./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe035_power.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-rel/safe035_power.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/safe035_power.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe035_power.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 [2024-06-27 23:01:34,431 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 23:01:34,467 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 23:01:34,470 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 23:01:34,470 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 23:01:34,485 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 23:01:34,485 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 23:01:34,485 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 23:01:34,486 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 23:01:34,486 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 23:01:34,486 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 23:01:34,487 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 23:01:34,487 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 23:01:34,487 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 23:01:34,488 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 23:01:34,488 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 23:01:34,488 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 23:01:34,488 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 23:01:34,489 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 23:01:34,489 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 23:01:34,489 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 23:01:34,490 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 23:01:34,490 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 23:01:34,490 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 23:01:34,490 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 23:01:34,490 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 23:01:34,490 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 23:01:34,491 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 23:01:34,491 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 23:01:34,491 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 23:01:34,491 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 23:01:34,492 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 23:01:34,492 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:01:34,492 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 23:01:34,492 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 23:01:34,492 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 23:01:34,492 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 23:01:34,493 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 23:01:34,493 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 23:01:34,493 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 23:01:34,493 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 23:01:34,493 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 23:01:34,493 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 23:01:34,494 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 23:01:34,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 23:01:34,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 23:01:34,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 23:01:34,680 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 23:01:34,680 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 23:01:34,681 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_power.i [2024-06-27 23:01:35,682 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 23:01:35,874 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 23:01:35,875 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_power.i [2024-06-27 23:01:35,886 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ed532cf5/e191f41723fd482abcfebba731e4a76a/FLAG88384b278 [2024-06-27 23:01:35,913 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ed532cf5/e191f41723fd482abcfebba731e4a76a [2024-06-27 23:01:35,915 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 23:01:35,915 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 23:01:35,916 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe035_power.yml/witness.yml [2024-06-27 23:01:35,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 23:01:35,992 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 23:01:35,994 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 23:01:35,994 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 23:01:35,997 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 23:01:35,998 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:01:35" (1/2) ... [2024-06-27 23:01:35,998 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68bd3279 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:01:35, skipping insertion in model container [2024-06-27 23:01:35,999 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:01:35" (1/2) ... [2024-06-27 23:01:36,000 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3471b384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:01:35, skipping insertion in model container [2024-06-27 23:01:36,001 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:01:35" (2/2) ... [2024-06-27 23:01:36,001 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68bd3279 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:01:36, skipping insertion in model container [2024-06-27 23:01:36,001 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:01:35" (2/2) ... [2024-06-27 23:01:36,002 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 23:01:36,040 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 23:01:36,041 INFO L97 edCorrectnessWitness]: Location invariant before [L873-L873] ! multithreaded || ((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 23:01:36,041 INFO L97 edCorrectnessWitness]: Location invariant before [L871-L871] ! multithreaded || ((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 23:01:36,041 INFO L97 edCorrectnessWitness]: Location invariant before [L874-L874] ! multithreaded || ((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 23:01:36,041 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 23:01:36,042 INFO L106 edCorrectnessWitness]: ghost_update [L869-L869] multithreaded = 1; [2024-06-27 23:01:36,079 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 23:01:36,367 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:01:36,375 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 23:01:36,478 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:01:36,514 INFO L206 MainTranslator]: Completed translation [2024-06-27 23:01:36,515 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:01:36 WrapperNode [2024-06-27 23:01:36,515 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 23:01:36,516 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 23:01:36,516 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 23:01:36,517 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 23:01:36,521 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:01:36" (1/1) ... [2024-06-27 23:01:36,552 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:01:36" (1/1) ... [2024-06-27 23:01:36,576 INFO L138 Inliner]: procedures = 175, calls = 49, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 175 [2024-06-27 23:01:36,576 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 23:01:36,577 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 23:01:36,577 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 23:01:36,577 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 23:01:36,587 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:01:36" (1/1) ... [2024-06-27 23:01:36,588 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:01:36" (1/1) ... [2024-06-27 23:01:36,595 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:01:36" (1/1) ... [2024-06-27 23:01:36,608 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]. [2024-06-27 23:01:36,623 