 transitions, 5300 flow [2024-06-28 02:23:58,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5062, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5300, PETRI_PLACES=308, PETRI_TRANSITIONS=405} [2024-06-28 02:23:58,390 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 266 predicate places. [2024-06-28 02:23:58,390 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 405 transitions, 5300 flow [2024-06-28 02:23:58,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:23:58,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:23:58,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:23:58,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 02:23:58,391 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:23:58,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:23:58,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1372520739, now seen corresponding path program 13 times [2024-06-28 02:23:58,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:23:58,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858516420] [2024-06-28 02:23:58,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:23:58,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:23:58,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:23:58,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:23:58,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:23:58,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858516420] [2024-06-28 02:23:58,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858516420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:23:58,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:23:58,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:23:58,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765757944] [2024-06-28 02:23:58,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:23:58,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:23:58,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:23:58,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:23:58,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:23:58,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:23:58,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 405 transitions, 5300 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:23:58,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:23:58,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:23:58,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:23:59,150 INFO L124 PetriNetUnfolderBase]: 2162/3673 cut-off events. [2024-06-28 02:23:59,150 INFO L125 PetriNetUnfolderBase]: For 304288/304288 co-relation queries the response was YES. [2024-06-28 02:23:59,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26216 conditions, 3673 events. 2162/3673 cut-off events. For 304288/304288 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 23096 event pairs, 377 based on Foata normal form. 1/3672 useless extension candidates. Maximal degree in co-relation 26076. Up to 3113 conditions per place. [2024-06-28 02:23:59,198 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 317 selfloop transitions, 112 changer transitions 0/437 dead transitions. [2024-06-28 02:23:59,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 437 transitions, 6448 flow [2024-06-28 02:23:59,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:23:59,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:23:59,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-28 02:23:59,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6016260162601627 [2024-06-28 02:23:59,199 INFO L175 Difference]: Start difference. First operand has 308 places, 405 transitions, 5300 flow. Second operand 9 states and 222 transitions. [2024-06-28 02:23:59,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 437 transitions, 6448 flow [2024-06-28 02:24:00,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 437 transitions, 6159 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 02:24:00,435 INFO L231 Difference]: Finished difference. Result has 308 places, 408 transitions, 5299 flow [2024-06-28 02:24:00,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5019, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5299, PETRI_PLACES=308, PETRI_TRANSITIONS=408} [2024-06-28 02:24:00,436 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 266 predicate places. [2024-06-28 02:24:00,436 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 408 transitions, 5299 flow [2024-06-28 02:24:00,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:24:00,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:00,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:00,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 02:24:00,437 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:24:00,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:00,437 INFO L85 PathProgramCache]: Analyzing trace with hash 811157213, now seen corresponding path program 14 times [2024-06-28 02:24:00,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:00,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731530262] [2024-06-28 02:24:00,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:00,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:00,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:00,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:00,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731530262] [2024-06-28 02:24:00,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731530262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:00,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:00,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:24:00,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128506083] [2024-06-28 02:24:00,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:00,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:24:00,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:00,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:24:00,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:24:00,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:24:00,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 408 transitions, 5299 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:24:00,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:00,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:24:00,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:01,211 INFO L124 PetriNetUnfolderBase]: 2167/3683 cut-off events. [2024-06-28 02:24:01,212 INFO L125 PetriNetUnfolderBase]: For 304662/304665 co-relation queries the response was YES. [2024-06-28 02:24:01,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26228 conditions, 3683 events. 2167/3683 cut-off events. For 304662/304665 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 23190 event pairs, 386 based on Foata normal form. 3/3683 useless extension candidates. Maximal degree in co-relation 26088. Up to 3119 conditions per place. [2024-06-28 02:24:01,260 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 312 selfloop transitions, 116 changer transitions 0/436 dead transitions. [2024-06-28 02:24:01,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 436 transitions, 6435 flow [2024-06-28 02:24:01,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:24:01,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:24:01,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-28 02:24:01,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6036585365853658 [2024-06-28 02:24:01,261 INFO L175 Difference]: Start difference. First operand has 308 places, 408 transitions, 5299 flow. Second operand 8 states and 198 transitions. [2024-06-28 02:24:01,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 436 transitions, 6435 flow [2024-06-28 02:24:02,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 436 transitions, 6233 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 02:24:02,499 INFO L231 Difference]: Finished difference. Result has 309 places, 411 transitions, 5389 flow [2024-06-28 02:24:02,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5102, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5389, PETRI_PLACES=309, PETRI_TRANSITIONS=411} [2024-06-28 02:24:02,500 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 267 predicate places. [2024-06-28 02:24:02,500 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 411 transitions, 5389 flow [2024-06-28 02:24:02,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:24:02,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:02,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:02,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 02:24:02,501 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:24:02,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:02,501 INFO L85 PathProgramCache]: Analyzing trace with hash 87382795, now seen corresponding path program 15 times [2024-06-28 02:24:02,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:02,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097665952] [2024-06-28 02:24:02,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:02,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:02,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:02,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:02,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:02,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097665952] [2024-06-28 02:24:02,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097665952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:02,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:02,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:24:02,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433482630] [2024-06-28 02:24:02,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:02,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:24:02,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:02,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:24:02,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:24:02,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:24:02,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 411 transitions, 5389 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:24:02,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:02,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:24:02,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:03,262 INFO L124 PetriNetUnfolderBase]: 2164/3679 cut-off events. [2024-06-28 02:24:03,262 INFO L125 PetriNetUnfolderBase]: For 301643/301646 co-relation queries the response was YES. [2024-06-28 02:24:03,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26127 conditions, 3679 events. 2164/3679 cut-off events. For 301643/301646 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 23197 event pairs, 386 based on Foata normal form. 3/3679 useless extension candidates. Maximal degree in co-relation 25987. Up to 3116 conditions per place. [2024-06-28 02:24:03,305 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 309 selfloop transitions, 116 changer transitions 0/433 dead transitions. [2024-06-28 02:24:03,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 433 transitions, 6293 flow [2024-06-28 02:24:03,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:24:03,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:24:03,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-06-28 02:24:03,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5772357723577236 [2024-06-28 02:24:03,306 INFO L175 Difference]: Start difference. First operand has 309 places, 411 transitions, 5389 flow. Second operand 9 states and 213 transitions. [2024-06-28 02:24:03,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 433 transitions, 6293 flow [2024-06-28 02:24:04,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 433 transitions, 6071 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 02:24:04,619 INFO L231 Difference]: Finished difference. Result has 313 places, 411 transitions, 5405 flow [2024-06-28 02:24:04,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5167, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5405, PETRI_PLACES=313, PETRI_TRANSITIONS=411} [2024-06-28 02:24:04,619 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 271 predicate places. [2024-06-28 02:24:04,619 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 411 transitions, 5405 flow [2024-06-28 02:24:04,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:24:04,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:04,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:04,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 02:24:04,620 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:24:04,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:04,620 INFO L85 PathProgramCache]: Analyzing trace with hash -613418445, now seen corresponding path program 1 times [2024-06-28 02:24:04,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:04,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198106050] [2024-06-28 02:24:04,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:04,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:04,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:04,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:04,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:04,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198106050] [2024-06-28 02:24:04,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198106050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:04,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:04,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:24:04,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508422733] [2024-06-28 02:24:04,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:04,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:24:04,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:04,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:24:04,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:24:04,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:24:04,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 411 transitions, 5405 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:24:04,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:04,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:24:04,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:05,372 INFO L124 PetriNetUnfolderBase]: 2283/3875 cut-off events. [2024-06-28 02:24:05,372 INFO L125 PetriNetUnfolderBase]: For 398147/398147 co-relation queries the response was YES. [2024-06-28 02:24:05,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28545 conditions, 3875 events. 2283/3875 cut-off events. For 398147/398147 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 24577 event pairs, 379 based on Foata normal form. 12/3882 useless extension candidates. Maximal degree in co-relation 28404. Up to 2750 conditions per place. [2024-06-28 02:24:05,421 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 244 selfloop transitions, 193 changer transitions 0/445 dead transitions. [2024-06-28 02:24:05,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 445 transitions, 6637 flow [2024-06-28 02:24:05,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:24:05,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:24:05,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-28 02:24:05,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6128048780487805 [2024-06-28 02:24:05,422 INFO L175 Difference]: Start difference. First operand has 313 places, 411 transitions, 5405 flow. Second operand 8 states and 201 transitions. [2024-06-28 02:24:05,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 445 transitions, 6637 flow [2024-06-28 02:24:06,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 445 transitions, 6182 flow, removed 11 selfloop flow, removed 11 redundant places. [2024-06-28 02:24:06,361 INFO L231 Difference]: Finished difference. Result has 310 places, 415 transitions, 5429 flow [2024-06-28 02:24:06,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4950, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5429, PETRI_PLACES=310, PETRI_TRANSITIONS=415} [2024-06-28 02:24:06,361 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 268 predicate places. [2024-06-28 02:24:06,361 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 415 transitions, 5429 flow [2024-06-28 02:24:06,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:24:06,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:06,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:06,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 02:24:06,362 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:24:06,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:06,362 INFO L85 PathProgramCache]: Analyzing trace with hash 749067885, now seen corresponding path program 2 times [2024-06-28 02:24:06,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:06,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123835636] [2024-06-28 02:24:06,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:06,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:06,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:06,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:06,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123835636] [2024-06-28 02:24:06,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123835636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:06,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:06,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:24:06,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640744059] [2024-06-28 02:24:06,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:06,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:24:06,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:06,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:24:06,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:24:06,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:24:06,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 415 transitions, 5429 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:24:06,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:06,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:24:06,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:07,132 INFO L124 PetriNetUnfolderBase]: 2339/3966 cut-off events. [2024-06-28 02:24:07,133 INFO L125 PetriNetUnfolderBase]: For 424241/424241 co-relation queries the response was YES. [2024-06-28 02:24:07,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29361 conditions, 3966 events. 2339/3966 cut-off events. For 424241/424241 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 25283 event pairs, 442 based on Foata normal form. 16/3977 useless extension candidates. Maximal degree in co-relation 29220. Up to 3241 conditions per place. [2024-06-28 02:24:07,264 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 255 selfloop transitions, 176 changer transitions 0/439 dead transitions. [2024-06-28 02:24:07,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 439 transitions, 6413 flow [2024-06-28 02:24:07,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:24:07,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:24:07,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 02:24:07,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5914634146341463 [2024-06-28 02:24:07,265 INFO L175 Difference]: Start difference. First operand has 310 places, 415 transitions, 5429 flow. Second operand 8 states and 194 transitions. [2024-06-28 02:24:07,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 439 transitions, 6413 flow [2024-06-28 02:24:08,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 439 transitions, 6164 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-28 02:24:08,218 INFO L231 Difference]: Finished difference. Result has 314 places, 417 transitions, 5588 flow [2024-06-28 02:24:08,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5180, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5588, PETRI_PLACES=314, PETRI_TRANSITIONS=417} [2024-06-28 02:24:08,219 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 272 predicate places. [2024-06-28 02:24:08,219 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 417 transitions, 5588 flow [2024-06-28 02:24:08,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:24:08,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:08,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:08,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 02:24:08,219 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:24:08,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:08,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1199747789, now seen corresponding path program 3 times [2024-06-28 02:24:08,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:08,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314822309] [2024-06-28 02:24:08,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:08,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:08,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:08,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:08,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314822309] [2024-06-28 02:24:08,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314822309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:08,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:08,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:24:08,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333501162] [2024-06-28 02:24:08,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:08,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:24:08,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:08,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:24:08,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:24:08,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:24:08,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 417 transitions, 5588 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:24:08,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:08,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:24:08,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:09,016 INFO L124 PetriNetUnfolderBase]: 2379/4030 cut-off events. [2024-06-28 02:24:09,016 INFO L125 PetriNetUnfolderBase]: For 420303/420303 co-relation queries the response was YES. [2024-06-28 02:24:09,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30180 conditions, 4030 events. 2379/4030 cut-off events. For 420303/420303 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 25746 event pairs, 438 based on Foata normal form. 12/4037 useless extension candidates. Maximal degree in co-relation 30037. Up to 3245 conditions per place. [2024-06-28 02:24:09,067 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 256 selfloop transitions, 180 changer transitions 0/444 dead transitions. [2024-06-28 02:24:09,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 444 transitions, 6604 flow [2024-06-28 02:24:09,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:24:09,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:24:09,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 02:24:09,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.600609756097561 [2024-06-28 02:24:09,068 INFO L175 Difference]: Start difference. First operand has 314 places, 417 transitions, 5588 flow. Second operand 8 states and 197 transitions. [2024-06-28 02:24:09,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 444 transitions, 6604 flow [2024-06-28 02:24:10,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 444 transitions, 6232 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 02:24:10,176 INFO L231 Difference]: Finished difference. Result has 316 places, 419 transitions, 5635 flow [2024-06-28 02:24:10,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5216, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5635, PETRI_PLACES=316, PETRI_TRANSITIONS=419} [2024-06-28 02:24:10,177 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 274 predicate places. [2024-06-28 02:24:10,177 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 419 transitions, 5635 flow [2024-06-28 02:24:10,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:24:10,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:10,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:10,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 02:24:10,178 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:24:10,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:10,178 INFO L85 PathProgramCache]: Analyzing trace with hash 28126859, now seen corresponding path program 4 times [2024-06-28 02:24:10,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:10,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892889358] [2024-06-28 02:24:10,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:10,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:10,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:10,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:10,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:10,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892889358] [2024-06-28 02:24:10,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892889358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:10,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:10,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:24:10,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39880102] [2024-06-28 02:24:10,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:10,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:24:10,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:10,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:24:10,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:24:10,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:24:10,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 419 transitions, 5635 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:24:10,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:10,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:24:10,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:11,039 INFO L124 PetriNetUnfolderBase]: 2435/4127 cut-off events. [2024-06-28 02:24:11,040 INFO L125 PetriNetUnfolderBase]: For 446024/446024 co-relation queries the response was YES. [2024-06-28 02:24:11,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30880 conditions, 4127 events. 2435/4127 cut-off events. For 446024/446024 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 26459 event pairs, 448 based on Foata normal form. 16/4141 useless extension candidates. Maximal degree in co-relation 30736. Up to 3619 conditions per place. [2024-06-28 02:24:11,097 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 378 selfloop transitions, 55 changer transitions 0/441 dead transitions. [2024-06-28 02:24:11,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 441 transitions, 6625 flow [2024-06-28 02:24:11,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:24:11,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:24:11,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2024-06-28 02:24:11,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5636856368563685 [2024-06-28 02:24:11,099 INFO L175 Difference]: Start difference. First operand has 316 places, 419 transitions, 5635 flow. Second operand 9 states and 208 transitions. [2024-06-28 02:24:11,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 441 transitions, 6625 flow [2024-06-28 02:24:12,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 441 transitions, 6234 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 02:24:12,391 INFO L231 Difference]: Finished difference. Result has 319 places, 421 transitions, 5418 flow [2024-06-28 02:24:12,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5244, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5418, PETRI_PLACES=319, PETRI_TRANSITIONS=421} [2024-06-28 02:24:12,394 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 277 predicate places. [2024-06-28 02:24:12,394 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 421 transitions, 5418 flow [2024-06-28 02:24:12,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:24:12,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:12,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:12,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 02:24:12,395 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:24:12,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:12,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1920688815, now seen corresponding path program 5 times [2024-06-28 02:24:12,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:12,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475943282] [2024-06-28 02:24:12,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:12,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:12,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:12,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:12,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:12,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475943282] [2024-06-28 02:24:12,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475943282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:12,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:12,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:24:12,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98272031] [2024-06-28 02:24:12,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:12,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:24:12,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:12,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:24:12,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:24:12,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:24:12,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 421 transitions, 5418 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:24:12,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:12,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:24:12,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:13,304 INFO L124 PetriNetUnfolderBase]: 2521/4265 cut-off events. [2024-06-28 02:24:13,304 INFO L125 PetriNetUnfolderBase]: For 472679/472679 co-relation queries the response was YES. [2024-06-28 02:24:13,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32221 conditions, 4265 events. 2521/4265 cut-off events. For 472679/472679 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 27450 event pairs, 458 based on Foata normal form. 12/4275 useless extension candidates. Maximal degree in co-relation 32076. Up to 3579 conditions per place. [2024-06-28 02:24:13,366 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 378 selfloop transitions, 62 changer transitions 0/448 dead transitions. [2024-06-28 02:24:13,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 448 transitions, 6648 flow [2024-06-28 02:24:13,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:24:13,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:24:13,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-06-28 02:24:13,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5718157181571816 [2024-06-28 02:24:13,368 INFO L175 Difference]: Start difference. First operand has 319 places, 421 transitions, 5418 flow. Second operand 9 states and 211 transitions. [2024-06-28 02:24:13,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 448 transitions, 6648 flow [2024-06-28 02:24:14,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 448 transitions, 6510 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 02:24:14,613 INFO L231 Difference]: Finished difference. Result has 321 places, 424 transitions, 5497 flow [2024-06-28 02:24:14,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5280, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5497, PETRI_PLACES=321, PETRI_TRANSITIONS=424} [2024-06-28 02:24:14,613 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 279 predicate places. [2024-06-28 02:24:14,613 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 424 transitions, 5497 flow [2024-06-28 02:24:14,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:24:14,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:14,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:14,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 02:24:14,614 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:24:14,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:14,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1914963363, now seen corresponding path program 1 times [2024-06-28 02:24:14,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:14,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365228973] [2024-06-28 02:24:14,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:14,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:14,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:14,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:14,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:14,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365228973] [2024-06-28 02:24:14,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365228973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:14,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:14,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:24:14,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886185222] [2024-06-28 02:24:14,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:14,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:24:14,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:14,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:24:14,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:24:14,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:24:14,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 424 transitions, 5497 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:24:14,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:14,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:24:14,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:15,499 INFO L124 PetriNetUnfolderBase]: 2627/4445 cut-off events. [2024-06-28 02:24:15,499 INFO L125 PetriNetUnfolderBase]: For 524105/524105 co-relation queries the response was YES. [2024-06-28 02:24:15,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34256 conditions, 4445 events. 2627/4445 cut-off events. For 524105/524105 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 28777 event pairs, 493 based on Foata normal form. 12/4455 useless extension candidates. Maximal degree in co-relation 34110. Up to 3795 conditions per place. [2024-06-28 02:24:15,556 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 407 selfloop transitions, 37 changer transitions 0/452 dead transitions. [2024-06-28 02:24:15,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 452 transitions, 6745 flow [2024-06-28 02:24:15,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:24:15,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:24:15,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2024-06-28 02:24:15,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5636856368563685 [2024-06-28 02:24:15,557 INFO L175 Difference]: Start difference. First operand has 321 places, 424 transitions, 5497 flow. Second operand 9 states and 208 transitions. [2024-06-28 02:24:15,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 452 transitions, 6745 flow [2024-06-28 02:24:17,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 452 transitions, 6637 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 02:24:17,114 INFO L231 Difference]: Finished difference. Result has 326 places, 428 transitions, 5577 flow [2024-06-28 02:24:17,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5389, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5577, PETRI_PLACES=326, PETRI_TRANSITIONS=428} [2024-06-28 02:24:17,115 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 284 predicate places. [2024-06-28 02:24:17,115 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 428 transitions, 5577 flow [2024-06-28 02:24:17,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:24:17,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:17,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:17,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 02:24:17,116 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:24:17,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:17,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1363796719, now seen corresponding path program 6 times [2024-06-28 02:24:17,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:17,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381544625] [2024-06-28 02:24:17,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:17,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:17,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:17,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:17,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381544625] [2024-06-28 02:24:17,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381544625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:17,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:17,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:24:17,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357177773] [2024-06-28 02:24:17,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:17,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:24:17,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:17,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:24:17,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:24:17,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:24:17,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 428 transitions, 5577 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:24:17,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:17,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:24:17,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:18,057 INFO L124 PetriNetUnfolderBase]: 2670/4526 cut-off events. [2024-06-28 02:24:18,058 INFO L125 PetriNetUnfolderBase]: For 544831/544831 co-relation queries the response was YES. [2024-06-28 02:24:18,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34850 conditions, 4526 events. 2670/4526 cut-off events. For 544831/544831 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 29511 event pairs, 517 based on Foata normal form. 16/4540 useless extension candidates. Maximal degree in co-relation 34701. Up to 3782 conditions per place. [2024-06-28 02:24:18,126 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 330 selfloop transitions, 124 changer transitions 0/462 dead transitions. [2024-06-28 02:24:18,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 462 transitions, 6649 flow [2024-06-28 02:24:18,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:24:18,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:24:18,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-28 02:24:18,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6043360433604336 [2024-06-28 02:24:18,128 INFO L175 Difference]: Start difference. First operand has 326 places, 428 transitions, 5577 flow. Second operand 9 states and 223 transitions. [2024-06-28 02:24:18,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 462 transitions, 6649 flow [2024-06-28 02:24:19,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 462 transitions, 6583 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-28 02:24:19,840 INFO L231 Difference]: Finished difference. Result has 331 places, 430 transitions, 5835 flow [2024-06-28 02:24:19,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5511, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5835, PETRI_PLACES=331, PETRI_TRANSITIONS=430} [2024-06-28 02:24:19,841 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 289 predicate places. [2024-06-28 02:24:19,841 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 430 transitions, 5835 flow [2024-06-28 02:24:19,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:24:19,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:19,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:19,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 02:24:19,842 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:24:19,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:19,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1214159469, now seen corresponding path program 7 times [2024-06-28 02:24:19,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:19,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941302509] [2024-06-28 02:24:19,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:19,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:19,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:19,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:19,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:19,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941302509] [2024-06-28 02:24:19,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941302509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:19,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:19,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:24:19,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277318028] [2024-06-28 02:24:19,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:19,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:24:19,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:19,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:24:19,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:24:20,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:24:20,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 430 transitions, 5835 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:24:20,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:20,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:24:20,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:20,826 INFO L124 PetriNetUnfolderBase]: 2723/4612 cut-off events. [2024-06-28 02:24:20,827 INFO L125 PetriNetUnfolderBase]: For 551329/551329 co-relation queries the response was YES. [2024-06-28 02:24:20,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36060 conditions, 4612 events. 2723/4612 cut-off events. For 551329/551329 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 30061 event pairs, 438 based on Foata normal form. 12/4622 useless extension candidates. Maximal degree in co-relation 35909. Up to 3473 conditions per place. [2024-06-28 02:24:20,891 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 322 selfloop transitions, 141 changer transitions 0/471 dead transitions. [2024-06-28 02:24:20,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 471 transitions, 7133 flow [2024-06-28 02:24:20,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:24:20,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:24:20,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-06-28 02:24:20,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6233062330623306 [2024-06-28 02:24:20,893 INFO L175 Difference]: Start difference. First operand has 331 places, 430 transitions, 5835 flow. Second operand 9 states and 230 transitions. [2024-06-28 02:24:20,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 471 transitions, 7133 flow [2024-06-28 02:24:22,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 471 transitions, 6859 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 02:24:22,849 INFO L231 Difference]: Finished difference. Result has 333 places, 432 transitions, 5913 flow [2024-06-28 02:24:22,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5561, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5913, PETRI_PLACES=333, PETRI_TRANSITIONS=432} [2024-06-28 02:24:22,850 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 291 predicate places. [2024-06-28 02:24:22,850 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 432 transitions, 5913 flow [2024-06-28 02:24:22,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:24:22,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:22,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:22,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 02:24:22,851 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:24:22,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:22,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1358219137, now seen corresponding path program 2 times [2024-06-28 02:24:22,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:22,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599345002] [2024-06-28 02:24:22,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:22,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:22,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:22,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:22,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:22,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599345002] [2024-06-28 02:24:22,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599345002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:22,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:22,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:24:22,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844818090] [2024-06-28 02:24:22,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:22,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:24:22,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:22,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:24:22,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:24:23,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:24:23,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 432 transitions, 5913 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:24:23,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:23,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:24:23,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:23,856 INFO L124 PetriNetUnfolderBase]: 2905/4905 cut-off events. [2024-06-28 02:24:23,856 INFO L125 PetriNetUnfolderBase]: For 609911/609911 co-relation queries the response was YES. [2024-06-28 02:24:23,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39154 conditions, 4905 events. 2905/4905 cut-off events. For 609911/609911 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 32275 event pairs, 534 based on Foata normal form. 12/4915 useless extension candidates. Maximal degree in co-relation 39002. Up to 3999 conditions per place. [2024-06-28 02:24:23,923 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 412 selfloop transitions, 49 changer transitions 0/469 dead transitions. [2024-06-28 02:24:23,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 469 transitions, 7387 flow [2024-06-28 02:24:23,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:24:23,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:24:23,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-28 02:24:23,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5762195121951219 [2024-06-28 02:24:23,924 INFO L175 Difference]: Start difference. First operand has 333 places, 432 transitions, 5913 flow. Second operand 8 states and 189 transitions. [2024-06-28 02:24:23,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 469 transitions, 7387 flow [2024-06-28 02:24:25,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 469 transitions, 7166 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-28 02:24:25,792 INFO L231 Difference]: Finished difference. Result has 338 places, 443 transitions, 6084 flow [2024-06-28 02:24:25,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5704, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6084, PETRI_PLACES=338, PETRI_TRANSITIONS=443} [2024-06-28 02:24:25,792 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 296 predicate places. [2024-06-28 02:24:25,793 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 443 transitions, 6084 flow [2024-06-28 02:24:25,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:24:25,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:25,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:25,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 02:24:25,793 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:24:25,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:25,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1411749217, now seen corresponding path program 3 times [2024-06-28 02:24:25,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:25,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566499905] [2024-06-28 02:24:25,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:25,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:25,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:25,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:25,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:25,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566499905] [2024-06-28 02:24:25,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566499905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:25,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:25,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:24:25,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980567935] [2024-06-28 02:24:25,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:25,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:24:25,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:25,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:24:25,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:24:25,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:24:25,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 443 transitions, 6084 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:24:25,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:25,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:24:25,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:26,987 INFO L124 PetriNetUnfolderBase]: 3024/5117 cut-off events. [2024-06-28 02:24:26,987 INFO L125 PetriNetUnfolderBase]: For 662720/662720 co-relation queries the response was YES. [2024-06-28 02:24:27,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41892 conditions, 5117 events. 