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:01:36" (1/1) ... [2024-06-27 23:01:36,623 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:01:36" (1/1) ... [2024-06-27 23:01:36,631 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:01:36" (1/1) ... [2024-06-27 23:01:36,643 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:01:36" (1/1) ... [2024-06-27 23:01:36,645 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:01:36" (1/1) ... [2024-06-27 23:01:36,647 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:01:36" (1/1) ... [2024-06-27 23:01:36,649 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 23:01:36,664 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 23:01:36,664 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 23:01:36,665 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 23:01:36,665 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:01:36" (1/1) ... [2024-06-27 23:01:36,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:01:36,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:01:36,697 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 23:01:36,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 23:01:36,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 23:01:36,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 23:01:36,727 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 23:01:36,727 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 23:01:36,727 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 23:01:36,727 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 23:01:36,728 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 23:01:36,728 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 23:01:36,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 23:01:36,728 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 23:01:36,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 23:01:36,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 23:01:36,729 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 23:01:36,860 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 23:01:36,862 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 23:01:37,194 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 23:01:37,195 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 23:01:37,371 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 23:01:37,372 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 23:01:37,372 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:01:37 BoogieIcfgContainer [2024-06-27 23:01:37,372 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 23:01:37,375 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 23:01:37,375 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 23:01:37,377 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 23:01:37,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 11:01:35" (1/4) ... [2024-06-27 23:01:37,378 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31cc1af5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:01:37, skipping insertion in model container [2024-06-27 23:01:37,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:01:35" (2/4) ... [2024-06-27 23:01:37,379 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31cc1af5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:01:37, skipping insertion in model container [2024-06-27 23:01:37,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:01:36" (3/4) ... [2024-06-27 23:01:37,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31cc1af5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:01:37, skipping insertion in model container [2024-06-27 23:01:37,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:01:37" (4/4) ... [2024-06-27 23:01:37,381 INFO L112 eAbstractionObserver]: Analyzing ICFG safe035_power.i [2024-06-27 23:01:37,393 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 23:01:37,394 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-27 23:01:37,394 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 23:01:37,430 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 23:01:37,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 43 transitions, 98 flow [2024-06-27 23:01:37,483 INFO L124 PetriNetUnfolderBase]: 0/40 cut-off events. [2024-06-27 23:01:37,484 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:01:37,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 40 events. 0/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 23:01:37,485 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 43 transitions, 98 flow [2024-06-27 23:01:37,488 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 34 transitions, 77 flow [2024-06-27 23:01:37,498 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 23:01:37,503 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;@26073943, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 23:01:37,504 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-27 23:01:37,507 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 23:01:37,507 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 23:01:37,507 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:01:37,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:37,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 23:01:37,508 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)] === [2024-06-27 23:01:37,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:37,513 INFO L85 PathProgramCache]: Analyzing trace with hash 480640100, now seen corresponding path program 1 times [2024-06-27 23:01:37,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:37,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492838244] [2024-06-27 23:01:37,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:37,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:37,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:01:37,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:37,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492838244] [2024-06-27 23:01:37,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492838244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:37,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:37,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 23:01:37,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485319332] [2024-06-27 23:01:37,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:37,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 23:01:37,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:37,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 23:01:37,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 23:01:37,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-06-27 23:01:37,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:37,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:37,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-06-27 23:01:37,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:38,364 INFO L124 PetriNetUnfolderBase]: 1044/1686 cut-off events. [2024-06-27 23:01:38,365 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-06-27 23:01:38,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3326 conditions, 1686 events. 