3024/5117 cut-off events. For 662720/662720 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 34081 event pairs, 467 based on Foata normal form. 12/5127 useless extension candidates. Maximal degree in co-relation 41736. Up to 3727 conditions per place. [2024-06-28 02:24:27,050 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 372 selfloop transitions, 103 changer transitions 0/483 dead transitions. [2024-06-28 02:24:27,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 483 transitions, 7460 flow [2024-06-28 02:24:27,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:24:27,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:24:27,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-28 02:24:27,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6310975609756098 [2024-06-28 02:24:27,052 INFO L175 Difference]: Start difference. First operand has 338 places, 443 transitions, 6084 flow. Second operand 8 states and 207 transitions. [2024-06-28 02:24:27,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 483 transitions, 7460 flow [2024-06-28 02:24:29,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 483 transitions, 7368 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-06-28 02:24:29,490 INFO L231 Difference]: Finished difference. Result has 344 places, 448 transitions, 6392 flow [2024-06-28 02:24:29,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6002, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6392, PETRI_PLACES=344, PETRI_TRANSITIONS=448} [2024-06-28 02:24:29,491 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 302 predicate places. [2024-06-28 02:24:29,491 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 448 transitions, 6392 flow [2024-06-28 02:24:29,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:24:29,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:29,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:24:29,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 02:24:29,491 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:24:29,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:29,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1677446497, now seen corresponding path program 4 times [2024-06-28 02:24:29,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:29,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290186024] [2024-06-28 02:24:29,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:29,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:29,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:29,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:29,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290186024] [2024-06-28 02:24:29,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290186024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:29,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:29,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:24:29,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071118709] [2024-06-28 02:24:29,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:29,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:24:29,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:29,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:24:29,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:24:29,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:24:29,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 448 transitions, 6392 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:24:29,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:29,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:24:29,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:30,560 INFO L124 PetriNetUnfolderBase]: 3084/5232 cut-off events. [2024-06-28 02:24:30,560 INFO L125 PetriNetUnfolderBase]: For 670756/670759 co-relation queries the response was YES. [2024-06-28 02:24:30,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43430 conditions, 5232 events. 3084/5232 cut-off events. For 670756/670759 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 35118 event pairs, 494 based on Foata normal form. 14/5243 useless extension candidates. Maximal degree in co-relation 43271. Up to 3674 conditions per place. [2024-06-28 02:24:30,638 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 381 selfloop transitions, 97 changer transitions 0/486 dead transitions. [2024-06-28 02:24:30,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 486 transitions, 7964 flow [2024-06-28 02:24:30,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:24:30,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:24:30,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-06-28 02:24:30,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6445993031358885 [2024-06-28 02:24:30,639 INFO L175 Difference]: Start difference. First operand has 344 places, 448 transitions, 6392 flow. Second operand 7 states and 185 transitions. [2024-06-28 02:24:30,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 486 transitions, 7964 flow [2024-06-28 02:24:33,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 486 transitions, 7809 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-28 02:24:33,451 INFO L231 Difference]: Finished difference. Result has 349 places, 454 transitions, 6630 flow [2024-06-28 02:24:33,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6249, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6630, PETRI_PLACES=349, PETRI_TRANSITIONS=454} [2024-06-28 02:24:33,452 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 307 predicate places. [2024-06-28 02:24:33,452 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 454 transitions, 6630 flow [2024-06-28 02:24:33,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:24:33,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:33,452 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] [2024-06-28 02:24:33,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 02:24:33,452 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:24:33,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:33,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1491753271, now seen corresponding path program 1 times [2024-06-28 02:24:33,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:33,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441240607] [2024-06-28 02:24:33,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:33,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:33,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:33,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:33,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:33,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441240607] [2024-06-28 02:24:33,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441240607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:33,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:33,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:24:33,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52649344] [2024-06-28 02:24:33,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:33,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:24:33,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:33,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:24:33,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:24:33,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:24:33,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 454 transitions, 6630 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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) [2024-06-28 02:24:33,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:33,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:24:33,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:34,621 INFO L124 PetriNetUnfolderBase]: 3105/5257 cut-off events. [2024-06-28 02:24:34,621 INFO L125 PetriNetUnfolderBase]: For 634806/634806 co-relation queries the response was YES. [2024-06-28 02:24:34,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44413 conditions, 5257 events. 3105/5257 cut-off events. For 634806/634806 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 35375 event pairs, 646 based on Foata normal form. 1/5250 useless extension candidates. Maximal degree in co-relation 44250. Up to 4582 conditions per place. [2024-06-28 02:24:34,705 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 367 selfloop transitions, 105 changer transitions 0/480 dead transitions. [2024-06-28 02:24:34,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 480 transitions, 7940 flow [2024-06-28 02:24:34,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:24:34,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:24:34,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-06-28 02:24:34,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6260162601626016 [2024-06-28 02:24:34,706 INFO L175 Difference]: Start difference. First operand has 349 places, 454 transitions, 6630 flow. Second operand 6 states and 154 transitions. [2024-06-28 02:24:34,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 480 transitions, 7940 flow [2024-06-28 02:24:37,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 480 transitions, 7801 flow, removed 28 selfloop flow, removed 2 redundant places. [2024-06-28 02:24:37,505 INFO L231 Difference]: Finished difference. Result has 354 places, 463 transitions, 6910 flow [2024-06-28 02:24:37,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6491, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6910, PETRI_PLACES=354, PETRI_TRANSITIONS=463} [2024-06-28 02:24:37,505 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 312 predicate places. [2024-06-28 02:24:37,505 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 463 transitions, 6910 flow [2024-06-28 02:24:37,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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) [2024-06-28 02:24:37,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:37,506 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] [2024-06-28 02:24:37,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 02:24:37,506 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:24:37,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:37,506 INFO L85 PathProgramCache]: Analyzing trace with hash -552932255, now seen corresponding path program 1 times [2024-06-28 02:24:37,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:37,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5782386] [2024-06-28 02:24:37,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:37,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:37,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:37,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:37,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:37,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5782386] [2024-06-28 02:24:37,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5782386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:37,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:37,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:24:37,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576354764] [2024-06-28 02:24:37,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:37,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:24:37,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:37,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:24:37,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:24:37,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:24:37,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 463 transitions, 6910 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:24:37,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:37,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:24:37,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:38,621 INFO L124 PetriNetUnfolderBase]: 3118/5289 cut-off events. [2024-06-28 02:24:38,621 INFO L125 PetriNetUnfolderBase]: For 651702/651702 co-relation queries the response was YES. [2024-06-28 02:24:38,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44822 conditions, 5289 events. 3118/5289 cut-off events. For 651702/651702 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 35599 event pairs, 627 based on Foata normal form. 1/5288 useless extension candidates. Maximal degree in co-relation 44656. Up to 4703 conditions per place. [2024-06-28 02:24:38,702 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 428 selfloop transitions, 61 changer transitions 0/497 dead transitions. [2024-06-28 02:24:38,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 497 transitions, 8264 flow [2024-06-28 02:24:38,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:24:38,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:24:38,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 02:24:38,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.600609756097561 [2024-06-28 02:24:38,703 INFO L175 Difference]: Start difference. First operand has 354 places, 463 transitions, 6910 flow. Second operand 8 states and 197 transitions. [2024-06-28 02:24:38,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 497 transitions, 8264 flow [2024-06-28 02:24:41,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 497 transitions, 8114 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-28 02:24:41,729 INFO L231 Difference]: Finished difference. Result has 358 places, 469 transitions, 7016 flow [2024-06-28 02:24:41,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6762, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7016, PETRI_PLACES=358, PETRI_TRANSITIONS=469} [2024-06-28 02:24:41,730 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 316 predicate places. [2024-06-28 02:24:41,730 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 469 transitions, 7016 flow [2024-06-28 02:24:41,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:24:41,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:41,730 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] [2024-06-28 02:24:41,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 02:24:41,730 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:24:41,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:41,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1409757315, now seen corresponding path program 2 times [2024-06-28 02:24:41,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:41,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809121077] [2024-06-28 02:24:41,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:41,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:41,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:41,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:41,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809121077] [2024-06-28 02:24:41,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809121077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:41,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:41,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:24:41,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280850657] [2024-06-28 02:24:41,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:41,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:24:41,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:41,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:24:41,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:24:41,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:24:41,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 469 transitions, 7016 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:24:41,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:41,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:24:41,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:42,900 INFO L124 PetriNetUnfolderBase]: 3123/5298 cut-off events. [2024-06-28 02:24:42,900 INFO L125 PetriNetUnfolderBase]: For 653931/653931 co-relation queries the response was YES. [2024-06-28 02:24:42,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45227 conditions, 5298 events. 3123/5298 cut-off events. For 653931/653931 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 35666 event pairs, 626 based on Foata normal form. 1/5297 useless extension candidates. Maximal degree in co-relation 45061. Up to 4752 conditions per place. [2024-06-28 02:24:42,987 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 448 selfloop transitions, 43 changer transitions 0/499 dead transitions. [2024-06-28 02:24:42,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 499 transitions, 8116 flow [2024-06-28 02:24:42,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:24:42,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:24:42,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-28 02:24:42,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5853658536585366 [2024-06-28 02:24:42,989 INFO L175 Difference]: Start difference. First operand has 358 places, 469 transitions, 7016 flow. Second operand 8 states and 192 transitions. [2024-06-28 02:24:42,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 499 transitions, 8116 flow [2024-06-28 02:24:46,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 499 transitions, 7906 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-28 02:24:46,186 INFO L231 Difference]: Finished difference. Result has 361 places, 472 transitions, 6954 flow [2024-06-28 02:24:46,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6806, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6954, PETRI_PLACES=361, PETRI_TRANSITIONS=472} [2024-06-28 02:24:46,187 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 319 predicate places. [2024-06-28 02:24:46,187 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 472 transitions, 6954 flow [2024-06-28 02:24:46,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:24:46,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:46,187 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] [2024-06-28 02:24:46,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 02:24:46,187 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:24:46,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:46,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1232625609, now seen corresponding path program 2 times [2024-06-28 02:24:46,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:46,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082440297] [2024-06-28 02:24:46,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:46,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:46,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:46,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:46,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:46,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082440297] [2024-06-28 02:24:46,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082440297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:46,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:46,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:24:46,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126117370] [2024-06-28 02:24:46,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:46,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:24:46,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:46,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:24:46,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:24:46,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:24:46,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 472 transitions, 6954 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:24:46,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:46,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:24:46,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:47,320 INFO L124 PetriNetUnfolderBase]: 3141/5325 cut-off events. [2024-06-28 02:24:47,320 INFO L125 PetriNetUnfolderBase]: For 670995/670995 co-relation queries the response was YES. [2024-06-28 02:24:47,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45596 conditions, 5325 events. 3141/5325 cut-off events. For 670995/670995 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 35847 event pairs, 627 based on Foata normal form. 1/5324 useless extension candidates. Maximal degree in co-relation 45430. Up to 4729 conditions per place. [2024-06-28 02:24:47,399 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 433 selfloop transitions, 71 changer transitions 0/512 dead transitions. [2024-06-28 02:24:47,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 512 transitions, 8543 flow [2024-06-28 02:24:47,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:24:47,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:24:47,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 239 transitions. [2024-06-28 02:24:47,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5829268292682926 [2024-06-28 02:24:47,401 INFO L175 Difference]: Start difference. First operand has 361 places, 472 transitions, 6954 flow. Second operand 10 states and 239 transitions. [2024-06-28 02:24:47,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 512 transitions, 8543 flow [2024-06-28 02:24:50,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 512 transitions, 8423 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 02:24:50,627 INFO L231 Difference]: Finished difference. Result has 364 places, 481 transitions, 7111 flow [2024-06-28 02:24:50,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6834, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7111, PETRI_PLACES=364, PETRI_TRANSITIONS=481} [2024-06-28 02:24:50,627 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 322 predicate places. [2024-06-28 02:24:50,628 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 481 transitions, 7111 flow [2024-06-28 02:24:50,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:24:50,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:50,628 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] [2024-06-28 02:24:50,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 02:24:50,628 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:24:50,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:50,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1232625795, now seen corresponding path program 3 times [2024-06-28 02:24:50,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:50,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105409421] [2024-06-28 02:24:50,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:50,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:50,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:50,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:50,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:50,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105409421] [2024-06-28 02:24:50,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105409421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:50,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:50,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:24:50,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628367037] [2024-06-28 02:24:50,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:50,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:24:50,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:50,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:24:50,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:24:50,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:24:50,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 481 transitions, 7111 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:24:50,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:50,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:24:50,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:51,813 INFO L124 PetriNetUnfolderBase]: 3146/5334 cut-off events. [2024-06-28 02:24:51,813 INFO L125 PetriNetUnfolderBase]: For 684277/684277 co-relation queries the response was YES. [2024-06-28 02:24:51,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45837 conditions, 5334 events. 3146/5334 cut-off events. For 684277/684277 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 35915 event pairs, 626 based on Foata normal form. 1/5333 useless extension candidates. Maximal degree in co-relation 45670. Up to 4781 conditions per place. [2024-06-28 02:24:51,900 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 459 selfloop transitions, 47 changer transitions 0/514 dead transitions. [2024-06-28 02:24:51,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 514 transitions, 8253 flow [2024-06-28 02:24:51,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:24:51,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:24:51,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 249 transitions. [2024-06-28 02:24:51,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5521064301552107 [2024-06-28 02:24:51,902 INFO L175 Difference]: Start difference. First operand has 364 places, 481 transitions, 7111 flow. Second operand 11 states and 249 transitions. [2024-06-28 02:24:51,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 514 transitions, 8253 flow [2024-06-28 02:24:55,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 514 transitions, 8063 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 02:24:55,336 INFO L231 Difference]: Finished difference. Result has 369 places, 484 transitions, 7083 flow [2024-06-28 02:24:55,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6921, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7083, PETRI_PLACES=369, PETRI_TRANSITIONS=484} [2024-06-28 02:24:55,337 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 327 predicate places. [2024-06-28 02:24:55,337 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 484 transitions, 7083 flow [2024-06-28 02:24:55,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:24:55,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:55,337 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] [2024-06-28 02:24:55,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 02:24:55,338 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:24:55,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:55,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1232388459, now seen corresponding path program 3 times [2024-06-28 02:24:55,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:55,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893130003] [2024-06-28 02:24:55,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:55,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:55,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:55,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:55,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893130003] [2024-06-28 02:24:55,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893130003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:55,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:55,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:24:55,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620530229] [2024-06-28 02:24:55,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:55,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:24:55,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:55,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:24:55,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:24:55,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:24:55,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 484 transitions, 7083 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:24:55,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:55,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:24:55,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:24:56,707 INFO L124 PetriNetUnfolderBase]: 3143/5330 cut-off events. [2024-06-28 02:24:56,708 INFO L125 PetriNetUnfolderBase]: For 692654/692654 co-relation queries the response was YES. [2024-06-28 02:24:56,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45764 conditions, 5330 events. 3143/5330 cut-off events. For 692654/692654 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 35910 event pairs, 627 based on Foata normal form. 1/5329 useless extension candidates. Maximal degree in co-relation 45596. Up to 4733 conditions per place. [2024-06-28 02:24:56,778 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 434 selfloop transitions, 73 changer transitions 0/515 dead transitions. [2024-06-28 02:24:56,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 515 transitions, 8365 flow [2024-06-28 02:24:56,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:24:56,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:24:56,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 254 transitions. [2024-06-28 02:24:56,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5631929046563193 [2024-06-28 02:24:56,779 INFO L175 Difference]: Start difference. First operand has 369 places, 484 transitions, 7083 flow. Second operand 11 states and 254 transitions. [2024-06-28 02:24:56,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 515 transitions, 8365 flow [2024-06-28 02:24:59,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 515 transitions, 8219 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-28 02:24:59,745 INFO L231 Difference]: Finished difference. Result has 371 places, 484 transitions, 7089 flow [2024-06-28 02:24:59,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6937, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7089, PETRI_PLACES=371, PETRI_TRANSITIONS=484} [2024-06-28 02:24:59,746 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 329 predicate places. [2024-06-28 02:24:59,746 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 484 transitions, 7089 flow [2024-06-28 02:24:59,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:24:59,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:24:59,746 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] [2024-06-28 02:24:59,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 02:24:59,747 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:24:59,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:24:59,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1498415145, now seen corresponding path program 1 times [2024-06-28 02:24:59,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:24:59,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565348082] [2024-06-28 02:24:59,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:24:59,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:24:59,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:24:59,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:24:59,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:24:59,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565348082] [2024-06-28 02:24:59,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565348082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:24:59,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:24:59,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:24:59,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846499028] [2024-06-28 02:24:59,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:24:59,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:24:59,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:24:59,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:24:59,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:24:59,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:24:59,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 484 transitions, 7089 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:24:59,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:24:59,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:24:59,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:00,970 INFO L124 PetriNetUnfolderBase]: 3223/5472 cut-off events. [2024-06-28 02:25:00,970 INFO L125 PetriNetUnfolderBase]: For 730630/730630 co-relation queries the response was YES. [2024-06-28 02:25:01,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46629 conditions, 5472 events. 3223/5472 cut-off events. For 730630/730630 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 37121 event pairs, 573 based on Foata normal form. 6/5476 useless extension candidates. Maximal degree in co-relation 46460. Up to 4679 conditions per place. [2024-06-28 02:25:01,056 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 461 selfloop transitions, 55 changer transitions 0/524 dead transitions. [2024-06-28 02:25:01,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 524 transitions, 8507 flow [2024-06-28 02:25:01,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:25:01,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:25:01,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-28 02:25:01,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6097560975609756 [2024-06-28 02:25:01,057 INFO L175 Difference]: Start difference. First operand has 371 places, 484 transitions, 7089 flow. Second operand 8 states and 200 transitions. [2024-06-28 02:25:01,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 524 transitions, 8507 flow [2024-06-28 02:25:04,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 524 transitions, 8351 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 02:25:04,309 INFO L231 Difference]: Finished difference. Result has 370 places, 488 transitions, 7136 flow [2024-06-28 02:25:04,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6933, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7136, PETRI_PLACES=370, PETRI_TRANSITIONS=488} [2024-06-28 02:25:04,309 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 328 predicate places. [2024-06-28 02:25:04,310 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 488 transitions, 7136 flow [2024-06-28 02:25:04,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:25:04,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:04,310 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] [2024-06-28 02:25:04,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 02:25:04,310 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:25:04,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:04,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1314593851, now seen corresponding path program 2 times [2024-06-28 02:25:04,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:04,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630463445] [2024-06-28 02:25:04,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:04,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:04,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:04,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:04,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630463445] [2024-06-28 02:25:04,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630463445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:04,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:04,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:25:04,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562892194] [2024-06-28 02:25:04,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:04,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:25:04,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:04,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:25:04,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:25:04,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:25:04,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 488 transitions, 7136 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:25:04,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:04,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:25:04,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:05,528 INFO L124 PetriNetUnfolderBase]: 3271/5552 cut-off events. [2024-06-28 02:25:05,528 INFO L125 PetriNetUnfolderBase]: For 746675/746675 co-relation queries the response was YES. [2024-06-28 02:25:05,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47455 conditions, 5552 events. 3271/5552 cut-off events. For 746675/746675 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 37739 event pairs, 653 based on Foata normal form. 6/5556 useless extension candidates. Maximal degree in co-relation 47284. Up to 4918 conditions per place. [2024-06-28 02:25:05,611 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 465 selfloop transitions, 48 changer transitions 0/521 dead transitions. [2024-06-28 02:25:05,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 521 transitions, 8320 flow [2024-06-28 02:25:05,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:25:05,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:25:05,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 02:25:05,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5975609756097561 [2024-06-28 02:25:05,612 INFO L175 Difference]: Start difference. First operand has 370 places, 488 transitions, 7136 flow. Second operand 8 states and 196 transitions. [2024-06-28 02:25:05,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 521 transitions, 8320 flow [2024-06-28 02:25:09,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 521 transitions, 8213 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 02:25:09,279 INFO L231 Difference]: Finished difference. Result has 374 places, 490 transitions, 7179 flow [2024-06-28 02:25:09,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7031, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7179, PETRI_PLACES=374, PETRI_TRANSITIONS=490} [2024-06-28 02:25:09,280 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 332 predicate places. [2024-06-28 02:25:09,280 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 490 transitions, 7179 flow [2024-06-28 02:25:09,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:25:09,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:09,281 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] [2024-06-28 02:25:09,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 02:25:09,281 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:25:09,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:09,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1173546649, now seen corresponding path program 4 times [2024-06-28 02:25:09,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:09,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457642648] [2024-06-28 02:25:09,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:09,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:09,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:09,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:09,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:09,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457642648] [2024-06-28 02:25:09,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457642648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:09,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:09,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:25:09,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354392700] [2024-06-28 02:25:09,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:09,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:25:09,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:09,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:25:09,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:25:09,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:25:09,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 490 transitions, 7179 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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) [2024-06-28 02:25:09,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:09,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:25:09,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:10,443 INFO L124 PetriNetUnfolderBase]: 3300/5586 cut-off events. [2024-06-28 02:25:10,443 INFO L125 PetriNetUnfolderBase]: For 752099/752099 co-relation queries the response was YES. [2024-06-28 02:25:10,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48093 conditions, 5586 events. 3300/5586 cut-off events. For 752099/752099 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 38062 event pairs, 677 based on Foata normal form. 1/5579 useless extension candidates. Maximal degree in co-relation 47920. Up to 4742 conditions per place. [2024-06-28 02:25:10,528 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 355 selfloop transitions, 162 changer transitions 0/525 dead transitions. [2024-06-28 02:25:10,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 525 transitions, 9060 flow [2024-06-28 02:25:10,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:25:10,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:25:10,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 02:25:10,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6167247386759582 [2024-06-28 02:25:10,529 INFO L175 Difference]: Start difference. First operand has 374 places, 490 transitions, 7179 flow. Second operand 7 states and 177 transitions. [2024-06-28 02:25:10,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 525 transitions, 9060 flow [2024-06-28 02:25:13,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 525 transitions, 8958 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 02:25:13,787 INFO L231 Difference]: Finished difference. Result has 376 places, 502 transitions, 7604 flow [2024-06-28 02:25:13,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7077, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7604, PETRI_PLACES=376, PETRI_TRANSITIONS=502} [2024-06-28 02:25:13,787 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 334 predicate places. [2024-06-28 02:25:13,788 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 502 transitions, 7604 flow [2024-06-28 02:25:13,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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) [2024-06-28 02:25:13,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:13,788 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] [2024-06-28 02:25:13,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 02:25:13,788 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:25:13,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:13,789 INFO L85 PathProgramCache]: Analyzing trace with hash 421330035, now seen corresponding path program 5 times [2024-06-28 02:25:13,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:13,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590636150] [2024-06-28 02:25:13,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:13,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:13,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:13,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:13,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:13,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590636150] [2024-06-28 02:25:13,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590636150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:13,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:13,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:25:13,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736181268] [2024-06-28 02:25:13,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:13,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:25:13,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:13,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:25:13,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:25:13,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:25:13,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 502 transitions, 7604 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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) [2024-06-28 02:25:13,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:13,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:25:13,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:14,963 INFO L124 PetriNetUnfolderBase]: 3313/5608 cut-off events. [2024-06-28 02:25:14,964 INFO L125 PetriNetUnfolderBase]: For 772163/772163 co-relation queries the response was YES. [2024-06-28 02:25:15,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48737 conditions, 5608 events. 3313/5608 cut-off events. For 772163/772163 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 38182 event pairs, 677 based on Foata normal form. 1/5601 useless extension candidates. Maximal degree in co-relation 48563. Up to 4757 conditions per place. [2024-06-28 02:25:15,051 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 355 selfloop transitions, 165 changer transitions 0/528 dead transitions. [2024-06-28 02:25:15,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 528 transitions, 9398 flow [2024-06-28 02:25:15,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:25:15,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:25:15,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 02:25:15,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6097560975609756 [2024-06-28 02:25:15,053 INFO L175 Difference]: Start difference. First operand has 376 places, 502 transitions, 7604 flow. Second operand 7 states and 175 transitions. [2024-06-28 02:25:15,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 528 transitions, 9398 flow [2024-06-28 02:25:18,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 528 transitions, 8875 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-06-28 02:25:18,479 INFO L231 Difference]: Finished difference. Result has 378 places, 508 transitions, 7523 flow [2024-06-28 02:25:18,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7115, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7523, PETRI_PLACES=378, PETRI_TRANSITIONS=508} [2024-06-28 02:25:18,480 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 336 predicate places. [2024-06-28 02:25:18,480 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 508 transitions, 7523 flow [2024-06-28 02:25:18,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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) [2024-06-28 02:25:18,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:18,481 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] [2024-06-28 02:25:18,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 02:25:18,481 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:25:18,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:18,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1255514983, now seen corresponding path program 6 times [2024-06-28 02:25:18,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:18,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847296054] [2024-06-28 02:25:18,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:18,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:18,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:18,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:18,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847296054] [2024-06-28 02:25:18,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847296054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:18,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:18,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:25:18,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203478300] [2024-06-28 02:25:18,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:18,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:25:18,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:18,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:25:18,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:25:18,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:25:18,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 508 transitions, 7523 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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) [2024-06-28 02:25:18,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:18,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:25:18,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:19,695 INFO L124 PetriNetUnfolderBase]: 3310/5604 cut-off events. [2024-06-28 02:25:19,695 INFO L125 PetriNetUnfolderBase]: For 779519/779519 co-relation queries the response was YES. [2024-06-28 02:25:19,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48617 conditions, 5604 events. 3310/5604 cut-off events. For 779519/779519 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 38210 event pairs, 677 based on Foata normal form. 1/5597 useless extension candidates. Maximal degree in co-relation 48443. Up to 4754 conditions per place. [2024-06-28 02:25:19,778 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 366 selfloop transitions, 157 changer transitions 0/531 dead transitions. [2024-06-28 02:25:19,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 531 transitions, 9231 flow [2024-06-28 02:25:19,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:25:19,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:25:19,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 02:25:19,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6132404181184669 [2024-06-28 02:25:19,779 INFO L175 Difference]: Start difference. First operand has 378 places, 508 transitions, 7523 flow. Second operand 7 states and 176 transitions. [2024-06-28 02:25:19,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 531 transitions, 9231 flow [2024-06-28 02:25:23,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 531 transitions, 8968 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-28 02:25:23,075 INFO L231 Difference]: Finished difference. Result has 382 places, 508 transitions, 7580 flow [2024-06-28 02:25:23,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7260, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7580, PETRI_PLACES=382, PETRI_TRANSITIONS=508} [2024-06-28 02:25:23,075 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 340 predicate places. [2024-06-28 02:25:23,076 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 508 transitions, 7580 flow [2024-06-28 02:25:23,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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) [2024-06-28 02:25:23,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:23,076 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] [2024-06-28 02:25:23,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 02:25:23,076 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:25:23,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:23,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1909289285, now seen corresponding path program 4 times [2024-06-28 02:25:23,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:23,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801505894] [2024-06-28 02:25:23,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:23,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:23,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:23,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:23,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:23,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801505894] [2024-06-28 02:25:23,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801505894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:23,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:23,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:25:23,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853227068] [2024-06-28 02:25:23,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:23,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:25:23,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:23,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:25:23,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:25:23,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:25:23,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 508 transitions, 7580 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:25:23,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:23,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:25:23,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:24,232 INFO L124 PetriNetUnfolderBase]: 3331/5629 cut-off events. [2024-06-28 02:25:24,232 INFO L125 PetriNetUnfolderBase]: For 807024/807027 co-relation queries the response was YES. [2024-06-28 02:25:24,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49272 conditions, 5629 events. 3331/5629 cut-off events. For 807024/807027 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 38324 event pairs, 735 based on Foata normal form. 1/5609 useless extension candidates. Maximal degree in co-relation 49097. Up to 4403 conditions per place. [2024-06-28 02:25:24,318 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 270 selfloop transitions, 271 changer transitions 0/549 dead transitions. [2024-06-28 02:25:24,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 549 transitions, 9806 flow [2024-06-28 02:25:24,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:25:24,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:25:24,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 02:25:24,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-28 02:25:24,320 INFO L175 Difference]: Start difference. First operand has 382 places, 508 transitions, 7580 flow. Second operand 8 states and 205 transitions. [2024-06-28 02:25:24,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 549 transitions, 9806 flow [2024-06-28 02:25:28,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 549 transitions, 9234 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-28 02:25:28,414 INFO L231 Difference]: Finished difference. Result has 382 places, 521 transitions, 7824 flow [2024-06-28 02:25:28,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7008, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=262, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7824, PETRI_PLACES=382, PETRI_TRANSITIONS=521} [2024-06-28 02:25:28,415 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 340 predicate places. [2024-06-28 02:25:28,415 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 521 transitions, 7824 flow [2024-06-28 02:25:28,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:25:28,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:28,415 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] [2024-06-28 02:25:28,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 02:25:28,415 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:25:28,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:28,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1727024159, now seen corresponding path program 7 times [2024-06-28 02:25:28,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:28,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153263246] [2024-06-28 02:25:28,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:28,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:28,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:28,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:28,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153263246] [2024-06-28 02:25:28,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153263246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:28,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:28,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:25:28,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787351227] [2024-06-28 02:25:28,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:28,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:25:28,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:28,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:25:28,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:25:28,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:25:28,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 521 transitions, 7824 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:25:28,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:28,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:25:28,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:29,624 INFO L124 PetriNetUnfolderBase]: 3336/5630 cut-off events. [2024-06-28 02:25:29,624 INFO L125 PetriNetUnfolderBase]: For 826261/826264 co-relation queries the response was YES. [2024-06-28 02:25:29,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49858 conditions, 5630 events. 3336/5630 cut-off events. For 826261/826264 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 38259 event pairs, 697 based on Foata normal form. 1/5614 useless extension candidates. Maximal degree in co-relation 49684. Up to 4789 conditions per place. [2024-06-28 02:25:29,711 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 374 selfloop transitions, 168 changer transitions 0/550 dead transitions. [2024-06-28 02:25:29,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 550 transitions, 9419 flow [2024-06-28 02:25:29,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:25:29,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:25:29,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 02:25:29,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6067073170731707 [2024-06-28 02:25:29,712 INFO L175 Difference]: Start difference. First operand has 382 places, 521 transitions, 7824 flow. Second operand 8 states and 199 transitions. [2024-06-28 02:25:29,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 550 transitions, 9419 flow [2024-06-28 02:25:33,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 550 transitions, 9256 flow, removed 47 selfloop flow, removed 2 redundant places. [2024-06-28 02:25:33,462 INFO L231 Difference]: Finished difference. Result has 388 places, 524 transitions, 8038 flow [2024-06-28 02:25:33,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7661, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8038, PETRI_PLACES=388, PETRI_TRANSITIONS=524} [2024-06-28 02:25:33,463 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 346 predicate places. [2024-06-28 02:25:33,463 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 524 transitions, 8038 flow [2024-06-28 02:25:33,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:25:33,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:33,463 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] [2024-06-28 02:25:33,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 02:25:33,463 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:25:33,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:33,464 INFO L85 PathProgramCache]: Analyzing trace with hash -65138629, now seen corresponding path program 8 times [2024-06-28 02:25:33,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:33,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019192563] [2024-06-28 02:25:33,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:33,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:33,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:33,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:33,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:33,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019192563] [2024-06-28 02:25:33,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019192563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:33,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:33,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:25:33,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061441938] [2024-06-28 02:25:33,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:33,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:25:33,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:33,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:25:33,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:25:33,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:25:33,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 524 transitions, 8038 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:25:33,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:33,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:25:33,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:34,841 INFO L124 PetriNetUnfolderBase]: 3349/5654 cut-off events. [2024-06-28 02:25:34,841 INFO L125 PetriNetUnfolderBase]: For 845063/845066 co-relation queries the response was YES. [2024-06-28 02:25:34,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50193 conditions, 5654 events. 3349/5654 cut-off events. For 845063/845066 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 38455 event pairs, 695 based on Foata normal form. 1/5640 useless extension candidates. Maximal degree in co-relation 50016. Up to 4804 conditions per place. [2024-06-28 02:25:34,921 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 374 selfloop transitions, 174 changer transitions 0/556 dead transitions. [2024-06-28 02:25:34,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 556 transitions, 9902 flow [2024-06-28 02:25:34,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:25:34,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:25:34,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 236 transitions. [2024-06-28 02:25:34,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5756097560975609 [2024-06-28 02:25:34,923 INFO L175 Difference]: Start difference. First operand has 388 places, 524 transitions, 8038 flow. Second operand 10 states and 236 transitions. [2024-06-28 02:25:34,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 556 transitions, 9902 flow [2024-06-28 02:25:38,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 556 transitions, 9644 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 02:25:38,996 INFO L231 Difference]: Finished difference. Result has 393 places, 530 transitions, 8216 flow [2024-06-28 02:25:38,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7786, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8216, PETRI_PLACES=393, PETRI_TRANSITIONS=530} [2024-06-28 02:25:38,997 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 351 predicate places. [2024-06-28 02:25:38,997 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 530 transitions, 8216 flow [2024-06-28 02:25:38,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:25:38,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:38,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:25:38,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 02:25:38,997 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:25:38,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:38,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1047779959, now seen corresponding path program 9 times [2024-06-28 02:25:38,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:38,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537060483] [2024-06-28 02:25:38,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:38,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:39,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:39,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:39,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:39,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537060483] [2024-06-28 02:25:39,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537060483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:39,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:39,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:25:39,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557718727] [2024-06-28 02:25:39,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:39,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:25:39,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:39,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:25:39,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:25:39,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:25:39,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 530 transitions, 8216 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:25:39,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:39,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:25:39,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:40,236 INFO L124 PetriNetUnfolderBase]: 3346/5650 cut-off events. [2024-06-28 02:25:40,236 INFO L125 PetriNetUnfolderBase]: For 856279/856282 co-relation queries the response was YES. [2024-06-28 02:25:40,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50259 conditions, 5650 events. 3346/5650 cut-off events. For 856279/856282 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 38400 event pairs, 695 based on Foata normal form. 1/5636 useless extension candidates. Maximal degree in co-relation 50080. Up to 4801 conditions per place. [2024-06-28 02:25:40,329 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 372 selfloop transitions, 173 changer transitions 0/553 dead transitions. [2024-06-28 02:25:40,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 553 transitions, 9782 flow [2024-06-28 02:25:40,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:25:40,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:25:40,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 02:25:40,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.600609756097561 [2024-06-28 02:25:40,330 INFO L175 Difference]: Start difference. First operand has 393 places, 530 transitions, 8216 flow. Second operand 8 states and 197 transitions. [2024-06-28 02:25:40,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 553 transitions, 9782 flow [2024-06-28 02:25:44,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 553 transitions, 9396 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 02:25:44,038 INFO L231 Difference]: Finished difference. Result has 394 places, 530 transitions, 8182 flow [2024-06-28 02:25:44,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7830, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8182, PETRI_PLACES=394, PETRI_TRANSITIONS=530} [2024-06-28 02:25:44,038 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 352 predicate places. [2024-06-28 02:25:44,038 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 530 transitions, 8182 flow [2024-06-28 02:25:44,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:25:44,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:44,039 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] [2024-06-28 02:25:44,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 02:25:44,039 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:25:44,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:44,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1047987163, now seen corresponding path program 5 times [2024-06-28 02:25:44,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:44,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723895928] [2024-06-28 02:25:44,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:44,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:44,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:44,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:44,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723895928] [2024-06-28 02:25:44,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723895928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:44,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:44,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:25:44,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713428476] [2024-06-28 02:25:44,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:44,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:25:44,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:44,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:25:44,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:25:44,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:25:44,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 530 transitions, 8182 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:25:44,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:44,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:25:44,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:45,265 INFO L124 PetriNetUnfolderBase]: 3359/5664 cut-off events. [2024-06-28 02:25:45,265 INFO L125 PetriNetUnfolderBase]: For 877373/877376 co-relation queries the response was YES. [2024-06-28 02:25:45,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50622 conditions, 5664 events. 3359/5664 cut-off events. For 877373/877376 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 38448 event pairs, 728 based on Foata normal form. 1/5642 useless extension candidates. Maximal degree in co-relation 50442. Up to 4425 conditions per place. [2024-06-28 02:25:45,355 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 276 selfloop transitions, 277 changer transitions 0/561 dead transitions. [2024-06-28 02:25:45,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 561 transitions, 10296 flow [2024-06-28 02:25:45,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:25:45,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:25:45,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-28 02:25:45,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6189024390243902 [2024-06-28 02:25:45,357 INFO L175 Difference]: Start difference. First operand has 394 places, 530 transitions, 8182 flow. Second operand 8 states and 203 transitions. [2024-06-28 02:25:45,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 561 transitions, 10296 flow [2024-06-28 02:25:48,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 561 transitions, 9950 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 02:25:48,831 INFO L231 Difference]: Finished difference. Result has 395 places, 536 transitions, 8496 flow [2024-06-28 02:25:48,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7836, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=271, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8496, PETRI_PLACES=395, PETRI_TRANSITIONS=536} [2024-06-28 02:25:48,831 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 353 predicate places. [2024-06-28 02:25:48,831 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 536 transitions, 8496 flow [2024-06-28 02:25:48,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:25:48,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:48,832 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] [2024-06-28 02:25:48,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 02:25:48,832 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:25:48,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:48,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1047601213, now seen corresponding path program 6 times [2024-06-28 02:25:48,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:48,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540012326] [2024-06-28 02:25:48,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:48,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:48,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:48,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:48,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540012326] [2024-06-28 02:25:48,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540012326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:48,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:48,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:25:48,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689855100] [2024-06-28 02:25:48,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:48,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:25:48,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:48,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:25:48,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:25:48,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:25:48,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 536 transitions, 8496 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:25:48,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:48,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:25:48,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:50,131 INFO L124 PetriNetUnfolderBase]: 3356/5660 cut-off events. [2024-06-28 02:25:50,131 INFO L125 PetriNetUnfolderBase]: For 888979/888982 co-relation queries the response was YES. [2024-06-28 02:25:50,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50889 conditions, 5660 events. 3356/5660 cut-off events. For 888979/888982 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 38463 event pairs, 728 based on Foata normal form. 1/5638 useless extension candidates. Maximal degree in co-relation 50708. Up to 4423 conditions per place. [2024-06-28 02:25:50,218 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 273 selfloop transitions, 279 changer transitions 0/560 dead transitions. [2024-06-28 02:25:50,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 560 transitions, 10300 flow [2024-06-28 02:25:50,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:25:50,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:25:50,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-28 02:25:50,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6128048780487805 [2024-06-28 02:25:50,219 INFO L175 Difference]: Start difference. First operand has 395 places, 536 transitions, 8496 flow. Second operand 8 states and 201 transitions. [2024-06-28 02:25:50,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 560 transitions, 10300 flow [2024-06-28 02:25:54,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 560 transitions, 9858 flow, removed 36 selfloop flow, removed 3 redundant places. [2024-06-28 02:25:54,388 INFO L231 Difference]: Finished difference. Result has 400 places, 536 transitions, 8618 flow [2024-06-28 02:25:54,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8054, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=279, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8618, PETRI_PLACES=400, PETRI_TRANSITIONS=536} [2024-06-28 02:25:54,389 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 358 predicate places. [2024-06-28 02:25:54,389 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 536 transitions, 8618 flow [2024-06-28 02:25:54,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:25:54,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:54,389 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] [2024-06-28 02:25:54,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 02:25:54,390 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:25:54,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:54,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1649506053, now seen corresponding path program 10 times [2024-06-28 02:25:54,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:54,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103408611] [2024-06-28 02:25:54,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:54,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:54,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:54,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:54,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:54,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103408611] [2024-06-28 02:25:54,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103408611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:54,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:54,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:25:54,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516801193] [2024-06-28 02:25:54,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:54,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:25:54,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:54,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:25:54,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:25:54,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:25:54,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 536 transitions, 8618 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:25:54,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:54,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:25:54,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:25:55,666 INFO L124 PetriNetUnfolderBase]: 3369/5707 cut-off events. [2024-06-28 02:25:55,666 INFO L125 PetriNetUnfolderBase]: For 909246/909249 co-relation queries the response was YES. [2024-06-28 02:25:55,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51310 conditions, 5707 events. 3369/5707 cut-off events. For 909246/909249 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 39022 event pairs, 699 based on Foata normal form. 1/5698 useless extension candidates. Maximal degree in co-relation 51128. Up to 4830 conditions per place. [2024-06-28 02:25:55,760 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 378 selfloop transitions, 179 changer transitions 0/565 dead transitions. [2024-06-28 02:25:55,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 565 transitions, 10734 flow [2024-06-28 02:25:55,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:25:55,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:25:55,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-06-28 02:25:55,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5880758807588076 [2024-06-28 02:25:55,762 INFO L175 Difference]: Start difference. First operand has 400 places, 536 transitions, 8618 flow. Second operand 9 states and 217 transitions. [2024-06-28 02:25:55,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 565 transitions, 10734 flow [2024-06-28 02:25:59,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 565 transitions, 10160 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 02:25:59,735 INFO L231 Difference]: Finished difference. Result has 402 places, 542 transitions, 8492 flow [2024-06-28 02:25:59,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8052, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8492, PETRI_PLACES=402, PETRI_TRANSITIONS=542} [2024-06-28 02:25:59,736 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 360 predicate places. [2024-06-28 02:25:59,736 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 542 transitions, 8492 flow [2024-06-28 02:25:59,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:25:59,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:25:59,736 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] [2024-06-28 02:25:59,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 02:25:59,737 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:25:59,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:25:59,737 INFO L85 PathProgramCache]: Analyzing trace with hash -999847077, now seen corresponding path program 7 times [2024-06-28 02:25:59,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:25:59,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354482612] [2024-06-28 02:25:59,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:25:59,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:25:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:25:59,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:25:59,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:25:59,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354482612] [2024-06-28 02:25:59,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354482612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:25:59,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:25:59,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:25:59,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514683257] [2024-06-28 02:25:59,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:25:59,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:25:59,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:25:59,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:25:59,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:25:59,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:25:59,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 542 transitions, 8492 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:25:59,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:25:59,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:25:59,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:00,995 INFO L124 PetriNetUnfolderBase]: 3414/5741 cut-off events. [2024-06-28 02:26:00,996 INFO L125 PetriNetUnfolderBase]: For 959124/959127 co-relation queries the response was YES. [2024-06-28 02:26:01,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52275 conditions, 5741 events. 3414/5741 cut-off events. For 959124/959127 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 38981 event pairs, 720 based on Foata normal form. 1/5718 useless extension candidates. Maximal degree in co-relation 52092. Up to 4470 conditions per place. [2024-06-28 02:26:01,085 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 270 selfloop transitions, 302 changer transitions 0/580 dead transitions. [2024-06-28 02:26:01,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 580 transitions, 10870 flow [2024-06-28 02:26:01,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:26:01,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:26:01,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-28 02:26:01,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6128048780487805 [2024-06-28 02:26:01,086 INFO L175 Difference]: Start difference. First operand has 402 places, 542 transitions, 8492 flow. Second operand 8 states and 201 transitions. [2024-06-28 02:26:01,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 580 transitions, 10870 flow [2024-06-28 02:26:05,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 580 transitions, 10496 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-28 02:26:05,387 INFO L231 Difference]: Finished difference. Result has 405 places, 558 transitions, 9038 flow [2024-06-28 02:26:05,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8118, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=286, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9038, PETRI_PLACES=405, PETRI_TRANSITIONS=558} [2024-06-28 02:26:05,388 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 363 predicate places. [2024-06-28 02:26:05,388 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 558 transitions, 9038 flow [2024-06-28 02:26:05,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:26:05,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:05,388 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] [2024-06-28 02:26:05,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 02:26:05,388 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:26:05,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:05,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1760019429, now seen corresponding path program 8 times [2024-06-28 02:26:05,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:05,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593151759] [2024-06-28 02:26:05,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:05,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:05,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:05,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:05,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:05,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593151759] [2024-06-28 02:26:05,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593151759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:05,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:05,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:26:05,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334771131] [2024-06-28 02:26:05,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:05,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:26:05,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:05,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:26:05,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:26:05,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:26:05,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 558 transitions, 9038 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:26:05,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:05,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:26:05,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:06,711 INFO L124 PetriNetUnfolderBase]: 3424/5792 cut-off events. [2024-06-28 02:26:06,712 INFO L125 PetriNetUnfolderBase]: For 974627/974627 co-relation queries the response was YES. [2024-06-28 02:26:06,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52723 conditions, 5792 events. 3424/5792 cut-off events. For 974627/974627 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 39644 event pairs, 649 based on Foata normal form. 1/5791 useless extension candidates. Maximal degree in co-relation 52539. Up to 5188 conditions per place. [2024-06-28 02:26:06,802 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 525 selfloop transitions, 49 changer transitions 0/582 dead transitions. [2024-06-28 02:26:06,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 582 transitions, 10338 flow [2024-06-28 02:26:06,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:26:06,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:26:06,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-28 02:26:06,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5670731707317073 [2024-06-28 02:26:06,804 INFO L175 Difference]: Start difference. First operand has 405 places, 558 transitions, 9038 flow. Second operand 8 states and 186 transitions. [2024-06-28 02:26:06,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 582 transitions, 10338 flow [2024-06-28 02:26:11,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 582 transitions, 9784 flow, removed 64 selfloop flow, removed 3 redundant places. [2024-06-28 02:26:11,900 INFO L231 Difference]: Finished difference. Result has 410 places, 564 transitions, 8702 flow [2024-06-28 02:26:11,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8505, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8702, PETRI_PLACES=410, PETRI_TRANSITIONS=564} [2024-06-28 02:26:11,900 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 368 predicate places. [2024-06-28 02:26:11,901 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 564 transitions, 8702 flow [2024-06-28 02:26:11,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:26:11,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:11,901 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] [2024-06-28 02:26:11,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 02:26:11,901 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:26:11,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:11,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1753554999, now seen corresponding path program 9 times [2024-06-28 02:26:11,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:11,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246776377] [2024-06-28 02:26:11,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:11,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:11,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:11,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:11,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:11,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246776377] [2024-06-28 02:26:11,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246776377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:11,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:11,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:26:11,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481814668] [2024-06-28 02:26:11,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:11,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:26:11,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:11,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:26:11,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:26:12,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:26:12,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 564 transitions, 8702 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:26:12,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:12,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:26:12,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:13,326 INFO L124 PetriNetUnfolderBase]: 3429/5766 cut-off events. [2024-06-28 02:26:13,326 INFO L125 PetriNetUnfolderBase]: For 992040/992043 co-relation queries the response was YES. [2024-06-28 02:26:13,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52102 conditions, 5766 events. 3429/5766 cut-off events. For 992040/992043 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 39227 event pairs, 720 based on Foata normal form. 1/5743 useless extension candidates. Maximal degree in co-relation 51917. Up to 4482 conditions per place. [2024-06-28 02:26:13,406 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 279 selfloop transitions, 303 changer transitions 0/590 dead transitions. [2024-06-28 02:26:13,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 590 transitions, 11072 flow [2024-06-28 02:26:13,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:26:13,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:26:13,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-28 02:26:13,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6158536585365854 [2024-06-28 02:26:13,408 INFO L175 Difference]: Start difference. First operand has 410 places, 564 transitions, 8702 flow. Second operand 8 states and 202 transitions. [2024-06-28 02:26:13,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 590 transitions, 11072 flow [2024-06-28 02:26:18,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 590 transitions, 10956 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 02:26:18,555 INFO L231 Difference]: Finished difference. Result has 413 places, 567 transitions, 9240 flow [2024-06-28 02:26:18,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8586, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=300, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9240, PETRI_PLACES=413, PETRI_TRANSITIONS=567} [2024-06-28 02:26:18,555 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 371 predicate places. [2024-06-28 02:26:18,555 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 567 transitions, 9240 flow [2024-06-28 02:26:18,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:26:18,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:18,556 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] [2024-06-28 02:26:18,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 02:26:18,556 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:26:18,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:18,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1524306563, now seen corresponding path program 10 times [2024-06-28 02:26:18,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:18,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5649016] [2024-06-28 02:26:18,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:18,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:18,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:18,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:18,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:18,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5649016] [2024-06-28 02:26:18,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5649016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:18,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:18,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:26:18,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545366750] [2024-06-28 02:26:18,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:18,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:26:18,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:18,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:26:18,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:26:18,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:26:18,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 567 transitions, 9240 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:26:18,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:18,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:26:18,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:19,894 INFO L124 PetriNetUnfolderBase]: 3426/5809 cut-off events. [2024-06-28 02:26:19,895 INFO L125 PetriNetUnfolderBase]: For 1002444/1002444 co-relation queries the response was YES. [2024-06-28 02:26:19,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52838 conditions, 5809 events. 3426/5809 cut-off events. For 1002444/1002444 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 39834 event pairs, 659 based on Foata normal form. 1/5808 useless extension candidates. Maximal degree in co-relation 52652. Up to 5181 conditions per place. [2024-06-28 02:26:19,990 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 523 selfloop transitions, 57 changer transitions 0/588 dead transitions. [2024-06-28 02:26:19,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 588 transitions, 10674 flow [2024-06-28 02:26:19,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:26:19,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:26:19,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 227 transitions. [2024-06-28 02:26:19,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5536585365853659 [2024-06-28 02:26:19,991 INFO L175 Difference]: Start difference. First operand has 413 places, 567 transitions, 9240 flow. Second operand 10 states and 227 transitions. [2024-06-28 02:26:19,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 588 transitions, 10674 flow [2024-06-28 02:26:25,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 588 transitions, 10129 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-28 02:26:25,730 INFO L231 Difference]: Finished difference. Result has 420 places, 567 transitions, 8815 flow [2024-06-28 02:26:25,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8695, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8815, PETRI_PLACES=420, PETRI_TRANSITIONS=567} [2024-06-28 02:26:25,731 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 378 predicate places. [2024-06-28 02:26:25,731 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 567 transitions, 8815 flow [2024-06-28 02:26:25,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:26:25,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:25,731 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] [2024-06-28 02:26:25,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 02:26:25,732 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:26:25,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:25,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1672064963, now seen corresponding path program 11 times [2024-06-28 02:26:25,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:25,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015705286] [2024-06-28 02:26:25,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:25,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:25,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:25,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:25,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:25,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015705286] [2024-06-28 02:26:25,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015705286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:25,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:25,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:26:25,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193856995] [2024-06-28 02:26:25,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:25,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:26:25,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:25,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:26:25,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:26:25,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:26:25,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 567 transitions, 8815 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:26:25,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:25,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:26:25,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:27,014 INFO L124 PetriNetUnfolderBase]: 3423/5758 cut-off events. [2024-06-28 02:26:27,014 INFO L125 PetriNetUnfolderBase]: For 1013435/1013438 co-relation queries the response was YES. [2024-06-28 02:26:27,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52129 conditions, 5758 events. 3423/5758 cut-off events. For 1013435/1013438 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 39251 event pairs, 720 based on Foata normal form. 1/5735 useless extension candidates. Maximal degree in co-relation 51942. Up to 4478 conditions per place. [2024-06-28 02:26:27,112 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 277 selfloop transitions, 304 changer transitions 0/589 dead transitions. [2024-06-28 02:26:27,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 589 transitions, 10933 flow [2024-06-28 02:26:27,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:26:27,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:26:27,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-28 02:26:27,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6128048780487805 [2024-06-28 02:26:27,114 INFO L175 Difference]: Start difference. First operand has 420 places, 567 transitions, 8815 flow. Second operand 8 states and 201 transitions. [2024-06-28 02:26:27,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 589 transitions, 10933 flow [2024-06-28 02:26:32,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 589 transitions, 10763 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 02:26:32,536 INFO L231 Difference]: Finished difference. Result has 421 places, 567 transitions, 9259 flow [2024-06-28 02:26:32,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8645, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=304, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9259, PETRI_PLACES=421, PETRI_TRANSITIONS=567} [2024-06-28 02:26:32,537 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 379 predicate places. [2024-06-28 02:26:32,537 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 567 transitions, 9259 flow [2024-06-28 02:26:32,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:26:32,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:32,537 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] [2024-06-28 02:26:32,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 02:26:32,537 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:26:32,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:32,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1935763397, now seen corresponding path program 11 times [2024-06-28 02:26:32,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:32,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900160251] [2024-06-28 02:26:32,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:32,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:32,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:32,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:32,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:32,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900160251] [2024-06-28 02:26:32,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900160251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:32,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:32,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:26:32,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107267061] [2024-06-28 02:26:32,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:32,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:26:32,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:32,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:26:32,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:26:32,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:26:32,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 567 transitions, 9259 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:26:32,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:32,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:26:32,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:33,825 INFO L124 PetriNetUnfolderBase]: 3420/5777 cut-off events. [2024-06-28 02:26:33,825 INFO L125 PetriNetUnfolderBase]: For 1025602/1025602 co-relation queries the response was YES. [2024-06-28 02:26:33,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52796 conditions, 5777 events. 