1044/1686 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9076 event pairs, 409 based on Foata normal form. 4/1662 useless extension candidates. Maximal degree in co-relation 3314. Up to 1524 conditions per place. [2024-06-27 23:01:38,379 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 30 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2024-06-27 23:01:38,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 42 transitions, 162 flow [2024-06-27 23:01:38,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 23:01:38,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 23:01:38,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-06-27 23:01:38,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6046511627906976 [2024-06-27 23:01:38,391 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 77 flow. Second operand 3 states and 78 transitions. [2024-06-27 23:01:38,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 42 transitions, 162 flow [2024-06-27 23:01:38,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 42 transitions, 158 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 23:01:38,397 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 93 flow [2024-06-27 23:01:38,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=93, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2024-06-27 23:01:38,402 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -1 predicate places. [2024-06-27 23:01:38,402 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 93 flow [2024-06-27 23:01:38,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:38,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:38,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:01:38,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 23:01:38,404 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:38,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:38,405 INFO L85 PathProgramCache]: Analyzing trace with hash -795775373, now seen corresponding path program 1 times [2024-06-27 23:01:38,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:38,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051035] [2024-06-27 23:01:38,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:38,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:38,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:38,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:01:38,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:38,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051035] [2024-06-27 23:01:38,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:38,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:38,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:01:38,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743147160] [2024-06-27 23:01:38,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:38,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:01:38,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:38,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:01:38,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:01:38,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-27 23:01:38,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 93 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:38,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:38,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-27 23:01:38,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:38,934 INFO L124 PetriNetUnfolderBase]: 1292/2078 cut-off events. [2024-06-27 23:01:38,934 INFO L125 PetriNetUnfolderBase]: For 302/302 co-relation queries the response was YES. [2024-06-27 23:01:38,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4484 conditions, 2078 events. 1292/2078 cut-off events. For 302/302 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 10988 event pairs, 336 based on Foata normal form. 20/2095 useless extension candidates. Maximal degree in co-relation 4471. Up to 1800 conditions per place. [2024-06-27 23:01:38,945 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 43 selfloop transitions, 9 changer transitions 0/59 dead transitions. [2024-06-27 23:01:38,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 59 transitions, 259 flow [2024-06-27 23:01:38,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:01:38,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:01:38,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2024-06-27 23:01:38,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49767441860465117 [2024-06-27 23:01:38,949 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 93 flow. Second operand 5 states and 107 transitions. [2024-06-27 23:01:38,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 59 transitions, 259 flow [2024-06-27 23:01:38,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 59 transitions, 254 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 23:01:38,951 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 154 flow [2024-06-27 23:01:38,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=154, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-06-27 23:01:38,952 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 5 predicate places. [2024-06-27 23:01:38,952 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 154 flow [2024-06-27 23:01:38,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:38,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:38,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:01:38,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 23:01:38,956 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:38,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:38,956 INFO L85 PathProgramCache]: Analyzing trace with hash 144986928, now seen corresponding path program 1 times [2024-06-27 23:01:38,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:38,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900412527] [2024-06-27 23:01:38,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:38,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:38,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:39,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:01:39,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:39,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900412527] [2024-06-27 23:01:39,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900412527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:39,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:39,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 23:01:39,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316535875] [2024-06-27 23:01:39,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:39,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 23:01:39,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:39,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 23:01:39,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 23:01:39,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-06-27 23:01:39,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:39,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:39,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-06-27 23:01:39,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:39,493 INFO L124 PetriNetUnfolderBase]: 1176/1936 cut-off events. [2024-06-27 23:01:39,494 INFO L125 PetriNetUnfolderBase]: For 820/821 co-relation queries the response was YES. [2024-06-27 23:01:39,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4490 conditions, 1936 events. 1176/1936 cut-off events. For 820/821 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 10716 event pairs, 684 based on Foata normal form. 5/1915 useless extension candidates. Maximal degree in co-relation 4472. Up to 1710 conditions per place. [2024-06-27 23:01:39,503 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 34 selfloop transitions, 9 changer transitions 0/55 dead transitions. [2024-06-27 23:01:39,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 55 transitions, 270 flow [2024-06-27 23:01:39,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 23:01:39,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 23:01:39,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-06-27 23:01:39,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5581395348837209 [2024-06-27 23:01:39,508 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 154 flow. Second operand 4 states and 96 transitions. [2024-06-27 23:01:39,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 55 transitions, 270 flow [2024-06-27 23:01:39,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 55 transitions, 270 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 23:01:39,511 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 198 flow [2024-06-27 23:01:39,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=198, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2024-06-27 23:01:39,512 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 9 predicate places. [2024-06-27 23:01:39,512 