3420/5777 cut-off events. For 1025602/1025602 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 39498 event pairs, 638 based on Foata normal form. 1/5776 useless extension candidates. Maximal degree in co-relation 52608. Up to 5209 conditions per place. [2024-06-28 02:26:33,918 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 546 selfloop transitions, 31 changer transitions 0/585 dead transitions. [2024-06-28 02:26:33,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 585 transitions, 10457 flow [2024-06-28 02:26:33,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:26:33,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:26:33,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-28 02:26:33,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5579268292682927 [2024-06-28 02:26:33,919 INFO L175 Difference]: Start difference. First operand has 421 places, 567 transitions, 9259 flow. Second operand 8 states and 183 transitions. [2024-06-28 02:26:33,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 585 transitions, 10457 flow [2024-06-28 02:26:39,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 585 transitions, 9954 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 02:26:39,096 INFO L231 Difference]: Finished difference. Result has 423 places, 567 transitions, 8824 flow [2024-06-28 02:26:39,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8756, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8824, PETRI_PLACES=423, PETRI_TRANSITIONS=567} [2024-06-28 02:26:39,096 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 381 predicate places. [2024-06-28 02:26:39,096 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 567 transitions, 8824 flow [2024-06-28 02:26:39,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:26:39,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:39,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:26:39,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 02:26:39,097 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:26:39,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:39,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1524069413, now seen corresponding path program 12 times [2024-06-28 02:26:39,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:39,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434744337] [2024-06-28 02:26:39,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:39,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:39,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:39,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:39,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:39,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434744337] [2024-06-28 02:26:39,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434744337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:39,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:39,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:26:39,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946373960] [2024-06-28 02:26:39,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:39,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:26:39,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:39,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:26:39,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:26:39,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:26:39,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 567 transitions, 8824 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:26:39,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:39,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:26:39,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:40,493 INFO L124 PetriNetUnfolderBase]: 3417/5773 cut-off events. [2024-06-28 02:26:40,493 INFO L125 PetriNetUnfolderBase]: For 1033631/1033631 co-relation queries the response was YES. [2024-06-28 02:26:40,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52129 conditions, 5773 events. 3417/5773 cut-off events. For 1033631/1033631 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 39363 event pairs, 639 based on Foata normal form. 1/5772 useless extension candidates. Maximal degree in co-relation 51940. Up to 5170 conditions per place. [2024-06-28 02:26:40,578 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 521 selfloop transitions, 56 changer transitions 0/585 dead transitions. [2024-06-28 02:26:40,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 585 transitions, 10022 flow [2024-06-28 02:26:40,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:26:40,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:26:40,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 02:26:40,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.573170731707317 [2024-06-28 02:26:40,580 INFO L175 Difference]: Start difference. First operand has 423 places, 567 transitions, 8824 flow. Second operand 8 states and 188 transitions. [2024-06-28 02:26:40,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 585 transitions, 10022 flow [2024-06-28 02:26:46,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 585 transitions, 9934 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-28 02:26:46,036 INFO L231 Difference]: Finished difference. Result has 427 places, 567 transitions, 8854 flow [2024-06-28 02:26:46,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8736, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8854, PETRI_PLACES=427, PETRI_TRANSITIONS=567} [2024-06-28 02:26:46,037 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 385 predicate places. [2024-06-28 02:26:46,037 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 567 transitions, 8854 flow [2024-06-28 02:26:46,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:26:46,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:46,037 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] [2024-06-28 02:26:46,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 02:26:46,037 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:26:46,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:46,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1671678827, now seen corresponding path program 12 times [2024-06-28 02:26:46,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:46,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668313612] [2024-06-28 02:26:46,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:46,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:46,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:46,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:46,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:46,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668313612] [2024-06-28 02:26:46,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668313612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:46,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:46,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:26:46,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614409281] [2024-06-28 02:26:46,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:46,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:26:46,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:46,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:26:46,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:26:46,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:26:46,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 567 transitions, 8854 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:26:46,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:46,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:26:46,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:47,326 INFO L124 PetriNetUnfolderBase]: 3414/5760 cut-off events. [2024-06-28 02:26:47,327 INFO L125 PetriNetUnfolderBase]: For 1045311/1045314 co-relation queries the response was YES. [2024-06-28 02:26:47,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52157 conditions, 5760 events. 3414/5760 cut-off events. For 1045311/1045314 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 39267 event pairs, 679 based on Foata normal form. 1/5751 useless extension candidates. Maximal degree in co-relation 51967. Up to 4895 conditions per place. [2024-06-28 02:26:47,421 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 403 selfloop transitions, 180 changer transitions 0/591 dead transitions. [2024-06-28 02:26:47,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 591 transitions, 10772 flow [2024-06-28 02:26:47,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:26:47,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:26:47,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 254 transitions. [2024-06-28 02:26:47,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5631929046563193 [2024-06-28 02:26:47,423 INFO L175 Difference]: Start difference. First operand has 427 places, 567 transitions, 8854 flow. Second operand 11 states and 254 transitions. [2024-06-28 02:26:47,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 591 transitions, 10772 flow [2024-06-28 02:26:53,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 591 transitions, 10654 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 02:26:53,221 INFO L231 Difference]: Finished difference. Result has 431 places, 567 transitions, 9102 flow [2024-06-28 02:26:53,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8736, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9102, PETRI_PLACES=431, PETRI_TRANSITIONS=567} [2024-06-28 02:26:53,222 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 389 predicate places. [2024-06-28 02:26:53,222 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 567 transitions, 9102 flow [2024-06-28 02:26:53,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:26:53,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:26:53,223 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] [2024-06-28 02:26:53,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 02:26:53,223 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:26:53,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:26:53,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1523977157, now seen corresponding path program 3 times [2024-06-28 02:26:53,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:26:53,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378873127] [2024-06-28 02:26:53,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:26:53,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:26:53,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:26:53,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:26:53,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:26:53,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378873127] [2024-06-28 02:26:53,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378873127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:26:53,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:26:53,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:26:53,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502566557] [2024-06-28 02:26:53,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:26:53,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:26:53,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:26:53,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:26:53,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:26:53,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:26:53,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 567 transitions, 9102 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:26:53,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:26:53,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:26:53,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:26:54,522 INFO L124 PetriNetUnfolderBase]: 3434/5817 cut-off events. [2024-06-28 02:26:54,523 INFO L125 PetriNetUnfolderBase]: For 1095060/1095060 co-relation queries the response was YES. [2024-06-28 02:26:54,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52932 conditions, 5817 events. 3434/5817 cut-off events. For 1095060/1095060 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 39906 event pairs, 649 based on Foata normal form. 6/5821 useless extension candidates. Maximal degree in co-relation 52741. Up to 5144 conditions per place. [2024-06-28 02:26:54,620 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 537 selfloop transitions, 48 changer transitions 0/593 dead transitions. [2024-06-28 02:26:54,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 593 transitions, 10400 flow [2024-06-28 02:26:54,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:26:54,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:26:54,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-28 02:26:54,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5823170731707317 [2024-06-28 02:26:54,621 INFO L175 Difference]: Start difference. First operand has 431 places, 567 transitions, 9102 flow. Second operand 8 states and 191 transitions. [2024-06-28 02:26:54,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 593 transitions, 10400 flow [2024-06-28 02:27:01,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 593 transitions, 10085 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 02:27:01,379 INFO L231 Difference]: Finished difference. Result has 430 places, 568 transitions, 8915 flow [2024-06-28 02:27:01,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8787, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8915, PETRI_PLACES=430, PETRI_TRANSITIONS=568} [2024-06-28 02:27:01,380 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 388 predicate places. [2024-06-28 02:27:01,380 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 568 transitions, 8915 flow [2024-06-28 02:27:01,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:27:01,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:01,380 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] [2024-06-28 02:27:01,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 02:27:01,381 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:27:01,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:01,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1047772023, now seen corresponding path program 1 times [2024-06-28 02:27:01,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:01,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296124700] [2024-06-28 02:27:01,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:01,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:01,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:01,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:01,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296124700] [2024-06-28 02:27:01,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296124700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:01,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:01,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:27:01,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313206937] [2024-06-28 02:27:01,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:01,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:27:01,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:01,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:27:01,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:27:01,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:27:01,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 568 transitions, 8915 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:27:01,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:01,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:27:01,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:02,658 INFO L124 PetriNetUnfolderBase]: 3442/5812 cut-off events. [2024-06-28 02:27:02,658 INFO L125 PetriNetUnfolderBase]: For 1088400/1088403 co-relation queries the response was YES. [2024-06-28 02:27:02,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52827 conditions, 5812 events. 3442/5812 cut-off events. For 1088400/1088403 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 39754 event pairs, 666 based on Foata normal form. 2/5806 useless extension candidates. Maximal degree in co-relation 52635. Up to 5145 conditions per place. [2024-06-28 02:27:02,754 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 511 selfloop transitions, 73 changer transitions 0/592 dead transitions. [2024-06-28 02:27:02,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 592 transitions, 10163 flow [2024-06-28 02:27:02,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:27:02,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:27:02,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-28 02:27:02,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5792682926829268 [2024-06-28 02:27:02,755 INFO L175 Difference]: Start difference. First operand has 430 places, 568 transitions, 8915 flow. Second operand 8 states and 190 transitions. [2024-06-28 02:27:02,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 592 transitions, 10163 flow [2024-06-28 02:27:09,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 592 transitions, 10065 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 02:27:09,761 INFO L231 Difference]: Finished difference. Result has 433 places, 570 transitions, 8998 flow [2024-06-28 02:27:09,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8817, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8998, PETRI_PLACES=433, PETRI_TRANSITIONS=570} [2024-06-28 02:27:09,762 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 391 predicate places. [2024-06-28 02:27:09,762 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 570 transitions, 8998 flow [2024-06-28 02:27:09,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:27:09,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:09,762 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] [2024-06-28 02:27:09,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 02:27:09,763 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:27:09,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:09,763 INFO L85 PathProgramCache]: Analyzing trace with hash -965711339, now seen corresponding path program 1 times [2024-06-28 02:27:09,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:09,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735971859] [2024-06-28 02:27:09,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:09,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:09,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:09,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:09,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735971859] [2024-06-28 02:27:09,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735971859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:09,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:09,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:27:09,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872362823] [2024-06-28 02:27:09,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:09,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:27:09,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:09,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:27:09,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:27:09,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:27:09,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 570 transitions, 8998 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:27:09,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:09,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:27:09,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:11,127 INFO L124 PetriNetUnfolderBase]: 3450/5817 cut-off events. [2024-06-28 02:27:11,127 INFO L125 PetriNetUnfolderBase]: For 1107027/1107030 co-relation queries the response was YES. [2024-06-28 02:27:11,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53068 conditions, 5817 events. 3450/5817 cut-off events. For 1107027/1107030 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 39766 event pairs, 690 based on Foata normal form. 2/5806 useless extension candidates. Maximal degree in co-relation 52876. Up to 4999 conditions per place. [2024-06-28 02:27:11,221 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 404 selfloop transitions, 182 changer transitions 0/594 dead transitions. [2024-06-28 02:27:11,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 594 transitions, 10276 flow [2024-06-28 02:27:11,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:27:11,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:27:11,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-28 02:27:11,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5884146341463414 [2024-06-28 02:27:11,222 INFO L175 Difference]: Start difference. First operand has 433 places, 570 transitions, 8998 flow. Second operand 8 states and 193 transitions. [2024-06-28 02:27:11,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 594 transitions, 10276 flow [2024-06-28 02:27:17,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 594 transitions, 10117 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 02:27:17,448 INFO L231 Difference]: Finished difference. Result has 435 places, 572 transitions, 9264 flow [2024-06-28 02:27:17,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8839, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9264, PETRI_PLACES=435, PETRI_TRANSITIONS=572} [2024-06-28 02:27:17,449 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 393 predicate places. [2024-06-28 02:27:17,449 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 572 transitions, 9264 flow [2024-06-28 02:27:17,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:27:17,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:17,449 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] [2024-06-28 02:27:17,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 02:27:17,449 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:27:17,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:17,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1649498117, now seen corresponding path program 2 times [2024-06-28 02:27:17,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:17,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836164599] [2024-06-28 02:27:17,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:17,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:17,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:17,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:17,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:17,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836164599] [2024-06-28 02:27:17,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836164599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:17,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:17,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:27:17,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238965616] [2024-06-28 02:27:17,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:17,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:27:17,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:17,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:27:17,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:27:17,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:27:17,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 572 transitions, 9264 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:27:17,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:17,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:27:17,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:18,924 INFO L124 PetriNetUnfolderBase]: 3458/5850 cut-off events. [2024-06-28 02:27:18,924 INFO L125 PetriNetUnfolderBase]: For 1123158/1123161 co-relation queries the response was YES. [2024-06-28 02:27:18,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53627 conditions, 5850 events. 3458/5850 cut-off events. For 1123158/1123161 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 40118 event pairs, 672 based on Foata normal form. 2/5846 useless extension candidates. Maximal degree in co-relation 53434. Up to 5169 conditions per place. [2024-06-28 02:27:19,013 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 513 selfloop transitions, 73 changer transitions 0/594 dead transitions. [2024-06-28 02:27:19,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 594 transitions, 10514 flow [2024-06-28 02:27:19,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:27:19,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:27:19,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 207 transitions. [2024-06-28 02:27:19,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5609756097560976 [2024-06-28 02:27:19,015 INFO L175 Difference]: Start difference. First operand has 435 places, 572 transitions, 9264 flow. Second operand 9 states and 207 transitions. [2024-06-28 02:27:19,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 594 transitions, 10514 flow [2024-06-28 02:27:25,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 594 transitions, 10105 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 02:27:25,387 INFO L231 Difference]: Finished difference. Result has 438 places, 574 transitions, 9040 flow [2024-06-28 02:27:25,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8855, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9040, PETRI_PLACES=438, PETRI_TRANSITIONS=574} [2024-06-28 02:27:25,388 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 396 predicate places. [2024-06-28 02:27:25,388 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 574 transitions, 9040 flow [2024-06-28 02:27:25,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:27:25,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:25,388 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] [2024-06-28 02:27:25,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 02:27:25,389 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:27:25,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:25,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1753954837, now seen corresponding path program 2 times [2024-06-28 02:27:25,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:25,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597992826] [2024-06-28 02:27:25,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:25,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:25,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:25,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:25,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:25,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597992826] [2024-06-28 02:27:25,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597992826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:25,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:25,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:27:25,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391676249] [2024-06-28 02:27:25,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:25,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:27:25,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:25,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:27:25,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:27:25,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:27:25,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 574 transitions, 9040 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:27:25,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:25,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:27:25,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:26,787 INFO L124 PetriNetUnfolderBase]: 3466/5855 cut-off events. [2024-06-28 02:27:26,787 INFO L125 PetriNetUnfolderBase]: For 1141030/1141033 co-relation queries the response was YES. [2024-06-28 02:27:26,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53561 conditions, 5855 events. 3466/5855 cut-off events. For 1141030/1141033 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 40119 event pairs, 702 based on Foata normal form. 2/5844 useless extension candidates. Maximal degree in co-relation 53367. Up to 5023 conditions per place. [2024-06-28 02:27:26,886 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 407 selfloop transitions, 180 changer transitions 0/595 dead transitions. [2024-06-28 02:27:26,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 595 transitions, 10316 flow [2024-06-28 02:27:26,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:27:26,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:27:26,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-28 02:27:26,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5853658536585366 [2024-06-28 02:27:26,888 INFO L175 Difference]: Start difference. First operand has 438 places, 574 transitions, 9040 flow. Second operand 8 states and 192 transitions. [2024-06-28 02:27:26,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 595 transitions, 10316 flow [2024-06-28 02:27:33,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 595 transitions, 10153 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 02:27:33,664 INFO L231 Difference]: Finished difference. Result has 439 places, 576 transitions, 9302 flow [2024-06-28 02:27:33,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8877, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9302, PETRI_PLACES=439, PETRI_TRANSITIONS=576} [2024-06-28 02:27:33,664 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 397 predicate places. [2024-06-28 02:27:33,665 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 576 transitions, 9302 flow [2024-06-28 02:27:33,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:27:33,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:33,665 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] [2024-06-28 02:27:33,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 02:27:33,665 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:27:33,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:33,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1981855987, now seen corresponding path program 3 times [2024-06-28 02:27:33,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:33,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720702999] [2024-06-28 02:27:33,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:33,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:33,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:33,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:33,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720702999] [2024-06-28 02:27:33,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720702999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:33,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:33,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:27:33,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889865923] [2024-06-28 02:27:33,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:33,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:27:33,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:33,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:27:33,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:27:33,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:27:33,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 576 transitions, 9302 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:27:33,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:33,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:27:33,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:35,079 INFO L124 PetriNetUnfolderBase]: 3474/5879 cut-off events. [2024-06-28 02:27:35,080 INFO L125 PetriNetUnfolderBase]: For 1158769/1158772 co-relation queries the response was YES. [2024-06-28 02:27:35,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54159 conditions, 5879 events. 3474/5879 cut-off events. For 1158769/1158772 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 40341 event pairs, 714 based on Foata normal form. 2/5868 useless extension candidates. Maximal degree in co-relation 53964. Up to 5035 conditions per place. [2024-06-28 02:27:35,177 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 407 selfloop transitions, 182 changer transitions 0/597 dead transitions. [2024-06-28 02:27:35,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 597 transitions, 10586 flow [2024-06-28 02:27:35,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:27:35,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:27:35,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-28 02:27:35,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5853658536585366 [2024-06-28 02:27:35,178 INFO L175 Difference]: Start difference. First operand has 439 places, 576 transitions, 9302 flow. Second operand 8 states and 192 transitions. [2024-06-28 02:27:35,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 597 transitions, 10586 flow [2024-06-28 02:27:41,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 597 transitions, 10177 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 02:27:41,644 INFO L231 Difference]: Finished difference. Result has 441 places, 578 transitions, 9326 flow [2024-06-28 02:27:41,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8893, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9326, PETRI_PLACES=441, PETRI_TRANSITIONS=578} [2024-06-28 02:27:41,645 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 399 predicate places. [2024-06-28 02:27:41,645 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 578 transitions, 9326 flow [2024-06-28 02:27:41,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:27:41,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:41,645 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] [2024-06-28 02:27:41,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 02:27:41,645 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:27:41,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:41,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1990426867, now seen corresponding path program 4 times [2024-06-28 02:27:41,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:41,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757685597] [2024-06-28 02:27:41,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:41,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:41,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:41,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:41,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757685597] [2024-06-28 02:27:41,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757685597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:41,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:41,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:27:41,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061897152] [2024-06-28 02:27:41,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:41,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:27:41,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:41,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:27:41,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:27:41,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:27:41,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 578 transitions, 9326 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:27:41,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:41,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:27:41,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:43,075 INFO L124 PetriNetUnfolderBase]: 3541/5968 cut-off events. [2024-06-28 02:27:43,075 INFO L125 PetriNetUnfolderBase]: For 1260073/1260076 co-relation queries the response was YES. [2024-06-28 02:27:43,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56413 conditions, 5968 events. 3541/5968 cut-off events. For 1260073/1260076 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 40930 event pairs, 713 based on Foata normal form. 2/5957 useless extension candidates. Maximal degree in co-relation 56217. Up to 5051 conditions per place. [2024-06-28 02:27:43,179 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 409 selfloop transitions, 190 changer transitions 0/607 dead transitions. [2024-06-28 02:27:43,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 607 transitions, 10996 flow [2024-06-28 02:27:43,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:27:43,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:27:43,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 02:27:43,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.600609756097561 [2024-06-28 02:27:43,180 INFO L175 Difference]: Start difference. First operand has 441 places, 578 transitions, 9326 flow. Second operand 8 states and 197 transitions. [2024-06-28 02:27:43,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 607 transitions, 10996 flow [2024-06-28 02:27:50,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 607 transitions, 10579 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 02:27:50,454 INFO L231 Difference]: Finished difference. Result has 444 places, 583 transitions, 9457 flow [2024-06-28 02:27:50,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8909, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9457, PETRI_PLACES=444, PETRI_TRANSITIONS=583} [2024-06-28 02:27:50,462 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 402 predicate places. [2024-06-28 02:27:50,462 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 583 transitions, 9457 flow [2024-06-28 02:27:50,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:27:50,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:27:50,462 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] [2024-06-28 02:27:50,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 02:27:50,463 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:27:50,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:27:50,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1214016775, now seen corresponding path program 13 times [2024-06-28 02:27:50,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:27:50,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38828676] [2024-06-28 02:27:50,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:27:50,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:27:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:27:50,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:27:50,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:27:50,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38828676] [2024-06-28 02:27:50,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38828676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:27:50,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:27:50,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:27:50,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739009754] [2024-06-28 02:27:50,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:27:50,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:27:50,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:27:50,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:27:50,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:27:50,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:27:50,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 583 transitions, 9457 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:27:50,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:27:50,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:27:50,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:27:51,876 INFO L124 PetriNetUnfolderBase]: 3538/5976 cut-off events. [2024-06-28 02:27:51,876 INFO L125 PetriNetUnfolderBase]: For 1263060/1263060 co-relation queries the response was YES. [2024-06-28 02:27:51,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56554 conditions, 5976 events. 3538/5976 cut-off events. For 1263060/1263060 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 41092 event pairs, 696 based on Foata normal form. 1/5969 useless extension candidates. Maximal degree in co-relation 56356. Up to 5085 conditions per place. [2024-06-28 02:27:51,976 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 414 selfloop transitions, 180 changer transitions 0/602 dead transitions. [2024-06-28 02:27:51,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 602 transitions, 10939 flow [2024-06-28 02:27:51,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:27:51,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:27:51,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-28 02:27:51,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5853658536585366 [2024-06-28 02:27:51,977 INFO L175 Difference]: Start difference. First operand has 444 places, 583 transitions, 9457 flow. Second operand 8 states and 192 transitions. [2024-06-28 02:27:51,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 602 transitions, 10939 flow [2024-06-28 02:28:00,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 602 transitions, 10634 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-28 02:28:00,288 INFO L231 Difference]: Finished difference. Result has 448 places, 583 transitions, 9518 flow [2024-06-28 02:28:00,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9152, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9518, PETRI_PLACES=448, PETRI_TRANSITIONS=583} [2024-06-28 02:28:00,289 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 406 predicate places. [2024-06-28 02:28:00,289 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 583 transitions, 9518 flow [2024-06-28 02:28:00,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:28:00,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:00,289 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] [2024-06-28 02:28:00,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 02:28:00,289 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:28:00,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:00,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1771724815, now seen corresponding path program 13 times [2024-06-28 02:28:00,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:00,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311626277] [2024-06-28 02:28:00,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:00,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:00,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:00,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:00,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:00,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311626277] [2024-06-28 02:28:00,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311626277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:00,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:00,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:28:00,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18078090] [2024-06-28 02:28:00,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:00,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:28:00,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:00,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:28:00,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:28:00,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:28:00,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 583 transitions, 9518 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:28:00,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:00,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:28:00,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:01,826 INFO L124 PetriNetUnfolderBase]: 3548/5982 cut-off events. [2024-06-28 02:28:01,826 INFO L125 PetriNetUnfolderBase]: For 1288455/1288455 co-relation queries the response was YES. [2024-06-28 02:28:01,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56937 conditions, 5982 events. 3548/5982 cut-off events. For 1288455/1288455 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 41086 event pairs, 693 based on Foata normal form. 2/5976 useless extension candidates. Maximal degree in co-relation 56737. Up to 4673 conditions per place. [2024-06-28 02:28:01,926 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 317 selfloop transitions, 285 changer transitions 0/610 dead transitions. [2024-06-28 02:28:01,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 610 transitions, 11346 flow [2024-06-28 02:28:01,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:28:01,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:28:01,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-28 02:28:01,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6128048780487805 [2024-06-28 02:28:01,927 INFO L175 Difference]: Start difference. First operand has 448 places, 583 transitions, 9518 flow. Second operand 8 states and 201 transitions. [2024-06-28 02:28:01,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 610 transitions, 11346 flow [2024-06-28 02:28:10,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 610 transitions, 10990 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 02:28:10,122 INFO L231 Difference]: Finished difference. Result has 450 places, 587 transitions, 9807 flow [2024-06-28 02:28:10,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9162, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=281, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9807, PETRI_PLACES=450, PETRI_TRANSITIONS=587} [2024-06-28 02:28:10,123 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 408 predicate places. [2024-06-28 02:28:10,123 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 587 transitions, 9807 flow [2024-06-28 02:28:10,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:28:10,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:10,123 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] [2024-06-28 02:28:10,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 02:28:10,123 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:28:10,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:10,124 INFO L85 PathProgramCache]: Analyzing trace with hash 826195791, now seen corresponding path program 14 times [2024-06-28 02:28:10,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:10,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799548250] [2024-06-28 02:28:10,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:10,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:10,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:10,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:10,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:10,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799548250] [2024-06-28 02:28:10,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799548250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:10,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:10,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:28:10,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519716075] [2024-06-28 02:28:10,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:10,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:28:10,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:10,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:28:10,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:28:10,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:28:10,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 587 transitions, 9807 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:28:10,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:10,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:28:10,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:11,844 INFO L124 PetriNetUnfolderBase]: 3553/5979 cut-off events. [2024-06-28 02:28:11,845 INFO L125 PetriNetUnfolderBase]: For 1305037/1305037 co-relation queries the response was YES. [2024-06-28 02:28:11,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57268 conditions, 5979 events. 3553/5979 cut-off events. For 1305037/1305037 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 40966 event pairs, 676 based on Foata normal form. 1/5972 useless extension candidates. Maximal degree in co-relation 57068. Up to 5105 conditions per place. [2024-06-28 02:28:11,940 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 434 selfloop transitions, 170 changer transitions 0/612 dead transitions. [2024-06-28 02:28:11,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 612 transitions, 11356 flow [2024-06-28 02:28:11,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:28:11,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:28:11,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 02:28:11,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5945121951219512 [2024-06-28 02:28:11,941 INFO L175 Difference]: Start difference. First operand has 450 places, 587 transitions, 9807 flow. Second operand 8 states and 195 transitions. [2024-06-28 02:28:11,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 612 transitions, 11356 flow [2024-06-28 02:28:19,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 612 transitions, 10602 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-28 02:28:19,379 INFO L231 Difference]: Finished difference. Result has 451 places, 590 transitions, 9434 flow [2024-06-28 02:28:19,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9055, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9434, PETRI_PLACES=451, PETRI_TRANSITIONS=590} [2024-06-28 02:28:19,379 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 409 predicate places. [2024-06-28 02:28:19,380 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 590 transitions, 9434 flow [2024-06-28 02:28:19,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:28:19,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:19,380 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] [2024-06-28 02:28:19,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 02:28:19,380 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:28:19,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:19,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1150937097, now seen corresponding path program 14 times [2024-06-28 02:28:19,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:19,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451661948] [2024-06-28 02:28:19,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:19,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:19,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:19,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:19,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:19,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451661948] [2024-06-28 02:28:19,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451661948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:19,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:19,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:28:19,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128749670] [2024-06-28 02:28:19,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:19,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:28:19,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:19,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:28:19,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:28:19,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:28:19,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 590 transitions, 9434 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:28:19,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:19,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:28:19,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:21,043 INFO L124 PetriNetUnfolderBase]: 3563/6009 cut-off events. [2024-06-28 02:28:21,044 INFO L125 PetriNetUnfolderBase]: For 1327257/1327257 co-relation queries the response was YES. [2024-06-28 02:28:21,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56882 conditions, 6009 events. 3563/6009 cut-off events. For 1327257/1327257 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 41319 event pairs, 693 based on Foata normal form. 2/6003 useless extension candidates. Maximal degree in co-relation 56682. Up to 4687 conditions per place. [2024-06-28 02:28:21,142 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 328 selfloop transitions, 279 changer transitions 0/615 dead transitions. [2024-06-28 02:28:21,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 615 transitions, 11509 flow [2024-06-28 02:28:21,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:28:21,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:28:21,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-28 02:28:21,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6128048780487805 [2024-06-28 02:28:21,143 INFO L175 Difference]: Start difference. First operand has 451 places, 590 transitions, 9434 flow. Second operand 8 states and 201 transitions. [2024-06-28 02:28:21,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 615 transitions, 11509 flow [2024-06-28 02:28:29,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 615 transitions, 11278 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 02:28:29,821 INFO L231 Difference]: Finished difference. Result has 453 places, 594 transitions, 9817 flow [2024-06-28 02:28:29,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9203, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9817, PETRI_PLACES=453, PETRI_TRANSITIONS=594} [2024-06-28 02:28:29,821 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 411 predicate places. [2024-06-28 02:28:29,822 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 594 transitions, 9817 flow [2024-06-28 02:28:29,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:28:29,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:29,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:28:29,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 02:28:29,822 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:28:29,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:29,823 INFO L85 PathProgramCache]: Analyzing trace with hash 871984521, now seen corresponding path program 15 times [2024-06-28 02:28:29,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:29,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227585869] [2024-06-28 02:28:29,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:29,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:29,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:29,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:29,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:29,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227585869] [2024-06-28 02:28:29,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227585869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:29,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:29,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:28:29,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707243390] [2024-06-28 02:28:29,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:29,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:28:29,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:29,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:28:29,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:28:29,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:28:29,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 594 transitions, 9817 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:28:29,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:29,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:28:29,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:31,488 INFO L124 PetriNetUnfolderBase]: 3560/6017 cut-off events. [2024-06-28 02:28:31,488 INFO L125 PetriNetUnfolderBase]: For 1333165/1333165 co-relation queries the response was YES. [2024-06-28 02:28:31,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57230 conditions, 6017 events. 3560/6017 cut-off events. For 1333165/1333165 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 41486 event pairs, 696 based on Foata normal form. 1/6010 useless extension candidates. Maximal degree in co-relation 57029. Up to 5116 conditions per place. [2024-06-28 02:28:31,584 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 439 selfloop transitions, 167 changer transitions 0/614 dead transitions. [2024-06-28 02:28:31,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 614 transitions, 11589 flow [2024-06-28 02:28:31,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:28:31,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:28:31,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 02:28:31,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5914634146341463 [2024-06-28 02:28:31,586 INFO L175 Difference]: Start difference. First operand has 453 places, 594 transitions, 9817 flow. Second operand 8 states and 194 transitions. [2024-06-28 02:28:31,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 614 transitions, 11589 flow [2024-06-28 02:28:39,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 614 transitions, 11016 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 02:28:39,043 INFO L231 Difference]: Finished difference. Result has 455 places, 594 transitions, 9584 flow [2024-06-28 02:28:39,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9244, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9584, PETRI_PLACES=455, PETRI_TRANSITIONS=594} [2024-06-28 02:28:39,044 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 413 predicate places. [2024-06-28 02:28:39,044 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 594 transitions, 9584 flow [2024-06-28 02:28:39,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:28:39,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:39,045 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] [2024-06-28 02:28:39,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 02:28:39,045 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:28:39,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:39,045 INFO L85 PathProgramCache]: Analyzing trace with hash 872163267, now seen corresponding path program 15 times [2024-06-28 02:28:39,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:39,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182162562] [2024-06-28 02:28:39,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:39,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:39,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:39,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:39,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:39,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182162562] [2024-06-28 02:28:39,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182162562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:39,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:39,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:28:39,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196030657] [2024-06-28 02:28:39,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:39,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:28:39,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:39,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:28:39,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:28:39,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:28:39,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 594 transitions, 9584 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:28:39,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:39,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:28:39,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:40,715 INFO L124 PetriNetUnfolderBase]: 3554/6009 cut-off events. [2024-06-28 02:28:40,715 INFO L125 PetriNetUnfolderBase]: For 1343058/1343058 co-relation queries the response was YES. [2024-06-28 02:28:40,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56793 conditions, 6009 events. 3554/6009 cut-off events. For 1343058/1343058 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 41401 event pairs, 703 based on Foata normal form. 2/6003 useless extension candidates. Maximal degree in co-relation 56591. Up to 4680 conditions per place. [2024-06-28 02:28:40,814 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 326 selfloop transitions, 280 changer transitions 0/614 dead transitions. [2024-06-28 02:28:40,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 614 transitions, 11360 flow [2024-06-28 02:28:40,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:28:40,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:28:40,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 02:28:40,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6067073170731707 [2024-06-28 02:28:40,815 INFO L175 Difference]: Start difference. First operand has 455 places, 594 transitions, 9584 flow. Second operand 8 states and 199 transitions. [2024-06-28 02:28:40,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 614 transitions, 11360 flow [2024-06-28 02:28:49,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 614 transitions, 10996 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 02:28:49,665 INFO L231 Difference]: Finished difference. Result has 457 places, 594 transitions, 9787 flow [2024-06-28 02:28:49,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9220, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=280, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9787, PETRI_PLACES=457, PETRI_TRANSITIONS=594} [2024-06-28 02:28:49,665 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 415 predicate places. [2024-06-28 02:28:49,666 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 594 transitions, 9787 flow [2024-06-28 02:28:49,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:28:49,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:49,666 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] [2024-06-28 02:28:49,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 02:28:49,666 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:28:49,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:49,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1150936911, now seen corresponding path program 16 times [2024-06-28 02:28:49,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:49,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155672600] [2024-06-28 02:28:49,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:49,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:49,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:49,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:49,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:49,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155672600] [2024-06-28 02:28:49,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155672600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:49,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:49,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:28:49,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141062146] [2024-06-28 02:28:49,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:49,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:28:49,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:49,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:28:49,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:28:49,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:28:49,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 594 transitions, 9787 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:28:49,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:49,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:28:49,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:28:51,413 INFO L124 PetriNetUnfolderBase]: 3551/5981 cut-off events. [2024-06-28 02:28:51,414 INFO L125 PetriNetUnfolderBase]: For 1350730/1350730 co-relation queries the response was YES. [2024-06-28 02:28:51,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57021 conditions, 5981 events. 3551/5981 cut-off events. For 1350730/1350730 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 41043 event pairs, 676 based on Foata normal form. 1/5974 useless extension candidates. Maximal degree in co-relation 56819. Up to 5105 conditions per place. [2024-06-28 02:28:51,512 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 439 selfloop transitions, 168 changer transitions 0/615 dead transitions. [2024-06-28 02:28:51,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 615 transitions, 11311 flow [2024-06-28 02:28:51,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:28:51,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:28:51,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 232 transitions. [2024-06-28 02:28:51,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5658536585365853 [2024-06-28 02:28:51,513 INFO L175 Difference]: Start difference. First operand has 457 places, 594 transitions, 9787 flow. Second operand 10 states and 232 transitions. [2024-06-28 02:28:51,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 615 transitions, 11311 flow [2024-06-28 02:28:58,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 615 transitions, 10672 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 02:28:58,497 INFO L231 Difference]: Finished difference. Result has 459 places, 594 transitions, 9490 flow [2024-06-28 02:28:58,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9148, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9490, PETRI_PLACES=459, PETRI_TRANSITIONS=594} [2024-06-28 02:28:58,498 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 417 predicate places. [2024-06-28 02:28:58,498 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 594 transitions, 9490 flow [2024-06-28 02:28:58,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:28:58,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:28:58,499 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] [2024-06-28 02:28:58,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 02:28:58,499 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:28:58,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:28:58,499 INFO L85 PathProgramCache]: Analyzing trace with hash 322143625, now seen corresponding path program 17 times [2024-06-28 02:28:58,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:28:58,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335417988] [2024-06-28 02:28:58,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:28:58,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:28:58,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:28:58,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:28:58,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:28:58,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335417988] [2024-06-28 02:28:58,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335417988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:28:58,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:28:58,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:28:58,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263359040] [2024-06-28 02:28:58,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:28:58,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:28:58,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:28:58,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:28:58,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:28:58,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:28:58,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 594 transitions, 9490 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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) [2024-06-28 02:28:58,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:28:58,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:28:58,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:00,281 INFO L124 PetriNetUnfolderBase]: 3553/6020 cut-off events. [2024-06-28 02:29:00,281 INFO L125 PetriNetUnfolderBase]: For 1363124/1363124 co-relation queries the response was YES. [2024-06-28 02:29:00,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56781 conditions, 6020 events. 3553/6020 cut-off events. For 1363124/1363124 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 41475 event pairs, 678 based on Foata normal form. 2/6020 useless extension candidates. Maximal degree in co-relation 56578. Up to 5386 conditions per place. [2024-06-28 02:29:00,377 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 547 selfloop transitions, 58 changer transitions 0/613 dead transitions. [2024-06-28 02:29:00,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 613 transitions, 11050 flow [2024-06-28 02:29:00,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:29:00,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:29:00,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-28 02:29:00,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5762195121951219 [2024-06-28 02:29:00,379 INFO L175 Difference]: Start difference. First operand has 459 places, 594 transitions, 9490 flow. Second operand 8 states and 189 transitions. [2024-06-28 02:29:00,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 613 transitions, 11050 flow [2024-06-28 02:29:08,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 613 transitions, 10583 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 02:29:08,351 INFO L231 Difference]: Finished difference. Result has 457 places, 597 transitions, 9199 flow [2024-06-28 02:29:08,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9023, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9199, PETRI_PLACES=457, PETRI_TRANSITIONS=597} [2024-06-28 02:29:08,352 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 415 predicate places. [2024-06-28 02:29:08,352 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 597 transitions, 9199 flow [2024-06-28 02:29:08,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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) [2024-06-28 02:29:08,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:08,352 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] [2024-06-28 02:29:08,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 02:29:08,352 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:29:08,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:08,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1314973057, now seen corresponding path program 16 times [2024-06-28 02:29:08,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:08,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123770260] [2024-06-28 02:29:08,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:08,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:08,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:08,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:08,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:08,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123770260] [2024-06-28 02:29:08,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123770260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:08,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:08,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:29:08,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507082613] [2024-06-28 02:29:08,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:08,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:29:08,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:08,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:29:08,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:29:08,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:29:08,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 597 transitions, 9199 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:29:08,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:08,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:29:08,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:10,091 INFO L124 PetriNetUnfolderBase]: 3595/6078 cut-off events. [2024-06-28 02:29:10,091 INFO L125 PetriNetUnfolderBase]: For 1416750/1416750 co-relation queries the response was YES. [2024-06-28 02:29:10,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57528 conditions, 6078 events. 3595/6078 cut-off events. For 1416750/1416750 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 41878 event pairs, 668 based on Foata normal form. 2/6078 useless extension candidates. Maximal degree in co-relation 57324. Up to 5392 conditions per place. [2024-06-28 02:29:10,196 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 544 selfloop transitions, 78 changer transitions 0/630 dead transitions. [2024-06-28 02:29:10,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 630 transitions, 11521 flow [2024-06-28 02:29:10,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:29:10,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:29:10,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-28 02:29:10,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5745257452574526 [2024-06-28 02:29:10,197 INFO L175 Difference]: Start difference. First operand has 457 places, 597 transitions, 9199 flow. Second operand 9 states and 212 transitions. [2024-06-28 02:29:10,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 630 transitions, 11521 flow [2024-06-28 02:29:19,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 630 transitions, 11387 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 02:29:19,156 INFO L231 Difference]: Finished difference. Result has 461 places, 611 transitions, 9516 flow [2024-06-28 02:29:19,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9065, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9516, PETRI_PLACES=461, PETRI_TRANSITIONS=611} [2024-06-28 02:29:19,156 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 419 predicate places. [2024-06-28 02:29:19,157 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 611 transitions, 9516 flow [2024-06-28 02:29:19,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:29:19,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:19,158 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] [2024-06-28 02:29:19,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 02:29:19,158 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:29:19,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:19,159 INFO L85 PathProgramCache]: Analyzing trace with hash 321936235, now seen corresponding path program 18 times [2024-06-28 02:29:19,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:19,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569663229] [2024-06-28 02:29:19,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:19,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:19,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:19,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:19,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569663229] [2024-06-28 02:29:19,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569663229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:19,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:19,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:29:19,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77506355] [2024-06-28 02:29:19,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:19,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:29:19,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:19,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:29:19,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:29:19,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:29:19,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 611 transitions, 9516 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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) [2024-06-28 02:29:19,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:19,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:29:19,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:20,908 INFO L124 PetriNetUnfolderBase]: 3589/6082 cut-off events. [2024-06-28 02:29:20,908 INFO L125 PetriNetUnfolderBase]: For 1418077/1418077 co-relation queries the response was YES. [2024-06-28 02:29:20,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57514 conditions, 6082 events. 3589/6082 cut-off events. For 1418077/1418077 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 42053 event pairs, 678 based on Foata normal form. 2/6082 useless extension candidates. Maximal degree in co-relation 57308. Up to 5438 conditions per place. [2024-06-28 02:29:21,005 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 562 selfloop transitions, 56 changer transitions 0/626 dead transitions. [2024-06-28 02:29:21,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 626 transitions, 10788 flow [2024-06-28 02:29:21,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:29:21,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:29:21,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-28 02:29:21,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5701219512195121 [2024-06-28 02:29:21,006 INFO L175 Difference]: Start difference. First operand has 461 places, 611 transitions, 9516 flow. Second operand 8 states and 187 transitions. [2024-06-28 02:29:21,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 626 transitions, 10788 flow [2024-06-28 02:29:30,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 626 transitions, 10666 flow, removed 47 selfloop flow, removed 3 redundant places. [2024-06-28 02:29:30,695 INFO L231 Difference]: Finished difference. Result has 466 places, 611 transitions, 9516 flow [2024-06-28 02:29:30,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9394, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=555, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9516, PETRI_PLACES=466, PETRI_TRANSITIONS=611} [2024-06-28 02:29:30,696 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 424 predicate places. [2024-06-28 02:29:30,696 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 611 transitions, 9516 flow [2024-06-28 02:29:30,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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) [2024-06-28 02:29:30,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:30,697 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] [2024-06-28 02:29:30,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 02:29:30,697 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:29:30,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:30,697 INFO L85 PathProgramCache]: Analyzing trace with hash 321936421, now seen corresponding path program 17 times [2024-06-28 02:29:30,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:30,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290522799] [2024-06-28 02:29:30,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:30,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:30,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:30,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:30,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290522799] [2024-06-28 02:29:30,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290522799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:30,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:30,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:29:30,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134000532] [2024-06-28 02:29:30,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:30,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:29:30,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:30,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:29:30,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:29:30,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:29:30,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 611 transitions, 9516 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:29:30,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:30,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:29:30,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:32,503 INFO L124 PetriNetUnfolderBase]: 3583/6090 cut-off events. [2024-06-28 02:29:32,503 INFO L125 PetriNetUnfolderBase]: For 1419734/1419734 co-relation queries the response was YES. [2024-06-28 02:29:32,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57378 conditions, 6090 events. 3583/6090 cut-off events. For 1419734/1419734 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 42196 event pairs, 690 based on Foata normal form. 2/6090 useless extension candidates. Maximal degree in co-relation 57170. Up to 5382 conditions per place. [2024-06-28 02:29:32,603 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 541 selfloop transitions, 80 changer transitions 0/629 dead transitions. [2024-06-28 02:29:32,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 629 transitions, 11336 flow [2024-06-28 02:29:32,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:29:32,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:29:32,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 210 transitions. [2024-06-28 02:29:32,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5691056910569106 [2024-06-28 02:29:32,605 INFO L175 Difference]: Start difference. First operand has 466 places, 611 transitions, 9516 flow. Second operand 9 states and 210 transitions. [2024-06-28 02:29:32,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 629 transitions, 11336 flow [2024-06-28 02:29:41,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 629 transitions, 11182 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 02:29:41,584 INFO L231 Difference]: Finished difference. Result has 468 places, 611 transitions, 9529 flow [2024-06-28 02:29:41,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9362, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9529, PETRI_PLACES=468, PETRI_TRANSITIONS=611} [2024-06-28 02:29:41,588 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 426 predicate places. [2024-06-28 02:29:41,588 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 611 transitions, 9529 flow [2024-06-28 02:29:41,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:29:41,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:41,588 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] [2024-06-28 02:29:41,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 02:29:41,589 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:29:41,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:41,589 INFO L85 PathProgramCache]: Analyzing trace with hash 401524193, now seen corresponding path program 18 times [2024-06-28 02:29:41,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:41,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448418648] [2024-06-28 02:29:41,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:41,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:41,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:41,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:41,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:41,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448418648] [2024-06-28 02:29:41,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448418648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:41,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:41,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:29:41,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106849471] [2024-06-28 02:29:41,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:41,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:29:41,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:41,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:29:41,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:29:41,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:29:41,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 611 transitions, 9529 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:29:41,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:41,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:29:41,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:43,306 INFO L124 PetriNetUnfolderBase]: 3617/6123 cut-off events. [2024-06-28 02:29:43,306 INFO L125 PetriNetUnfolderBase]: For 1470975/1470975 co-relation queries the response was YES. [2024-06-28 02:29:43,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58311 conditions, 6123 events. 3617/6123 cut-off events. For 1470975/1470975 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 42328 event pairs, 670 based on Foata normal form. 2/6123 useless extension candidates. Maximal degree in co-relation 58102. Up to 5069 conditions per place. [2024-06-28 02:29:43,407 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 454 selfloop transitions, 193 changer transitions 0/655 dead transitions. [2024-06-28 02:29:43,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 655 transitions, 11949 flow [2024-06-28 02:29:43,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:29:43,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:29:43,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-28 02:29:43,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6205962059620597 [2024-06-28 02:29:43,409 INFO L175 Difference]: Start difference. First operand has 468 places, 611 transitions, 9529 flow. Second operand 9 states and 229 transitions. [2024-06-28 02:29:43,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 655 transitions, 11949 flow [2024-06-28 02:29:51,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 655 transitions, 11803 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 02:29:51,631 INFO L231 Difference]: Finished difference. Result has 471 places, 624 transitions, 10144 flow [2024-06-28 02:29:51,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9383, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10144, PETRI_PLACES=471, PETRI_TRANSITIONS=624} [2024-06-28 02:29:51,632 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 429 predicate places. [2024-06-28 02:29:51,632 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 624 transitions, 10144 flow [2024-06-28 02:29:51,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:29:51,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:29:51,632 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] [2024-06-28 02:29:51,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 02:29:51,632 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:29:51,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:29:51,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1281807379, now seen corresponding path program 19 times [2024-06-28 02:29:51,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:29:51,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173052499] [2024-06-28 02:29:51,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:29:51,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:29:51,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:29:51,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:29:51,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:29:51,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173052499] [2024-06-28 02:29:51,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173052499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:29:51,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:29:51,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:29:51,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13959563] [2024-06-28 02:29:51,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:29:51,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:29:51,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:29:51,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:29:51,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:29:51,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:29:51,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 624 transitions, 10144 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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) [2024-06-28 02:29:51,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:29:51,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:29:51,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:29:53,372 INFO L124 PetriNetUnfolderBase]: 3619/6112 cut-off events. [2024-06-28 02:29:53,372 INFO L125 PetriNetUnfolderBase]: For 1488780/1488780 co-relation queries the response was YES. [2024-06-28 02:29:53,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59019 conditions, 6112 events. 3619/6112 cut-off events. For 1488780/1488780 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 42154 event pairs, 658 based on Foata normal form. 2/6112 useless extension candidates. Maximal degree in co-relation 58808. Up to 5220 conditions per place. [2024-06-28 02:29:53,615 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 492 selfloop transitions, 158 changer transitions 0/658 dead transitions. [2024-06-28 02:29:53,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 658 transitions, 11856 flow [2024-06-28 02:29:53,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:29:53,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:29:53,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-28 02:29:53,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6371951219512195 [2024-06-28 02:29:53,617 INFO L175 Difference]: Start difference. First operand has 471 places, 624 transitions, 10144 flow. Second operand 8 states and 209 transitions. [2024-06-28 02:29:53,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 658 transitions, 11856 flow [2024-06-28 02:30:01,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 658 transitions, 11718 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-06-28 02:30:01,841 INFO L231 Difference]: Finished difference. Result has 475 places, 627 transitions, 10409 flow [2024-06-28 02:30:01,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10008, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10409, PETRI_PLACES=475, PETRI_TRANSITIONS=627} [2024-06-28 02:30:01,842 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 433 predicate places. [2024-06-28 02:30:01,843 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 627 transitions, 10409 flow [2024-06-28 02:30:01,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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) [2024-06-28 02:30:01,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:01,843 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] [2024-06-28 02:30:01,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 02:30:01,843 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:30:01,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:01,844 INFO L85 PathProgramCache]: Analyzing trace with hash -101251227, now seen corresponding path program 19 times [2024-06-28 02:30:01,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:01,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980072442] [2024-06-28 02:30:01,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:01,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:01,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:01,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:01,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980072442] [2024-06-28 02:30:01,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980072442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:01,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:01,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:30:01,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649413183] [2024-06-28 02:30:01,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:01,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:30:01,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:01,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:30:01,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:30:01,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:30:01,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 627 transitions, 10409 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:30:01,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:01,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:30:01,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:03,622 INFO L124 PetriNetUnfolderBase]: 3632/6151 cut-off events. [2024-06-28 02:30:03,622 INFO L125 PetriNetUnfolderBase]: For 1490540/1490543 co-relation queries the response was YES. [2024-06-28 02:30:03,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59703 conditions, 6151 events. 3632/6151 cut-off events. For 1490540/1490543 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 42577 event pairs, 679 based on Foata normal form. 3/6151 useless extension candidates. Maximal degree in co-relation 59491. Up to 5083 conditions per place. [2024-06-28 02:30:03,726 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 440 selfloop transitions, 210 changer transitions 0/658 dead transitions. [2024-06-28 02:30:03,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 658 transitions, 12996 flow [2024-06-28 02:30:03,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:30:03,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:30:03,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-28 02:30:03,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6158536585365854 [2024-06-28 02:30:03,727 INFO L175 Difference]: Start difference. First operand has 475 places, 627 transitions, 10409 flow. Second operand 8 states and 202 transitions. [2024-06-28 02:30:03,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 658 transitions, 12996 flow [2024-06-28 02:30:12,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 658 transitions, 12642 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-28 02:30:12,961 INFO L231 Difference]: Finished difference. Result has 475 places, 633 transitions, 10636 flow [2024-06-28 02:30:12,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10071, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10636, PETRI_PLACES=475, PETRI_TRANSITIONS=633} [2024-06-28 02:30:12,961 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 433 predicate places. [2024-06-28 02:30:12,961 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 633 transitions, 10636 flow [2024-06-28 02:30:12,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:30:12,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:12,962 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] [2024-06-28 02:30:12,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 02:30:12,962 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:30:12,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:12,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1282014769, now seen corresponding path program 20 times [2024-06-28 02:30:12,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:12,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518017860] [2024-06-28 02:30:12,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:12,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:12,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:13,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:13,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:13,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518017860] [2024-06-28 02:30:13,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518017860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:13,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:13,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:30:13,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409872043] [2024-06-28 02:30:13,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:13,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:30:13,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:13,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:30:13,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:30:13,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:30:13,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 633 transitions, 10636 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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) [2024-06-28 02:30:13,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:13,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:30:13,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:14,684 INFO L124 PetriNetUnfolderBase]: 3634/6151 cut-off events. [2024-06-28 02:30:14,684 INFO L125 PetriNetUnfolderBase]: For 1468885/1468885 co-relation queries the response was YES. [2024-06-28 02:30:14,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59578 conditions, 6151 events. 3634/6151 cut-off events. For 1468885/1468885 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 42549 event pairs, 668 based on Foata normal form. 2/6151 useless extension candidates. Maximal degree in co-relation 59367. Up to 5241 conditions per place. [2024-06-28 02:30:14,943 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 505 selfloop transitions, 154 changer transitions 0/667 dead transitions. [2024-06-28 02:30:14,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 667 transitions, 12370 flow [2024-06-28 02:30:14,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:30:14,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:30:14,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-28 02:30:14,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6371951219512195 [2024-06-28 02:30:14,944 INFO L175 Difference]: Start difference. First operand has 475 places, 633 transitions, 10636 flow. Second operand 8 states and 209 transitions. [2024-06-28 02:30:14,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 667 transitions, 12370 flow [2024-06-28 02:30:23,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 667 transitions, 11732 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-06-28 02:30:23,523 INFO L231 Difference]: Finished difference. Result has 478 places, 636 transitions, 10399 flow [2024-06-28 02:30:23,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10001, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10399, PETRI_PLACES=478, PETRI_TRANSITIONS=636} [2024-06-28 02:30:23,524 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 436 predicate places. [2024-06-28 02:30:23,524 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 636 transitions, 10399 flow [2024-06-28 02:30:23,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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) [2024-06-28 02:30:23,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:23,525 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] [2024-06-28 02:30:23,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-28 02:30:23,525 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:30:23,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:23,525 INFO L85 PathProgramCache]: Analyzing trace with hash 401138243, now seen corresponding path program 20 times [2024-06-28 02:30:23,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:23,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616578354] [2024-06-28 02:30:23,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:23,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:23,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:23,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:23,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616578354] [2024-06-28 02:30:23,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616578354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:23,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:23,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:30:23,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214585057] [2024-06-28 02:30:23,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:23,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:30:23,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:23,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:30:23,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:30:23,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:30:23,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 636 transitions, 10399 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:30:23,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:23,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:30:23,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:25,479 INFO L124 PetriNetUnfolderBase]: 3628/6155 cut-off events. [2024-06-28 02:30:25,479 INFO L125 PetriNetUnfolderBase]: For 1466543/1466543 co-relation queries the response was YES. [2024-06-28 02:30:25,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59213 conditions, 6155 events. 3628/6155 cut-off events. For 1466543/1466543 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 42716 event pairs, 678 based on Foata normal form. 2/6155 useless extension candidates. Maximal degree in co-relation 59001. Up to 5082 conditions per place. [2024-06-28 02:30:25,576 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 452 selfloop transitions, 209 changer transitions 0/669 dead transitions. [2024-06-28 02:30:25,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 669 transitions, 12347 flow [2024-06-28 02:30:25,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:30:25,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:30:25,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 231 transitions. [2024-06-28 02:30:25,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6260162601626016 [2024-06-28 02:30:25,577 INFO L175 Difference]: Start difference. First operand has 478 places, 636 transitions, 10399 flow. Second operand 9 states and 231 transitions. [2024-06-28 02:30:25,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 669 transitions, 12347 flow [2024-06-28 02:30:33,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 669 transitions, 12070 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-28 02:30:33,683 INFO L231 Difference]: Finished difference. Result has 480 places, 636 transitions, 10560 flow [2024-06-28 02:30:33,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10130, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10560, PETRI_PLACES=480, PETRI_TRANSITIONS=636} [2024-06-28 02:30:33,684 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 438 predicate places. [2024-06-28 02:30:33,684 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 636 transitions, 10560 flow [2024-06-28 02:30:33,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:30:33,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:33,684 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] [2024-06-28 02:30:33,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-28 02:30:33,684 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:30:33,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:33,685 INFO L85 PathProgramCache]: Analyzing trace with hash -623936031, now seen corresponding path program 21 times [2024-06-28 02:30:33,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:33,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981864167] [2024-06-28 02:30:33,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:33,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:33,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:33,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:33,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:33,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981864167] [2024-06-28 02:30:33,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981864167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:33,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:33,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:30:33,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005477574] [2024-06-28 02:30:33,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:33,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:30:33,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:33,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:30:33,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:30:33,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:30:33,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 636 transitions, 10560 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:30:33,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:33,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:30:33,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:35,406 INFO L124 PetriNetUnfolderBase]: 3633/6141 cut-off events. [2024-06-28 02:30:35,406 INFO L125 PetriNetUnfolderBase]: For 1442703/1442706 co-relation queries the response was YES. [2024-06-28 02:30:35,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59270 conditions, 6141 events. 3633/6141 cut-off events. For 1442703/1442706 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 42469 event pairs, 667 based on Foata normal form. 3/6141 useless extension candidates. Maximal degree in co-relation 59059. Up to 5086 conditions per place. [2024-06-28 02:30:35,505 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 443 selfloop transitions, 216 changer transitions 0/667 dead transitions. [2024-06-28 02:30:35,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 667 transitions, 13081 flow [2024-06-28 02:30:35,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:30:35,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:30:35,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 02:30:35,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-28 02:30:35,506 INFO L175 Difference]: Start difference. First operand has 480 places, 636 transitions, 10560 flow. Second operand 8 states and 205 transitions. [2024-06-28 02:30:35,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 667 transitions, 13081 flow [2024-06-28 02:30:44,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 667 transitions, 12678 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 02:30:44,391 INFO L231 Difference]: Finished difference. Result has 480 places, 639 transitions, 10658 flow [2024-06-28 02:30:44,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10169, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10658, PETRI_PLACES=480, PETRI_TRANSITIONS=639} [2024-06-28 02:30:44,391 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 438 predicate places. [2024-06-28 02:30:44,391 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 639 transitions, 10658 flow [2024-06-28 02:30:44,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:30:44,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:44,392 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] [2024-06-28 02:30:44,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-28 02:30:44,392 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:30:44,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:44,392 INFO L85 PathProgramCache]: Analyzing trace with hash -400796481, now seen corresponding path program 22 times [2024-06-28 02:30:44,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:44,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52894155] [2024-06-28 02:30:44,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:44,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:44,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:44,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:44,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52894155] [2024-06-28 02:30:44,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52894155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:44,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:44,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:30:44,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319227686] [2024-06-28 02:30:44,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:44,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:30:44,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:44,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:30:44,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:30:44,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:30:44,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 639 transitions, 10658 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:30:44,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:44,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:30:44,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:46,202 INFO L124 PetriNetUnfolderBase]: 3643/6168 cut-off events. [2024-06-28 02:30:46,202 INFO L125 PetriNetUnfolderBase]: For 1439883/1439883 co-relation queries the response was YES. [2024-06-28 02:30:46,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59432 conditions, 6168 events. 3643/6168 cut-off events. For 1439883/1439883 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 42712 event pairs, 668 based on Foata normal form. 1/6167 useless extension candidates. Maximal degree in co-relation 59221. Up to 5532 conditions per place. [2024-06-28 02:30:46,300 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 619 selfloop transitions, 35 changer transitions 0/662 dead transitions. [2024-06-28 02:30:46,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 662 transitions, 12115 flow [2024-06-28 02:30:46,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:30:46,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:30:46,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-28 02:30:46,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.578397212543554 [2024-06-28 02:30:46,301 INFO L175 Difference]: Start difference. First operand has 480 places, 639 transitions, 10658 flow. Second operand 7 states and 166 transitions. [2024-06-28 02:30:46,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 662 transitions, 12115 flow [2024-06-28 02:30:55,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 662 transitions, 11501 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 02:30:55,399 INFO L231 Difference]: Finished difference. Result has 480 places, 645 transitions, 10233 flow [2024-06-28 02:30:55,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10065, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=607, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10233, PETRI_PLACES=480, PETRI_TRANSITIONS=645} [2024-06-28 02:30:55,400 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 438 predicate places. [2024-06-28 02:30:55,400 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 645 transitions, 10233 flow [2024-06-28 02:30:55,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:30:55,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:30:55,400 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] [2024-06-28 02:30:55,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-28 02:30:55,400 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:30:55,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:30:55,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1958284139, now seen corresponding path program 23 times [2024-06-28 02:30:55,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:30:55,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084860050] [2024-06-28 02:30:55,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:30:55,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:30:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:30:55,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:30:55,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:30:55,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084860050] [2024-06-28 02:30:55,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084860050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:30:55,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:30:55,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:30:55,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569076618] [2024-06-28 02:30:55,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:30:55,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:30:55,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:30:55,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:30:55,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:30:55,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:30:55,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 645 transitions, 10233 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:30:55,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:30:55,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:30:55,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:30:57,140 INFO L124 PetriNetUnfolderBase]: 3640/6181 cut-off events. [2024-06-28 02:30:57,141 INFO L125 PetriNetUnfolderBase]: For 1444927/1444930 co-relation queries the response was YES. [2024-06-28 02:30:57,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58852 conditions, 6181 events. 3640/6181 cut-off events. For 1444927/1444930 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 43016 event pairs, 689 based on Foata normal form. 3/6181 useless extension candidates. Maximal degree in co-relation 58640. Up to 5092 conditions per place. [2024-06-28 02:30:57,239 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 443 selfloop transitions, 224 changer transitions 0/675 dead transitions. [2024-06-28 02:30:57,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 675 transitions, 12457 flow [2024-06-28 02:30:57,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:30:57,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:30:57,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-28 02:30:57,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6341463414634146 [2024-06-28 02:30:57,240 INFO L175 Difference]: Start difference. First operand has 480 places, 645 transitions, 10233 flow. Second operand 8 states and 208 transitions. [2024-06-28 02:30:57,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 675 transitions, 12457 flow [2024-06-28 02:31:04,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 675 transitions, 12345 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-28 02:31:04,408 INFO L231 Difference]: Finished difference. Result has 484 places, 645 transitions, 10575 flow [2024-06-28 02:31:04,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10121, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10575, PETRI_PLACES=484, PETRI_TRANSITIONS=645} [2024-06-28 02:31:04,408 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 442 predicate places. [2024-06-28 02:31:04,408 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 645 transitions, 10575 flow [2024-06-28 02:31:04,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:31:04,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:04,409 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] [2024-06-28 02:31:04,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-28 02:31:04,409 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:31:04,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:04,409 INFO L85 PathProgramCache]: Analyzing trace with hash -771931767, now seen corresponding path program 21 times [2024-06-28 02:31:04,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:04,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084656327] [2024-06-28 02:31:04,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:04,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:04,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:04,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:04,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084656327] [2024-06-28 02:31:04,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084656327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:04,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:04,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:31:04,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49790793] [2024-06-28 02:31:04,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:04,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:31:04,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:04,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:31:04,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:31:04,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:31:04,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 645 transitions, 10575 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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) [2024-06-28 02:31:04,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:04,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:31:04,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:06,218 INFO L124 PetriNetUnfolderBase]: 3634/6180 cut-off events. [2024-06-28 02:31:06,218 INFO L125 PetriNetUnfolderBase]: For 1454921/1454921 co-relation queries the response was YES. [2024-06-28 02:31:06,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59165 conditions, 6180 events. 3634/6180 cut-off events. For 1454921/1454921 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 43045 event pairs, 688 based on Foata normal form. 2/6180 useless extension candidates. Maximal degree in co-relation 58952. Up to 5403 conditions per place. [2024-06-28 02:31:06,317 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 581 selfloop transitions, 80 changer transitions 0/669 dead transitions. [2024-06-28 02:31:06,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 669 transitions, 11995 flow [2024-06-28 02:31:06,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:31:06,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:31:06,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2024-06-28 02:31:06,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6544715447154471 [2024-06-28 02:31:06,319 INFO L175 Difference]: Start difference. First operand has 484 places, 645 transitions, 10575 flow. Second operand 6 states and 161 transitions. [2024-06-28 02:31:06,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 669 transitions, 11995 flow [2024-06-28 02:31:14,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 669 transitions, 11525 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 02:31:14,972 INFO L231 Difference]: Finished difference. Result has 485 places, 647 transitions, 10394 flow [2024-06-28 02:31:14,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10109, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=10394, PETRI_PLACES=485, PETRI_TRANSITIONS=647} [2024-06-28 02:31:14,972 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 443 predicate places. [2024-06-28 02:31:14,972 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 647 transitions, 10394 flow [2024-06-28 02:31:14,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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) [2024-06-28 02:31:14,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:14,973 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] [2024-06-28 02:31:14,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-28 02:31:14,973 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:31:14,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:14,973 INFO L85 PathProgramCache]: Analyzing trace with hash -771694431, now seen corresponding path program 24 times [2024-06-28 02:31:14,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:14,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519844134] [2024-06-28 02:31:14,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:14,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:15,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:15,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:15,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519844134] [2024-06-28 02:31:15,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519844134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:15,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:15,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:31:15,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648649323] [2024-06-28 02:31:15,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:15,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:31:15,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:15,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:31:15,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:31:15,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:31:15,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 647 transitions, 10394 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:31:15,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:15,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:31:15,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:16,850 INFO L124 PetriNetUnfolderBase]: 3631/6176 cut-off events. [2024-06-28 02:31:16,851 INFO L125 PetriNetUnfolderBase]: For 1456940/1456940 co-relation queries the response was YES. [2024-06-28 02:31:16,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58935 conditions, 6176 events. 3631/6176 cut-off events. For 1456940/1456940 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 42993 event pairs, 688 based on Foata normal form. 1/6175 useless extension candidates. Maximal degree in co-relation 58720. Up to 5494 conditions per place. [2024-06-28 02:31:16,950 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 616 selfloop transitions, 52 changer transitions 0/676 dead transitions. [2024-06-28 02:31:16,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 676 transitions, 12078 flow [2024-06-28 02:31:16,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:31:16,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:31:16,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-06-28 02:31:16,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5853658536585366 [2024-06-28 02:31:16,952 INFO L175 Difference]: Start difference. First operand has 485 places, 647 transitions, 10394 flow. Second operand 9 states and 216 transitions. [2024-06-28 02:31:16,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 676 transitions, 12078 flow [2024-06-28 02:31:24,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 676 transitions, 11739 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-28 02:31:24,601 INFO L231 Difference]: Finished difference. Result has 486 places, 647 transitions, 10167 flow [2024-06-28 02:31:24,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10057, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=595, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10167, PETRI_PLACES=486, PETRI_TRANSITIONS=647} [2024-06-28 02:31:24,602 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 444 predicate places. [2024-06-28 02:31:24,602 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 647 transitions, 10167 flow [2024-06-28 02:31:24,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:31:24,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:24,602 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] [2024-06-28 02:31:24,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-28 02:31:24,602 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:31:24,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:24,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1962003209, now seen corresponding path program 25 times [2024-06-28 02:31:24,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:24,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697266040] [2024-06-28 02:31:24,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:24,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:24,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:24,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:24,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697266040] [2024-06-28 02:31:24,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697266040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:24,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:24,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:31:24,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806100341] [2024-06-28 02:31:24,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:24,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:31:24,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:24,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:31:24,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:31:24,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:31:24,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 647 transitions, 10167 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:31:24,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:24,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:31:24,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:26,467 INFO L124 PetriNetUnfolderBase]: 3628/6172 cut-off events. [2024-06-28 02:31:26,468 INFO L125 PetriNetUnfolderBase]: For 1444671/1444671 co-relation queries the response was YES. [2024-06-28 02:31:26,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58432 conditions, 6172 events. 3628/6172 cut-off events. For 1444671/1444671 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 42944 event pairs, 688 based on Foata normal form. 1/6171 useless extension candidates. Maximal degree in co-relation 58219. Up to 5491 conditions per place. [2024-06-28 02:31:26,567 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 614 selfloop transitions, 51 changer transitions 0/673 dead transitions. [2024-06-28 02:31:26,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 673 transitions, 11563 flow [2024-06-28 02:31:26,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:31:26,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:31:26,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 02:31:26,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6167247386759582 [2024-06-28 02:31:26,568 INFO L175 Difference]: Start difference. First operand has 486 places, 647 transitions, 10167 flow. Second operand 7 states and 177 transitions. [2024-06-28 02:31:26,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 673 transitions, 11563 flow [2024-06-28 02:31:34,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 673 transitions, 11313 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-28 02:31:34,893 INFO L231 Difference]: Finished difference. Result has 483 places, 647 transitions, 10025 flow [2024-06-28 02:31:34,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9917, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10025, PETRI_PLACES=483, PETRI_TRANSITIONS=647} [2024-06-28 02:31:34,894 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 441 predicate places. [2024-06-28 02:31:34,894 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 647 transitions, 10025 flow [2024-06-28 02:31:34,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:31:34,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:34,894 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] [2024-06-28 02:31:34,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-28 02:31:34,894 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:31:34,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:34,895 INFO L85 PathProgramCache]: Analyzing trace with hash -772023837, now seen corresponding path program 4 times [2024-06-28 02:31:34,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:34,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241077340] [2024-06-28 02:31:34,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:34,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:34,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:34,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:34,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:34,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241077340] [2024-06-28 02:31:34,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241077340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:34,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:34,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:31:34,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251444364] [2024-06-28 02:31:34,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:34,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:31:34,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:34,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:31:34,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:31:35,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:31:35,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 647 transitions, 10025 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:31:35,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:35,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:31:35,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:36,718 INFO L124 PetriNetUnfolderBase]: 3615/6157 cut-off events. [2024-06-28 02:31:36,718 INFO L125 PetriNetUnfolderBase]: For 1454489/1454489 co-relation queries the response was YES. [2024-06-28 02:31:36,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57524 conditions, 6157 events. 3615/6157 cut-off events. For 1454489/1454489 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 42874 event pairs, 601 based on Foata normal form. 6/6161 useless extension candidates. Maximal degree in co-relation 57310. Up to 5368 conditions per place. [2024-06-28 02:31:36,818 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 632 selfloop transitions, 40 changer transitions 0/680 dead transitions. [2024-06-28 02:31:36,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 680 transitions, 11493 flow [2024-06-28 02:31:36,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:31:36,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:31:36,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-28 02:31:36,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.627177700348432 [2024-06-28 02:31:36,819 INFO L175 Difference]: Start difference. First operand has 483 places, 647 transitions, 10025 flow. Second operand 7 states and 180 transitions. [2024-06-28 02:31:36,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 680 transitions, 11493 flow [2024-06-28 02:31:44,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 680 transitions, 11387 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 02:31:44,551 INFO L231 Difference]: Finished difference. Result has 484 places, 647 transitions, 10003 flow [2024-06-28 02:31:44,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9919, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=607, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10003, PETRI_PLACES=484, PETRI_TRANSITIONS=647} [2024-06-28 02:31:44,551 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 442 predicate places. [2024-06-28 02:31:44,552 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 647 transitions, 10003 flow [2024-06-28 02:31:44,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:31:44,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:44,552 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] [2024-06-28 02:31:44,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-28 02:31:44,552 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:31:44,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:44,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1857268731, now seen corresponding path program 3 times [2024-06-28 02:31:44,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:44,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708858069] [2024-06-28 02:31:44,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:44,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:44,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:44,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:44,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:44,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708858069] [2024-06-28 02:31:44,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708858069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:44,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:44,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:31:44,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879115875] [2024-06-28 02:31:44,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:44,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:31:44,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:44,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:31:44,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:31:44,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:31:44,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 647 transitions, 10003 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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) [2024-06-28 02:31:44,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:44,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:31:44,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:46,339 INFO L124 PetriNetUnfolderBase]: 3649/6199 cut-off events. [2024-06-28 02:31:46,339 INFO L125 PetriNetUnfolderBase]: For 1476429/1476429 co-relation queries the response was YES. [2024-06-28 02:31:46,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58669 conditions, 6199 events. 3649/6199 cut-off events. For 1476429/1476429 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 43100 event pairs, 686 based on Foata normal form. 2/6194 useless extension candidates. Maximal degree in co-relation 58454. Up to 5407 conditions per place. [2024-06-28 02:31:46,442 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 594 selfloop transitions, 74 changer transitions 0/676 dead transitions. [2024-06-28 02:31:46,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 676 transitions, 11811 flow [2024-06-28 02:31:46,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:31:46,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:31:46,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 02:31:46,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5993031358885017 [2024-06-28 02:31:46,443 INFO L175 Difference]: Start difference. First operand has 484 places, 647 transitions, 10003 flow. Second operand 7 states and 172 transitions. [2024-06-28 02:31:46,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 676 transitions, 11811 flow [2024-06-28 02:31:55,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 676 transitions, 11705 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 02:31:55,152 INFO L231 Difference]: Finished difference. Result has 487 places, 653 transitions, 10205 flow [2024-06-28 02:31:55,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9897, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=575, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10205, PETRI_PLACES=487, PETRI_TRANSITIONS=653} [2024-06-28 02:31:55,153 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 445 predicate places. [2024-06-28 02:31:55,153 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 653 transitions, 10205 flow [2024-06-28 02:31:55,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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) [2024-06-28 02:31:55,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:31:55,153 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] [2024-06-28 02:31:55,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-28 02:31:55,153 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:31:55,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:31:55,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1575251991, now seen corresponding path program 4 times [2024-06-28 02:31:55,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:31:55,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937411015] [2024-06-28 02:31:55,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:31:55,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:31:55,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:31:55,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:31:55,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:31:55,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937411015] [2024-06-28 02:31:55,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937411015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:31:55,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:31:55,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:31:55,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443359496] [2024-06-28 02:31:55,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:31:55,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:31:55,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:31:55,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:31:55,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:31:55,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:31:55,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 653 transitions, 10205 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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) [2024-06-28 02:31:55,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:31:55,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:31:55,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:31:56,995 INFO L124 PetriNetUnfolderBase]: 3657/6214 cut-off events. [2024-06-28 02:31:56,995 INFO L125 PetriNetUnfolderBase]: For 1497727/1497727 co-relation queries the response was YES. [2024-06-28 02:31:57,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59097 conditions, 6214 events. 3657/6214 cut-off events. For 1497727/1497727 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 43306 event pairs, 693 based on Foata normal form. 2/6211 useless extension candidates. Maximal degree in co-relation 58880. Up to 5461 conditions per place. [2024-06-28 02:31:57,094 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 596 selfloop transitions, 69 changer transitions 0/673 dead transitions. [2024-06-28 02:31:57,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 673 transitions, 11631 flow [2024-06-28 02:31:57,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:31:57,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:31:57,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-28 02:31:57,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5853658536585366 [2024-06-28 02:31:57,096 INFO L175 Difference]: Start difference. First operand has 487 places, 653 transitions, 10205 flow. Second operand 7 states and 168 transitions. [2024-06-28 02:31:57,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 673 transitions, 11631 flow [2024-06-28 02:32:06,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 673 transitions, 11445 flow, removed 52 selfloop flow, removed 3 redundant places. [2024-06-28 02:32:06,408 INFO L231 Difference]: Finished difference. Result has 491 places, 655 transitions, 10218 flow [2024-06-28 02:32:06,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10041, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=653, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=584, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10218, PETRI_PLACES=491, PETRI_TRANSITIONS=655} [2024-06-28 02:32:06,409 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 449 predicate places. [2024-06-28 02:32:06,409 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 655 transitions, 10218 flow [2024-06-28 02:32:06,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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) [2024-06-28 02:32:06,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:06,409 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] [2024-06-28 02:32:06,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-28 02:32:06,410 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:32:06,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:06,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1151152237, now seen corresponding path program 5 times [2024-06-28 02:32:06,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:06,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189918685] [2024-06-28 02:32:06,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:06,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:06,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:06,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:06,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189918685] [2024-06-28 02:32:06,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189918685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:06,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:06,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:32:06,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079081914] [2024-06-28 02:32:06,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:06,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:32:06,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:06,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:32:06,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:32:06,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:32:06,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 655 transitions, 10218 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:32:06,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:06,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:32:06,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:08,396 INFO L124 PetriNetUnfolderBase]: 3652/6207 cut-off events. [2024-06-28 02:32:08,397 INFO L125 PetriNetUnfolderBase]: For 1497017/1497017 co-relation queries the response was YES. [2024-06-28 02:32:08,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58850 conditions, 6207 events. 3652/6207 cut-off events. For 1497017/1497017 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 43218 event pairs, 692 based on Foata normal form. 2/6204 useless extension candidates. Maximal degree in co-relation 58631. Up to 5454 conditions per place. [2024-06-28 02:32:08,502 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 597 selfloop transitions, 69 changer transitions 0/674 dead transitions. [2024-06-28 02:32:08,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 674 transitions, 11596 flow [2024-06-28 02:32:08,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:32:08,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:32:08,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-28 02:32:08,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5701219512195121 [2024-06-28 02:32:08,503 INFO L175 Difference]: Start difference. First operand has 491 places, 655 transitions, 10218 flow. Second operand 8 states and 187 transitions. [2024-06-28 02:32:08,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 674 transitions, 11596 flow [2024-06-28 02:32:18,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 674 transitions, 11427 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 02:32:18,231 INFO L231 Difference]: Finished difference. Result has 494 places, 655 transitions, 10192 flow [2024-06-28 02:32:18,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10049, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=586, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10192, PETRI_PLACES=494, PETRI_TRANSITIONS=655} [2024-06-28 02:32:18,253 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 452 predicate places. [2024-06-28 02:32:18,254 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 655 transitions, 10192 flow [2024-06-28 02:32:18,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:32:18,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:18,254 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] [2024-06-28 02:32:18,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-28 02:32:18,254 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:32:18,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:18,254 INFO L85 PathProgramCache]: Analyzing trace with hash 872177155, now seen corresponding path program 5 times [2024-06-28 02:32:18,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:18,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603062637] [2024-06-28 02:32:18,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:18,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:18,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:18,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:18,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603062637] [2024-06-28 02:32:18,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603062637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:18,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:18,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:32:18,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934443233] [2024-06-28 02:32:18,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:18,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:32:18,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:18,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:32:18,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:32:18,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:32:18,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 655 transitions, 10192 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:32:18,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:18,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:32:18,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:20,006 INFO L124 PetriNetUnfolderBase]: 3629/6174 cut-off events. [2024-06-28 02:32:20,006 INFO L125 PetriNetUnfolderBase]: For 1496429/1496429 co-relation queries the response was YES. [2024-06-28 02:32:20,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57257 conditions, 6174 events. 3629/6174 cut-off events. For 1496429/1496429 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 43037 event pairs, 687 based on Foata normal form. 10/6179 useless extension candidates. Maximal degree in co-relation 57037. Up to 5231 conditions per place. [2024-06-28 02:32:20,260 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 496 selfloop transitions, 174 changer transitions 0/678 dead transitions. [2024-06-28 02:32:20,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 678 transitions, 11637 flow [2024-06-28 02:32:20,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:32:20,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:32:20,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 02:32:20,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5914634146341463 [2024-06-28 02:32:20,261 INFO L175 Difference]: Start difference. First operand has 494 places, 655 transitions, 10192 flow. Second operand 8 states and 194 transitions. [2024-06-28 02:32:20,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 678 transitions, 11637 flow [2024-06-28 02:32:29,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 678 transitions, 11456 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 02:32:29,400 INFO L231 Difference]: Finished difference. Result has 496 places, 656 transitions, 10392 flow [2024-06-28 02:32:29,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10019, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10392, PETRI_PLACES=496, PETRI_TRANSITIONS=656} [2024-06-28 02:32:29,401 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 454 predicate places. [2024-06-28 02:32:29,401 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 656 transitions, 10392 flow [2024-06-28 02:32:29,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:32:29,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:29,401 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] [2024-06-28 02:32:29,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-28 02:32:29,402 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:32:29,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:29,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1295408123, now seen corresponding path program 6 times [2024-06-28 02:32:29,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:29,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887702482] [2024-06-28 02:32:29,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:29,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:29,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:29,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:29,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:29,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887702482] [2024-06-28 02:32:29,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887702482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:29,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:29,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:32:29,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613909074] [2024-06-28 02:32:29,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:29,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:32:29,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:29,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:32:29,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:32:29,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:32:29,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 656 transitions, 10392 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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) [2024-06-28 02:32:29,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:29,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:32:29,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:31,198 INFO L124 PetriNetUnfolderBase]: 3637/6190 cut-off events. [2024-06-28 02:32:31,199 INFO L125 PetriNetUnfolderBase]: For 1435464/1435464 co-relation queries the response was YES. [2024-06-28 02:32:31,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57646 conditions, 6190 events. 3637/6190 cut-off events. For 1435464/1435464 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 43038 event pairs, 562 based on Foata normal form. 2/6187 useless extension candidates. Maximal degree in co-relation 57425. Up to 5220 conditions per place. [2024-06-28 02:32:31,302 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 586 selfloop transitions, 92 changer transitions 0/686 dead transitions. [2024-06-28 02:32:31,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 686 transitions, 12514 flow [2024-06-28 02:32:31,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:32:31,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:32:31,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 02:32:31,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6027874564459931 [2024-06-28 02:32:31,303 INFO L175 Difference]: Start difference. First operand has 496 places, 656 transitions, 10392 flow. Second operand 7 states and 173 transitions. [2024-06-28 02:32:31,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 686 transitions, 12514 flow [2024-06-28 02:32:41,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 686 transitions, 12158 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 02:32:41,024 INFO L231 Difference]: Finished difference. Result has 498 places, 661 transitions, 10372 flow [2024-06-28 02:32:41,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10036, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=566, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10372, PETRI_PLACES=498, PETRI_TRANSITIONS=661} [2024-06-28 02:32:41,025 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 456 predicate places. [2024-06-28 02:32:41,025 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 661 transitions, 10372 flow [2024-06-28 02:32:41,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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) [2024-06-28 02:32:41,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:41,025 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] [2024-06-28 02:32:41,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-28 02:32:41,026 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:32:41,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:41,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1283027963, now seen corresponding path program 7 times [2024-06-28 02:32:41,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:41,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284324461] [2024-06-28 02:32:41,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:41,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:41,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:41,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:41,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:41,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284324461] [2024-06-28 02:32:41,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284324461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:41,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:41,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:32:41,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931658471] [2024-06-28 02:32:41,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:41,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:32:41,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:41,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:32:41,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:32:41,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:32:41,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 661 transitions, 10372 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:32:41,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:41,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:32:41,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:42,895 INFO L124 PetriNetUnfolderBase]: 3645/6218 cut-off events. [2024-06-28 02:32:42,895 INFO L125 PetriNetUnfolderBase]: For 1453301/1453301 co-relation queries the response was YES. [2024-06-28 02:32:42,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57897 conditions, 6218 events. 3645/6218 cut-off events. For 1453301/1453301 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 43514 event pairs, 586 based on Foata normal form. 2/6215 useless extension candidates. Maximal degree in co-relation 57674. Up to 5337 conditions per place. [2024-06-28 02:32:42,997 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 586 selfloop transitions, 93 changer transitions 0/687 dead transitions. [2024-06-28 02:32:42,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 687 transitions, 11844 flow [2024-06-28 02:32:42,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:32:42,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:32:42,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-28 02:32:42,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5853658536585366 [2024-06-28 02:32:42,998 INFO L175 Difference]: Start difference. First operand has 498 places, 661 transitions, 10372 flow. Second operand 8 states and 192 transitions. [2024-06-28 02:32:42,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 687 transitions, 11844 flow [2024-06-28 02:32:52,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 687 transitions, 11565 flow, removed 62 selfloop flow, removed 4 redundant places. [2024-06-28 02:32:52,175 INFO L231 Difference]: Finished difference. Result has 502 places, 663 transitions, 10344 flow [2024-06-28 02:32:52,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10119, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10344, PETRI_PLACES=502, PETRI_TRANSITIONS=663} [2024-06-28 02:32:52,175 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 460 predicate places. [2024-06-28 02:32:52,175 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 663 transitions, 10344 flow [2024-06-28 02:32:52,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:32:52,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:32:52,176 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] [2024-06-28 02:32:52,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-28 02:32:52,176 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:32:52,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:32:52,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1462510597, now seen corresponding path program 8 times [2024-06-28 02:32:52,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:32:52,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58332504] [2024-06-28 02:32:52,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:32:52,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:32:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:32:52,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:32:52,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:32:52,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58332504] [2024-06-28 02:32:52,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58332504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:32:52,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:32:52,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:32:52,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109350995] [2024-06-28 02:32:52,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:32:52,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:32:52,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:32:52,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:32:52,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:32:52,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:32:52,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 663 transitions, 10344 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:32:52,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:32:52,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:32:52,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:32:54,014 INFO L124 PetriNetUnfolderBase]: 3640/6195 cut-off events. [2024-06-28 02:32:54,014 INFO L125 PetriNetUnfolderBase]: For 1449263/1449263 co-relation queries the response was YES. [2024-06-28 02:32:54,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57430 conditions, 6195 events. 3640/6195 cut-off events. For 1449263/1449263 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 43213 event pairs, 680 based on Foata normal form. 2/6188 useless extension candidates. Maximal degree in co-relation 57206. Up to 5415 conditions per place. [2024-06-28 02:32:54,120 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 599 selfloop transitions, 78 changer transitions 0/685 dead transitions. [2024-06-28 02:32:54,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 685 transitions, 12042 flow [2024-06-28 02:32:54,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:32:54,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:32:54,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2024-06-28 02:32:54,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5636856368563685 [2024-06-28 02:32:54,121 INFO L175 Difference]: Start difference. First operand has 502 places, 663 transitions, 10344 flow. Second operand 9 states and 208 transitions. [2024-06-28 02:32:54,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 685 transitions, 12042 flow [2024-06-28 02:33:03,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 685 transitions, 11839 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 02:33:03,423 INFO L231 Difference]: Finished difference. Result has 505 places, 663 transitions, 10302 flow [2024-06-28 02:33:03,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10141, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=663, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=585, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10302, PETRI_PLACES=505, PETRI_TRANSITIONS=663} [2024-06-28 02:33:03,424 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 463 predicate places. [2024-06-28 02:33:03,424 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 663 transitions, 10302 flow [2024-06-28 02:33:03,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:33:03,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:33:03,424 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] [2024-06-28 02:33:03,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-28 02:33:03,425 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:33:03,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:33:03,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1452987397, now seen corresponding path program 9 times [2024-06-28 02:33:03,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:33:03,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339771708] [2024-06-28 02:33:03,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:33:03,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:33:03,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:33:03,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:33:03,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:33:03,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339771708] [2024-06-28 02:33:03,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339771708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:33:03,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:33:03,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:33:03,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435378025] [2024-06-28 02:33:03,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:33:03,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:33:03,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:33:03,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:33:03,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:33:03,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:33:03,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 663 transitions, 10302 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:33:03,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:33:03,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:33:03,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:33:05,368 INFO L124 PetriNetUnfolderBase]: 3635/6192 cut-off events. [2024-06-28 02:33:05,368 INFO L125 PetriNetUnfolderBase]: For 1446175/1446175 co-relation queries the response was YES. [2024-06-28 02:33:05,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57107 conditions, 6192 events. 3635/6192 cut-off events. For 1446175/1446175 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 43252 event pairs, 685 based on Foata normal form. 2/6189 useless extension candidates. Maximal degree in co-relation 56882. Up to 5431 conditions per place. [2024-06-28 02:33:05,473 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 601 selfloop transitions, 73 changer transitions 0/682 dead transitions. [2024-06-28 02:33:05,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 682 transitions, 11696 flow [2024-06-28 02:33:05,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:33:05,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:33:05,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-28 02:33:05,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5701219512195121 [2024-06-28 02:33:05,474 INFO L175 Difference]: Start difference. First operand has 505 places, 663 transitions, 10302 flow. Second operand 8 states and 187 transitions. [2024-06-28 02:33:05,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 682 transitions, 11696 flow [2024-06-28 02:33:14,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 682 transitions, 11502 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 02:33:14,783 INFO L231 Difference]: Finished difference. Result has 507 places, 663 transitions, 10259 flow [2024-06-28 02:33:14,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10108, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=663, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=590, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10259, PETRI_PLACES=507, PETRI_TRANSITIONS=663} [2024-06-28 02:33:14,783 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 465 predicate places. [2024-06-28 02:33:14,783 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 663 transitions, 10259 flow [2024-06-28 02:33:14,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:33:14,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:33:14,784 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] [2024-06-28 02:33:14,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-28 02:33:14,784 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:33:14,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:33:14,784 INFO L85 PathProgramCache]: Analyzing trace with hash 578652071, now seen corresponding path program 10 times [2024-06-28 02:33:14,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:33:14,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821490625] [2024-06-28 02:33:14,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:33:14,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:33:14,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:33:14,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:33:14,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:33:14,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821490625] [2024-06-28 02:33:14,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821490625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:33:14,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:33:14,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:33:14,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607714058] [2024-06-28 02:33:14,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:33:14,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:33:14,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:33:14,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:33:14,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:33:14,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:33:14,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 663 transitions, 10259 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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) [2024-06-28 02:33:14,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:33:14,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:33:14,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:33:16,686 INFO L124 PetriNetUnfolderBase]: 3679/6271 cut-off events. [2024-06-28 02:33:16,687 INFO L125 PetriNetUnfolderBase]: For 1575218/1575218 co-relation queries the response was YES. [2024-06-28 02:33:16,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57807 conditions, 6271 events. 3679/6271 cut-off events. For 1575218/1575218 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 43889 event pairs, 683 based on Foata normal form. 12/6281 useless extension candidates. Maximal degree in co-relation 57581. Up to 5555 conditions per place. [2024-06-28 02:33:16,792 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 634 selfloop transitions, 44 changer transitions 0/686 dead transitions. [2024-06-28 02:33:16,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 686 transitions, 11785 flow [2024-06-28 02:33:16,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:33:16,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:33:16,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-28 02:33:16,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5762195121951219 [2024-06-28 02:33:16,793 INFO L175 Difference]: Start difference. First operand has 507 places, 663 transitions, 10259 flow. Second operand 8 states and 189 transitions. [2024-06-28 02:33:16,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 686 transitions, 11785 flow [2024-06-28 02:33:25,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 686 transitions, 11635 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 02:33:25,476 INFO L231 Difference]: Finished difference. Result has 508 places, 667 transitions, 10312 flow [2024-06-28 02:33:25,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10109, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=663, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=619, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10312, PETRI_PLACES=508, PETRI_TRANSITIONS=667} [2024-06-28 02:33:25,477 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 466 predicate places. [2024-06-28 02:33:25,477 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 667 transitions, 10312 flow [2024-06-28 02:33:25,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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) [2024-06-28 02:33:25,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:33:25,477 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] [2024-06-28 02:33:25,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-28 02:33:25,478 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:33:25,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:33:25,478 INFO L85 PathProgramCache]: Analyzing trace with hash 867335051, now seen corresponding path program 11 times [2024-06-28 02:33:25,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:33:25,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826964128] [2024-06-28 02:33:25,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:33:25,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:33:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:33:25,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:33:25,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:33:25,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826964128] [2024-06-28 02:33:25,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826964128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:33:25,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:33:25,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:33:25,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910406415] [2024-06-28 02:33:25,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:33:25,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:33:25,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:33:25,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:33:25,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:33:25,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:33:25,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 667 transitions, 10312 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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) [2024-06-28 02:33:25,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:33:25,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:33:25,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:33:27,271 INFO L124 PetriNetUnfolderBase]: 3657/6235 cut-off events. [2024-06-28 02:33:27,271 INFO L125 PetriNetUnfolderBase]: For 1483449/1483449 co-relation queries the response was YES. [2024-06-28 02:33:27,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56114 conditions, 6235 events. 3657/6235 cut-off events. For 1483449/1483449 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 43650 event pairs, 651 based on Foata normal form. 12/6241 useless extension candidates. Maximal degree in co-relation 55887. Up to 5315 conditions per place. [2024-06-28 02:33:27,378 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 633 selfloop transitions, 51 changer transitions 0/692 dead transitions. [2024-06-28 02:33:27,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 692 transitions, 11820 flow [2024-06-28 02:33:27,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:33:27,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:33:27,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-28 02:33:27,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5884146341463414 [2024-06-28 02:33:27,379 INFO L175 Difference]: Start difference. First operand has 508 places, 667 transitions, 10312 flow. Second operand 8 states and 193 transitions. [2024-06-28 02:33:27,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 692 transitions, 11820 flow [2024-06-28 02:33:34,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 692 transitions, 11689 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 02:33:34,553 INFO L231 Difference]: Finished difference. Result has 510 places, 669 transitions, 10329 flow [2024-06-28 02:33:34,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10181, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=616, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10329, PETRI_PLACES=510, PETRI_TRANSITIONS=669} [2024-06-28 02:33:34,553 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 468 predicate places. [2024-06-28 02:33:34,554 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 669 transitions, 10329 flow [2024-06-28 02:33:34,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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) [2024-06-28 02:33:34,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:33:34,554 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] [2024-06-28 02:33:34,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-28 02:33:34,554 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:33:34,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:33:34,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1066897403, now seen corresponding path program 6 times [2024-06-28 02:33:34,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:33:34,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893786927] [2024-06-28 02:33:34,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:33:34,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:33:34,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:33:34,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:33:34,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:33:34,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893786927] [2024-06-28 02:33:34,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893786927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:33:34,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:33:34,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:33:34,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118033290] [2024-06-28 02:33:34,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:33:34,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:33:34,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:33:34,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:33:34,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:33:34,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:33:34,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 669 transitions, 10329 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:33:34,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:33:34,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:33:34,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:33:36,445 INFO L124 PetriNetUnfolderBase]: 3693/6301 cut-off events. [2024-06-28 02:33:36,445 INFO L125 PetriNetUnfolderBase]: For 1482301/1482301 co-relation queries the response was YES. [2024-06-28 02:33:36,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56685 conditions, 6301 events. 3693/6301 cut-off events. For 1482301/1482301 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 44242 event pairs, 681 based on Foata normal form. 10/6309 useless extension candidates. Maximal degree in co-relation 56457. Up to 5565 conditions per place. [2024-06-28 02:33:36,554 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 628 selfloop transitions, 55 changer transitions 0/691 dead transitions. [2024-06-28 02:33:36,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 691 transitions, 11839 flow [2024-06-28 02:33:36,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:33:36,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:33:36,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2024-06-28 02:33:36,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5636856368563685 [2024-06-28 02:33:36,555 INFO L175 Difference]: Start difference. First operand has 510 places, 669 transitions, 10329 flow. Second operand 9 states and 208 transitions. [2024-06-28 02:33:36,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 691 transitions, 11839 flow [2024-06-28 02:33:45,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 691 transitions, 11723 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 02:33:45,507 INFO L231 Difference]: Finished difference. Result has 513 places, 671 transitions, 10403 flow [2024-06-28 02:33:45,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10213, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=669, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=614, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10403, PETRI_PLACES=513, PETRI_TRANSITIONS=671} [2024-06-28 02:33:45,508 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 471 predicate places. [2024-06-28 02:33:45,508 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 671 transitions, 10403 flow [2024-06-28 02:33:45,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:33:45,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:33:45,508 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] [2024-06-28 02:33:45,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-28 02:33:45,509 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:33:45,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:33:45,509 INFO L85 PathProgramCache]: Analyzing trace with hash 657853893, now seen corresponding path program 12 times [2024-06-28 02:33:45,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:33:45,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021331991] [2024-06-28 02:33:45,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:33:45,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:33:45,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:33:45,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:33:45,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:33:45,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021331991] [2024-06-28 02:33:45,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021331991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:33:45,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:33:45,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:33:45,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475414487] [2024-06-28 02:33:45,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:33:45,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:33:45,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:33:45,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:33:45,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:33:45,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:33:45,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 671 transitions, 10403 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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) [2024-06-28 02:33:45,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:33:45,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:33:45,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:33:47,388 INFO L124 PetriNetUnfolderBase]: 3760/6405 cut-off events. [2024-06-28 02:33:47,388 INFO L125 PetriNetUnfolderBase]: For 1619822/1619822 co-relation queries the response was YES. [2024-06-28 02:33:47,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57485 conditions, 6405 events. 3760/6405 cut-off events. For 1619822/1619822 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 45002 event pairs, 681 based on Foata normal form. 22/6425 useless extension candidates. Maximal degree in co-relation 57256. Up to 5465 conditions per place. [2024-06-28 02:33:47,501 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 603 selfloop transitions, 98 changer transitions 0/709 dead transitions. [2024-06-28 02:33:47,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 709 transitions, 12040 flow [2024-06-28 02:33:47,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:33:47,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:33:47,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-28 02:33:47,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6371951219512195 [2024-06-28 02:33:47,517 INFO L175 Difference]: Start difference. First operand has 513 places, 671 transitions, 10403 flow. Second operand 8 states and 209 transitions. [2024-06-28 02:33:47,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 709 transitions, 12040 flow [2024-06-28 02:33:56,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 709 transitions, 11876 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-28 02:33:56,404 INFO L231 Difference]: Finished difference. Result has 514 places, 675 transitions, 10589 flow [2024-06-28 02:33:56,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10239, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=671, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10589, PETRI_PLACES=514, PETRI_TRANSITIONS=675} [2024-06-28 02:33:56,404 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 472 predicate places. [2024-06-28 02:33:56,405 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 675 transitions, 10589 flow [2024-06-28 02:33:56,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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) [2024-06-28 02:33:56,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:33:56,405 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] [2024-06-28 02:33:56,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-28 02:33:56,405 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:33:56,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:33:56,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1015775733, now seen corresponding path program 13 times [2024-06-28 02:33:56,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:33:56,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802973949] [2024-06-28 02:33:56,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:33:56,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:33:56,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:33:56,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:33:56,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:33:56,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802973949] [2024-06-28 02:33:56,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802973949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:33:56,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:33:56,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:33:56,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32332378] [2024-06-28 02:33:56,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:33:56,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:33:56,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:33:56,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:33:56,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:33:56,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:33:56,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 675 transitions, 10589 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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) [2024-06-28 02:33:56,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:33:56,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:33:56,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:33:58,330 INFO L124 PetriNetUnfolderBase]: 3715/6357 cut-off events. [2024-06-28 02:33:58,331 INFO L125 PetriNetUnfolderBase]: For 1407414/1407414 co-relation queries the response was YES. [2024-06-28 02:33:58,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54141 conditions, 6357 events. 3715/6357 cut-off events. For 1407414/1407414 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 44872 event pairs, 516 based on Foata normal form. 22/6377 useless extension candidates. Maximal degree in co-relation 53911. Up to 4719 conditions per place. [2024-06-28 02:33:58,438 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 589 selfloop transitions, 119 changer transitions 0/716 dead transitions. [2024-06-28 02:33:58,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 716 transitions, 12523 flow [2024-06-28 02:33:58,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:33:58,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:33:58,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-28 02:33:58,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.649390243902439 [2024-06-28 02:33:58,440 INFO L175 Difference]: Start difference. First operand has 514 places, 675 transitions, 10589 flow. Second operand 8 states and 213 transitions. [2024-06-28 02:33:58,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 716 transitions, 12523 flow [2024-06-28 02:34:06,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 716 transitions, 12274 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-28 02:34:06,404 INFO L231 Difference]: Finished difference. Result has 516 places, 677 transitions, 10671 flow [2024-06-28 02:34:06,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10342, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=675, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10671, PETRI_PLACES=516, PETRI_TRANSITIONS=677} [2024-06-28 02:34:06,404 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 474 predicate places. [2024-06-28 02:34:06,404 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 677 transitions, 10671 flow [2024-06-28 02:34:06,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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) [2024-06-28 02:34:06,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:34:06,405 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] [2024-06-28 02:34:06,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-28 02:34:06,405 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:34:06,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:34:06,405 INFO L85 PathProgramCache]: Analyzing trace with hash -387746783, now seen corresponding path program 7 times [2024-06-28 02:34:06,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:34:06,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498361816] [2024-06-28 02:34:06,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:34:06,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:34:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:34:06,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:34:06,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:34:06,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498361816] [2024-06-28 02:34:06,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498361816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:34:06,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:34:06,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:34:06,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661448968] [2024-06-28 02:34:06,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:34:06,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:34:06,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:34:06,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:34:06,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:34:06,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:34:06,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 677 transitions, 10671 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:34:06,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:34:06,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:34:06,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:34:08,351 INFO L124 PetriNetUnfolderBase]: 3723/6362 cut-off events. [2024-06-28 02:34:08,351 INFO L125 PetriNetUnfolderBase]: For 1185026/1185029 co-relation queries the response was YES. [2024-06-28 02:34:08,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54382 conditions, 6362 events. 3723/6362 cut-off events. For 1185026/1185029 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 44848 event pairs, 682 based on Foata normal form. 4/6363 useless extension candidates. Maximal degree in co-relation 54151. Up to 5497 conditions per place. [2024-06-28 02:34:08,457 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 567 selfloop transitions, 126 changer transitions 0/701 dead transitions. [2024-06-28 02:34:08,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 701 transitions, 12185 flow [2024-06-28 02:34:08,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:34:08,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:34:08,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 02:34:08,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5914634146341463 [2024-06-28 02:34:08,458 INFO L175 Difference]: Start difference. First operand has 516 places, 677 transitions, 10671 flow. Second operand 8 states and 194 transitions. [2024-06-28 02:34:08,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 701 transitions, 12185 flow [2024-06-28 02:34:15,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 701 transitions, 11982 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 02:34:15,217 INFO L231 Difference]: Finished difference. Result has 519 places, 679 transitions, 10803 flow [2024-06-28 02:34:15,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10468, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=677, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10803, PETRI_PLACES=519, PETRI_TRANSITIONS=679} [2024-06-28 02:34:15,217 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 477 predicate places. [2024-06-28 02:34:15,217 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 679 transitions, 10803 flow [2024-06-28 02:34:15,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:34:15,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:34:15,218 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] [2024-06-28 02:34:15,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-28 02:34:15,218 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:34:15,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:34:15,218 INFO L85 PathProgramCache]: Analyzing trace with hash 401538081, now seen corresponding path program 8 times [2024-06-28 02:34:15,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:34:15,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863058995] [2024-06-28 02:34:15,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:34:15,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:34:15,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:34:15,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:34:15,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:34:15,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863058995] [2024-06-28 02:34:15,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863058995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:34:15,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:34:15,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:34:15,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49785232] [2024-06-28 02:34:15,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:34:15,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:34:15,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:34:15,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:34:15,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:34:15,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:34:15,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 679 transitions, 10803 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:34:15,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:34:15,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:34:15,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:34:17,118 INFO L124 PetriNetUnfolderBase]: 3759/6417 cut-off events. [2024-06-28 02:34:17,119 INFO L125 PetriNetUnfolderBase]: For 1277747/1277747 co-relation queries the response was YES. [2024-06-28 02:34:17,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54648 conditions, 6417 events. 3759/6417 cut-off events. For 1277747/1277747 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 45311 event pairs, 679 based on Foata normal form. 10/6425 useless extension candidates. Maximal degree in co-relation 54416. Up to 5483 conditions per place. [2024-06-28 02:34:17,230 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 578 selfloop transitions, 127 changer transitions 0/713 dead transitions. [2024-06-28 02:34:17,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 713 transitions, 12397 flow [2024-06-28 02:34:17,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:34:17,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:34:17,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-28 02:34:17,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6070460704607046 [2024-06-28 02:34:17,231 INFO L175 Difference]: Start difference. First operand has 519 places, 679 transitions, 10803 flow. Second operand 9 states and 224 transitions. [2024-06-28 02:34:17,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 713 transitions, 12397 flow [2024-06-28 02:34:24,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 713 transitions, 12078 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-28 02:34:24,847 INFO L231 Difference]: Finished difference. Result has 522 places, 681 transitions, 10830 flow [2024-06-28 02:34:24,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10484, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=679, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=552, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10830, PETRI_PLACES=522, PETRI_TRANSITIONS=681} [2024-06-28 02:34:24,847 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 480 predicate places. [2024-06-28 02:34:24,847 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 681 transitions, 10830 flow [2024-06-28 02:34:24,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:34:24,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:34:24,848 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] [2024-06-28 02:34:24,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-28 02:34:24,848 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:34:24,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:34:24,848 INFO L85 PathProgramCache]: Analyzing trace with hash -31032287, now seen corresponding path program 9 times [2024-06-28 02:34:24,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:34:24,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66656559] [2024-06-28 02:34:24,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:34:24,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:34:24,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:34:24,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:34:24,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:34:24,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66656559] [2024-06-28 02:34:24,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66656559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:34:24,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:34:24,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:34:24,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568311044] [2024-06-28 02:34:24,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:34:24,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:34:24,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:34:24,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:34:24,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:34:25,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:34:25,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 681 transitions, 10830 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:34:25,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:34:25,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:34:25,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:34:26,793 INFO L124 PetriNetUnfolderBase]: 3747/6396 cut-off events. [2024-06-28 02:34:26,793 INFO L125 PetriNetUnfolderBase]: For 1176495/1176498 co-relation queries the response was YES. [2024-06-28 02:34:26,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54293 conditions, 6396 events. 3747/6396 cut-off events. For 1176495/1176498 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 45129 event pairs, 684 based on Foata normal form. 4/6397 useless extension candidates. Maximal degree in co-relation 54060. Up to 5584 conditions per place. [2024-06-28 02:34:26,916 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 609 selfloop transitions, 88 changer transitions 0/705 dead transitions. [2024-06-28 02:34:26,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 705 transitions, 12284 flow [2024-06-28 02:34:26,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:34:26,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:34:26,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-28 02:34:26,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6202090592334495 [2024-06-28 02:34:26,924 INFO L175 Difference]: Start difference. First operand has 522 places, 681 transitions, 10830 flow. Second operand 7 states and 178 transitions. [2024-06-28 02:34:26,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 705 transitions, 12284 flow [2024-06-28 02:34:34,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 705 transitions, 11966 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-28 02:34:34,618 INFO L231 Difference]: Finished difference. Result has 522 places, 681 transitions, 10693 flow [2024-06-28 02:34:34,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10512, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=593, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10693, PETRI_PLACES=522, PETRI_TRANSITIONS=681} [2024-06-28 02:34:34,619 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 480 predicate places. [2024-06-28 02:34:34,619 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 681 transitions, 10693 flow [2024-06-28 02:34:34,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:34:34,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:34:34,619 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] [2024-06-28 02:34:34,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-28 02:34:34,619 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:34:34,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:34:34,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1248108581, now seen corresponding path program 10 times [2024-06-28 02:34:34,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:34:34,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672402013] [2024-06-28 02:34:34,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:34:34,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:34:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:34:34,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:34:34,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:34:34,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672402013] [2024-06-28 02:34:34,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672402013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:34:34,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:34:34,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:34:34,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12691888] [2024-06-28 02:34:34,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:34:34,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:34:34,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:34:34,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:34:34,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:34:34,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:34:34,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 681 transitions, 10693 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:34:34,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:34:34,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:34:34,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:34:36,438 INFO L124 PetriNetUnfolderBase]: 3755/6399 cut-off events. [2024-06-28 02:34:36,438 INFO L125 PetriNetUnfolderBase]: For 1172880/1172883 co-relation queries the response was YES. [2024-06-28 02:34:36,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53877 conditions, 6399 events. 3755/6399 cut-off events. For 1172880/1172883 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 45117 event pairs, 667 based on Foata normal form. 4/6400 useless extension candidates. Maximal degree in co-relation 53643. Up to 5438 conditions per place. [2024-06-28 02:34:36,546 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 603 selfloop transitions, 101 changer transitions 0/712 dead transitions. [2024-06-28 02:34:36,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 712 transitions, 12267 flow [2024-06-28 02:34:36,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:34:36,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:34:36,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-28 02:34:36,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6341463414634146 [2024-06-28 02:34:36,547 INFO L175 Difference]: Start difference. First operand has 522 places, 681 transitions, 10693 flow. Second operand 7 states and 182 transitions. [2024-06-28 02:34:36,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 712 transitions, 12267 flow [2024-06-28 02:34:44,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 712 transitions, 11935 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 02:34:44,721 INFO L231 Difference]: Finished difference. Result has 523 places, 684 transitions, 10671 flow [2024-06-28 02:34:44,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10361, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10671, PETRI_PLACES=523, PETRI_TRANSITIONS=684} [2024-06-28 02:34:44,722 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 481 predicate places. [2024-06-28 02:34:44,722 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 684 transitions, 10671 flow [2024-06-28 02:34:44,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:34:44,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:34:44,723 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] [2024-06-28 02:34:44,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-28 02:34:44,723 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:34:44,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:34:44,723 INFO L85 PathProgramCache]: Analyzing trace with hash -623922143, now seen corresponding path program 11 times [2024-06-28 02:34:44,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:34:44,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445077587] [2024-06-28 02:34:44,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:34:44,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:34:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:34:44,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:34:44,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:34:44,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445077587] [2024-06-28 02:34:44,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445077587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:34:44,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:34:44,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:34:44,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56122517] [2024-06-28 02:34:44,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:34:44,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:34:44,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:34:44,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:34:44,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:34:44,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:34:44,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 684 transitions, 10671 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:34:44,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:34:44,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:34:44,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:34:46,585 INFO L124 PetriNetUnfolderBase]: 3763/6424 cut-off events. [2024-06-28 02:34:46,585 INFO L125 PetriNetUnfolderBase]: For 1184948/1184951 co-relation queries the response was YES. [2024-06-28 02:34:46,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54149 conditions, 6424 events. 3763/6424 cut-off events. For 1184948/1184951 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 45414 event pairs, 686 based on Foata normal form. 4/6425 useless extension candidates. Maximal degree in co-relation 53913. Up to 5557 conditions per place. [2024-06-28 02:34:46,700 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 577 selfloop transitions, 126 changer transitions 0/711 dead transitions. [2024-06-28 02:34:46,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 711 transitions, 12217 flow [2024-06-28 02:34:46,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:34:46,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:34:46,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 02:34:46,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.600609756097561 [2024-06-28 02:34:46,701 INFO L175 Difference]: Start difference. First operand has 523 places, 684 transitions, 10671 flow. Second operand 8 states and 197 transitions. [2024-06-28 02:34:46,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 711 transitions, 12217 flow [2024-06-28 02:34:55,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 711 transitions, 12001 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-28 02:34:55,899 INFO L231 Difference]: Finished difference. Result has 527 places, 686 transitions, 10794 flow [2024-06-28 02:34:55,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10455, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=558, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10794, PETRI_PLACES=527, PETRI_TRANSITIONS=686} [2024-06-28 02:34:55,899 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 485 predicate places. [2024-06-28 02:34:55,900 INFO L495 AbstractCegarLoop]: Abstraction has has 527 places, 686 transitions, 10794 flow [2024-06-28 02:34:55,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:34:55,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:34:55,900 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] [2024-06-28 02:34:55,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-28 02:34:55,900 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:34:55,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:34:55,901 INFO L85 PathProgramCache]: Analyzing trace with hash -387450113, now seen corresponding path program 12 times [2024-06-28 02:34:55,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:34:55,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780521464] [2024-06-28 02:34:55,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:34:55,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:34:55,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:34:56,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:34:56,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:34:56,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780521464] [2024-06-28 02:34:56,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780521464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:34:56,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:34:56,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:34:56,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692178483] [2024-06-28 02:34:56,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:34:56,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:34:56,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:34:56,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:34:56,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:34:56,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:34:56,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 686 transitions, 10794 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:34:56,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:34:56,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:34:56,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:34:57,899 INFO L124 PetriNetUnfolderBase]: 3758/6415 cut-off events. [2024-06-28 02:34:57,899 INFO L125 PetriNetUnfolderBase]: For 1176067/1176070 co-relation queries the response was YES. [2024-06-28 02:34:57,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53838 conditions, 6415 events. 3758/6415 cut-off events. For 1176067/1176070 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 45327 event pairs, 681 based on Foata normal form. 4/6416 useless extension candidates. Maximal degree in co-relation 53601. Up to 5454 conditions per place. [2024-06-28 02:34:58,007 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 573 selfloop transitions, 135 changer transitions 0/716 dead transitions. [2024-06-28 02:34:58,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 716 transitions, 12434 flow [2024-06-28 02:34:58,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:34:58,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:34:58,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-28 02:34:58,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6036585365853658 [2024-06-28 02:34:58,008 INFO L175 Difference]: Start difference. First operand has 527 places, 686 transitions, 10794 flow. Second operand 8 states and 198 transitions. [2024-06-28 02:34:58,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 716 transitions, 12434 flow [2024-06-28 02:35:06,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 716 transitions, 12111 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-28 02:35:06,706 INFO L231 Difference]: Finished difference. Result has 530 places, 690 transitions, 10903 flow [2024-06-28 02:35:06,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10471, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=686, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=552, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10903, PETRI_PLACES=530, PETRI_TRANSITIONS=690} [2024-06-28 02:35:06,707 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 488 predicate places. [2024-06-28 02:35:06,707 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 690 transitions, 10903 flow [2024-06-28 02:35:06,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:35:06,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:35:06,708 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] [2024-06-28 02:35:06,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-28 02:35:06,708 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:35:06,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:35:06,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1108562069, now seen corresponding path program 13 times [2024-06-28 02:35:06,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:35:06,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823868657] [2024-06-28 02:35:06,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:35:06,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:35:06,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:35:06,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:35:06,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:35:06,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823868657] [2024-06-28 02:35:06,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823868657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:35:06,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:35:06,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:35:06,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225242903] [2024-06-28 02:35:06,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:35:06,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:35:06,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:35:06,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:35:06,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:35:06,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:35:06,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 690 transitions, 10903 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:35:06,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:35:06,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:35:06,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:35:08,802 INFO L124 PetriNetUnfolderBase]: 3753/6407 cut-off events. [2024-06-28 02:35:08,802 INFO L125 PetriNetUnfolderBase]: For 1191344/1191347 co-relation queries the response was YES. [2024-06-28 02:35:08,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53068 conditions, 6407 events. 3753/6407 cut-off events. For 1191344/1191347 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 45264 event pairs, 536 based on Foata normal form. 10/6414 useless extension candidates. Maximal degree in co-relation 52829. Up to 4637 conditions per place. [2024-06-28 02:35:08,911 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 604 selfloop transitions, 111 changer transitions 0/723 dead transitions. [2024-06-28 02:35:08,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 723 transitions, 12822 flow [2024-06-28 02:35:08,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:35:08,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:35:08,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-28 02:35:08,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6411149825783972 [2024-06-28 02:35:08,913 INFO L175 Difference]: Start difference. First operand has 530 places, 690 transitions, 10903 flow. Second operand 7 states and 184 transitions. [2024-06-28 02:35:08,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 723 transitions, 12822 flow [2024-06-28 02:35:16,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 723 transitions, 12553 flow, removed 53 selfloop flow, removed 4 redundant places. [2024-06-28 02:35:16,820 INFO L231 Difference]: Finished difference. Result has 533 places, 692 transitions, 10913 flow [2024-06-28 02:35:16,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10634, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=690, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10913, PETRI_PLACES=533, PETRI_TRANSITIONS=692} [2024-06-28 02:35:16,820 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 491 predicate places. [2024-06-28 02:35:16,821 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 692 transitions, 10913 flow [2024-06-28 02:35:16,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:35:16,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:35:16,821 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] [2024-06-28 02:35:16,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-28 02:35:16,821 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:35:16,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:35:16,822 INFO L85 PathProgramCache]: Analyzing trace with hash 454559773, now seen corresponding path program 14 times [2024-06-28 02:35:16,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:35:16,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374619823] [2024-06-28 02:35:16,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:35:16,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:35:16,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:35:16,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:35:16,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:35:16,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374619823] [2024-06-28 02:35:16,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374619823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:35:16,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:35:16,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:35:16,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202887197] [2024-06-28 02:35:16,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:35:16,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:35:16,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:35:16,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:35:16,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:35:16,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:35:16,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 692 transitions, 10913 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:35:16,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:35:16,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:35:16,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:35:18,699 INFO L124 PetriNetUnfolderBase]: 3741/6398 cut-off events. [2024-06-28 02:35:18,700 INFO L125 PetriNetUnfolderBase]: For 1107929/1107932 co-relation queries the response was YES. [2024-06-28 02:35:18,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53035 conditions, 6398 events. 3741/6398 cut-off events. For 1107929/1107932 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 45302 event pairs, 487 based on Foata normal form. 4/6399 useless extension candidates. Maximal degree in co-relation 52794. Up to 4629 conditions per place. [2024-06-28 02:35:18,811 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 591 selfloop transitions, 125 changer transitions 0/724 dead transitions. [2024-06-28 02:35:18,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 724 transitions, 12477 flow [2024-06-28 02:35:18,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:35:18,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:35:18,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-06-28 02:35:18,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6515679442508711 [2024-06-28 02:35:18,813 INFO L175 Difference]: Start difference. First operand has 533 places, 692 transitions, 10913 flow. Second operand 7 states and 187 transitions. [2024-06-28 02:35:18,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 724 transitions, 12477 flow [2024-06-28 02:35:26,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 724 transitions, 12222 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-28 02:35:26,633 INFO L231 Difference]: Finished difference. Result has 536 places, 692 transitions, 10913 flow [2024-06-28 02:35:26,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10658, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10913, PETRI_PLACES=536, PETRI_TRANSITIONS=692} [2024-06-28 02:35:26,634 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 494 predicate places. [2024-06-28 02:35:26,634 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 692 transitions, 10913 flow [2024-06-28 02:35:26,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:35:26,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:35:26,634 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] [2024-06-28 02:35:26,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-28 02:35:26,635 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:35:26,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:35:26,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1750105389, now seen corresponding path program 1 times [2024-06-28 02:35:26,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:35:26,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065704490] [2024-06-28 02:35:26,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:35:26,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:35:26,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:35:26,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:35:26,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:35:26,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065704490] [2024-06-28 02:35:26,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065704490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:35:26,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:35:26,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:35:26,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280085939] [2024-06-28 02:35:26,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:35:26,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:35:26,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:35:26,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:35:26,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:35:26,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:35:26,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 692 transitions, 10913 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:35:26,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:35:26,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:35:26,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:35:28,605 INFO L124 PetriNetUnfolderBase]: 3775/6437 cut-off events. [2024-06-28 02:35:28,605 INFO L125 PetriNetUnfolderBase]: For 1172906/1172906 co-relation queries the response was YES. [2024-06-28 02:35:28,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54333 conditions, 6437 events. 3775/6437 cut-off events. For 1172906/1172906 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 45488 event pairs, 563 based on Foata normal form. 2/6437 useless extension candidates. Maximal degree in co-relation 54091. Up to 5585 conditions per place. [2024-06-28 02:35:28,738 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 672 selfloop transitions, 57 changer transitions 0/737 dead transitions. [2024-06-28 02:35:28,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 737 transitions, 13291 flow [2024-06-28 02:35:28,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:35:28,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:35:28,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-28 02:35:28,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6016260162601627 [2024-06-28 02:35:28,740 INFO L175 Difference]: Start difference. First operand has 536 places, 692 transitions, 10913 flow. Second operand 9 states and 222 transitions. [2024-06-28 02:35:28,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 737 transitions, 13291 flow [2024-06-28 02:35:37,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 737 transitions, 12995 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 02:35:37,304 INFO L231 Difference]: Finished difference. Result has 538 places, 698 transitions, 10932 flow [2024-06-28 02:35:37,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10617, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=639, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10932, PETRI_PLACES=538, PETRI_TRANSITIONS=698} [2024-06-28 02:35:37,305 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 496 predicate places. [2024-06-28 02:35:37,305 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 698 transitions, 10932 flow [2024-06-28 02:35:37,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:35:37,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:35:37,305 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] [2024-06-28 02:35:37,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-28 02:35:37,306 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:35:37,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:35:37,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1744391469, now seen corresponding path program 2 times [2024-06-28 02:35:37,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:35:37,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116163542] [2024-06-28 02:35:37,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:35:37,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:35:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:35:37,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:35:37,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:35:37,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116163542] [2024-06-28 02:35:37,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116163542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:35:37,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:35:37,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:35:37,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876502160] [2024-06-28 02:35:37,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:35:37,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:35:37,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:35:37,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:35:37,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:35:37,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:35:37,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 698 transitions, 10932 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:35:37,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:35:37,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:35:37,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:35:39,421 INFO L124 PetriNetUnfolderBase]: 3796/6468 cut-off events. [2024-06-28 02:35:39,421 INFO L125 PetriNetUnfolderBase]: For 1210876/1210876 co-relation queries the response was YES. [2024-06-28 02:35:39,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54577 conditions, 6468 events. 3796/6468 cut-off events. For 1210876/1210876 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 45683 event pairs, 567 based on Foata normal form. 2/6468 useless extension candidates. Maximal degree in co-relation 54335. Up to 5605 conditions per place. [2024-06-28 02:35:39,535 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 671 selfloop transitions, 59 changer transitions 0/738 dead transitions. [2024-06-28 02:35:39,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 738 transitions, 13252 flow [2024-06-28 02:35:39,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:35:39,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:35:39,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-06-28 02:35:39,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5934959349593496 [2024-06-28 02:35:39,537 INFO L175 Difference]: Start difference. First operand has 538 places, 698 transitions, 10932 flow. Second operand 9 states and 219 transitions. [2024-06-28 02:35:39,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 738 transitions, 13252 flow [2024-06-28 02:35:48,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 738 transitions, 13034 flow, removed 85 selfloop flow, removed 4 redundant places. [2024-06-28 02:35:48,728 INFO L231 Difference]: Finished difference. Result has 543 places, 702 transitions, 10973 flow [2024-06-28 02:35:48,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10768, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=643, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10973, PETRI_PLACES=543, PETRI_TRANSITIONS=702} [2024-06-28 02:35:48,728 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 501 predicate places. [2024-06-28 02:35:48,728 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 702 transitions, 10973 flow [2024-06-28 02:35:48,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:35:48,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:35:48,729 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] [2024-06-28 02:35:48,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-28 02:35:48,729 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:35:48,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:35:48,729 INFO L85 PathProgramCache]: Analyzing trace with hash 846142627, now seen corresponding path program 3 times [2024-06-28 02:35:48,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:35:48,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51353802] [2024-06-28 02:35:48,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:35:48,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:35:48,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:35:48,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:35:48,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:35:48,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51353802] [2024-06-28 02:35:48,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51353802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:35:48,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:35:48,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:35:48,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777833830] [2024-06-28 02:35:48,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:35:48,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:35:48,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:35:48,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:35:48,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:35:48,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:35:48,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 702 transitions, 10973 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:35:48,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:35:48,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:35:48,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:35:50,907 INFO L124 PetriNetUnfolderBase]: 3791/6456 cut-off events. [2024-06-28 02:35:50,907 INFO L125 PetriNetUnfolderBase]: For 1196299/1196299 co-relation queries the response was YES. [2024-06-28 02:35:51,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54028 conditions, 6456 events. 3791/6456 cut-off events. For 1196299/1196299 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 45590 event pairs, 667 based on Foata normal form. 2/6451 useless extension candidates. Maximal degree in co-relation 53784. Up to 5715 conditions per place. [2024-06-28 02:35:51,025 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 682 selfloop transitions, 45 changer transitions 0/735 dead transitions. [2024-06-28 02:35:51,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 735 transitions, 12829 flow [2024-06-28 02:35:51,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:35:51,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:35:51,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 02:35:51,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.600609756097561 [2024-06-28 02:35:51,027 INFO L175 Difference]: Start difference. First operand has 543 places, 702 transitions, 10973 flow. Second operand 8 states and 197 transitions. [2024-06-28 02:35:51,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 735 transitions, 12829 flow [2024-06-28 02:36:00,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 735 transitions, 12680 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-28 02:36:00,270 INFO L231 Difference]: Finished difference. Result has 546 places, 702 transitions, 10919 flow [2024-06-28 02:36:00,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10824, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=657, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10919, PETRI_PLACES=546, PETRI_TRANSITIONS=702} [2024-06-28 02:36:00,271 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 504 predicate places. [2024-06-28 02:36:00,271 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 702 transitions, 10919 flow [2024-06-28 02:36:00,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:36:00,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:36:00,271 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] [2024-06-28 02:36:00,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-28 02:36:00,273 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:36:00,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:36:00,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1914592077, now seen corresponding path program 4 times [2024-06-28 02:36:00,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:36:00,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983230558] [2024-06-28 02:36:00,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:36:00,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:36:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:36:00,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:36:00,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:36:00,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983230558] [2024-06-28 02:36:00,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983230558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:36:00,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:36:00,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:36:00,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256992635] [2024-06-28 02:36:00,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:36:00,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:36:00,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:36:00,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:36:00,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:36:00,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:36:00,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 702 transitions, 10919 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:36:00,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:36:00,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:36:00,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:36:02,350 INFO L124 PetriNetUnfolderBase]: 3799/6473 cut-off events. [2024-06-28 02:36:02,350 INFO L125 PetriNetUnfolderBase]: For 1210346/1210346 co-relation queries the response was YES. [2024-06-28 02:36:02,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54085 conditions, 6473 events. 3799/6473 cut-off events. For 1210346/1210346 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 45772 event pairs, 674 based on Foata normal form. 2/6473 useless extension candidates. Maximal degree in co-relation 53840. Up to 5762 conditions per place. [2024-06-28 02:36:02,463 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 682 selfloop transitions, 42 changer transitions 0/732 dead transitions. [2024-06-28 02:36:02,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 732 transitions, 12485 flow [2024-06-28 02:36:02,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:36:02,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:36:02,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-28 02:36:02,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5853658536585366 [2024-06-28 02:36:02,465 INFO L175 Difference]: Start difference. First operand has 546 places, 702 transitions, 10919 flow. Second operand 8 states and 192 transitions. [2024-06-28 02:36:02,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 732 transitions, 12485 flow [2024-06-28 02:36:11,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 732 transitions, 12340 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 02:36:11,781 INFO L231 Difference]: Finished difference. Result has 546 places, 704 transitions, 10915 flow [2024-06-28 02:36:11,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10780, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=660, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10915, PETRI_PLACES=546, PETRI_TRANSITIONS=704} [2024-06-28 02:36:11,782 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 504 predicate places. [2024-06-28 02:36:11,782 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 704 transitions, 10915 flow [2024-06-28 02:36:11,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:36:11,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:36:11,783 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] [2024-06-28 02:36:11,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-28 02:36:11,783 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:36:11,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:36:11,784 INFO L85 PathProgramCache]: Analyzing trace with hash -2094853421, now seen corresponding path program 5 times [2024-06-28 02:36:11,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:36:11,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693376528] [2024-06-28 02:36:11,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:36:11,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:36:11,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:36:11,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:36:11,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:36:11,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693376528] [2024-06-28 02:36:11,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693376528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:36:11,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:36:11,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:36:11,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437678997] [2024-06-28 02:36:11,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:36:11,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:36:11,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:36:11,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:36:11,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:36:11,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:36:11,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 704 transitions, 10915 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:36:11,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:36:11,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:36:11,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:36:13,721 INFO L124 PetriNetUnfolderBase]: 3807/6485 cut-off events. [2024-06-28 02:36:13,722 INFO L125 PetriNetUnfolderBase]: For 1225009/1225009 co-relation queries the response was YES. [2024-06-28 02:36:13,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54146 conditions, 6485 events. 3807/6485 cut-off events. For 1225009/1225009 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 45843 event pairs, 674 based on Foata normal form. 2/6485 useless extension candidates. Maximal degree in co-relation 53901. Up to 5774 conditions per place. [2024-06-28 02:36:13,839 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 685 selfloop transitions, 43 changer transitions 0/736 dead transitions. [2024-06-28 02:36:13,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 555 places, 736 transitions, 12491 flow [2024-06-28 02:36:13,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:36:13,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:36:13,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 230 transitions. [2024-06-28 02:36:13,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5609756097560976 [2024-06-28 02:36:13,840 INFO L175 Difference]: Start difference. First operand has 546 places, 704 transitions, 10915 flow. Second operand 10 states and 230 transitions. [2024-06-28 02:36:13,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 555 places, 736 transitions, 12491 flow [2024-06-28 02:36:21,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 736 transitions, 12378 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 02:36:21,541 INFO L231 Difference]: Finished difference. Result has 550 places, 706 transitions, 10943 flow [2024-06-28 02:36:21,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10802, PETRI_DIFFERENCE_MINUEND_PLACES=540, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=704, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10943, PETRI_PLACES=550, PETRI_TRANSITIONS=706} [2024-06-28 02:36:21,542 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 508 predicate places. [2024-06-28 02:36:21,542 INFO L495 AbstractCegarLoop]: Abstraction has has 550 places, 706 transitions, 10943 flow [2024-06-28 02:36:21,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:36:21,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:36:21,542 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] [2024-06-28 02:36:21,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-28 02:36:21,542 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:36:21,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:36:21,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1514702859, now seen corresponding path program 6 times [2024-06-28 02:36:21,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:36:21,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639994181] [2024-06-28 02:36:21,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:36:21,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:36:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:36:21,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:36:21,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:36:21,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639994181] [2024-06-28 02:36:21,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639994181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:36:21,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:36:21,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:36:21,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185928946] [2024-06-28 02:36:21,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:36:21,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:36:21,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:36:21,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:36:21,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:36:21,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:36:21,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 706 transitions, 10943 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:36:21,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:36:21,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:36:21,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:36:23,587 INFO L124 PetriNetUnfolderBase]: 3815/6495 cut-off events. [2024-06-28 02:36:23,587 INFO L125 PetriNetUnfolderBase]: For 1239204/1239204 co-relation queries the response was YES. [2024-06-28 02:36:23,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54287 conditions, 6495 events. 3815/6495 cut-off events. For 1239204/1239204 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 45839 event pairs, 672 based on Foata normal form. 2/6493 useless extension candidates. Maximal degree in co-relation 54041. Up to 5766 conditions per place. [2024-06-28 02:36:23,701 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 682 selfloop transitions, 49 changer transitions 0/739 dead transitions. [2024-06-28 02:36:23,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 739 transitions, 12523 flow [2024-06-28 02:36:23,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:36:23,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:36:23,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 231 transitions. [2024-06-28 02:36:23,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5634146341463414 [2024-06-28 02:36:23,703 INFO L175 Difference]: Start difference. First operand has 550 places, 706 transitions, 10943 flow. Second operand 10 states and 231 transitions. [2024-06-28 02:36:23,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 559 places, 739 transitions, 12523 flow [2024-06-28 02:36:31,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 739 transitions, 12404 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 02:36:31,291 INFO L231 Difference]: Finished difference. Result has 552 places, 708 transitions, 10973 flow [2024-06-28 02:36:31,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10824, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=706, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=657, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10973, PETRI_PLACES=552, PETRI_TRANSITIONS=708} [2024-06-28 02:36:31,292 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 510 predicate places. [2024-06-28 02:36:31,292 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 708 transitions, 10973 flow [2024-06-28 02:36:31,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 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) [2024-06-28 02:36:31,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:36:31,292 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] [2024-06-28 02:36:31,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-28 02:36:31,292 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:36:31,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:36:31,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1982324620, now seen corresponding path program 1 times [2024-06-28 02:36:31,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:36:31,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941172200] [2024-06-28 02:36:31,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:36:31,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:36:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:36:31,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:36:31,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:36:31,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941172200] [2024-06-28 02:36:31,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941172200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:36:31,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:36:31,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:36:31,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3011343] [2024-06-28 02:36:31,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:36:31,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:36:31,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:36:31,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:36:31,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:36:31,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2024-06-28 02:36:31,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 708 transitions, 10973 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 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) [2024-06-28 02:36:31,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:36:31,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2024-06-28 02:36:31,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:36:33,331 INFO L124 PetriNetUnfolderBase]: 3836/6522 cut-off events. [2024-06-28 02:36:33,331 INFO L125 PetriNetUnfolderBase]: For 1268051/1268051 co-relation queries the response was YES. [2024-06-28 02:36:33,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54936 conditions, 6522 events. 3836/6522 cut-off events. For 1268051/1268051 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 46150 event pairs, 704 based on Foata normal form. 1/6515 useless extension candidates. Maximal degree in co-relation 54689. Up to 5431 conditions per place. [2024-06-28 02:36:33,446 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 459 selfloop transitions, 268 changer transitions 0/735 dead transitions. [2024-06-28 02:36:33,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 558 places, 735 transitions, 12978 flow [2024-06-28 02:36:33,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:36:33,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:36:33,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-28 02:36:33,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6202090592334495 [2024-06-28 02:36:33,448 INFO L175 Difference]: Start difference. First operand has 552 places, 708 transitions, 10973 flow. Second operand 7 states and 178 transitions. [2024-06-28 02:36:33,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 558 places, 735 transitions, 12978 flow Killed by 15