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 198 flow [2024-06-27 23:01:39,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:39,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:39,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:01:39,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 23:01:39,513 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:39,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:39,514 INFO L85 PathProgramCache]: Analyzing trace with hash 78229821, now seen corresponding path program 1 times [2024-06-27 23:01:39,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:39,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704356240] [2024-06-27 23:01:39,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:39,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:39,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:39,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:01:39,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:39,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704356240] [2024-06-27 23:01:39,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704356240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:39,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:39,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:01:39,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006501521] [2024-06-27 23:01:39,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:39,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:01:39,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:39,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:01:39,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:01:39,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-27 23:01:39,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 198 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:39,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:39,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-27 23:01:39,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:40,131 INFO L124 PetriNetUnfolderBase]: 1432/2317 cut-off events. [2024-06-27 23:01:40,131 INFO L125 PetriNetUnfolderBase]: For 1808/1810 co-relation queries the response was YES. [2024-06-27 23:01:40,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6177 conditions, 2317 events. 1432/2317 cut-off events. For 1808/1810 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 12369 event pairs, 160 based on Foata normal form. 30/2343 useless extension candidates. Maximal degree in co-relation 6155. Up to 1523 conditions per place. [2024-06-27 23:01:40,142 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 57 selfloop transitions, 12 changer transitions 0/76 dead transitions. [2024-06-27 23:01:40,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 76 transitions, 424 flow [2024-06-27 23:01:40,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:01:40,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:01:40,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2024-06-27 23:01:40,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 23:01:40,144 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 198 flow. Second operand 6 states and 129 transitions. [2024-06-27 23:01:40,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 76 transitions, 424 flow [2024-06-27 23:01:40,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 76 transitions, 410 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 23:01:40,149 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 222 flow [2024-06-27 23:01:40,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=222, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2024-06-27 23:01:40,151 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 13 predicate places. [2024-06-27 23:01:40,151 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 222 flow [2024-06-27 23:01:40,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:40,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:40,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:01:40,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 23:01:40,152 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)] === [2024-06-27 23:01:40,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:40,152 INFO L85 PathProgramCache]: Analyzing trace with hash 78225171, now seen corresponding path program 2 times [2024-06-27 23:01:40,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:40,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474646956] [2024-06-27 23:01:40,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:40,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:40,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:40,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:01:40,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:40,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474646956] [2024-06-27 23:01:40,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474646956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:40,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:40,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:01:40,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959291977] [2024-06-27 23:01:40,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:40,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:01:40,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:40,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:01:40,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:01:40,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-27 23:01:40,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 222 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:40,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:40,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-27 23:01:40,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:40,775 INFO L124 PetriNetUnfolderBase]: 1587/2585 cut-off events. [2024-06-27 23:01:40,775 INFO L125 PetriNetUnfolderBase]: For 3140/3142 co-relation queries the response was YES. [2024-06-27 23:01:40,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7238 conditions, 2585 events. 1587/2585 cut-off events. For 3140/3142 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 14177 event pairs, 660 based on Foata normal form. 32/2607 useless extension candidates. Maximal degree in co-relation 7213. Up to 2128 conditions per place. [2024-06-27 23:01:40,790 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 58 selfloop transitions, 12 changer transitions 0/77 dead transitions. [2024-06-27 23:01:40,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 77 transitions, 462 flow [2024-06-27 23:01:40,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:01:40,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:01:40,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-27 23:01:40,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46179401993355484 [2024-06-27 23:01:40,792 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 222 flow. Second operand 7 states and 139 transitions. [2024-06-27 23:01:40,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 77 transitions, 462 flow [2024-06-27 23:01:40,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 77 transitions, 444 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 23:01:40,796 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 262 flow [2024-06-27 23:01:40,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=262, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2024-06-27 23:01:40,797 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 17 predicate places. [2024-06-27 23:01:40,797 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 262 flow [2024-06-27 23:01:40,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:40,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:40,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:01:40,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 23:01:40,798 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)] === [2024-06-27 23:01:40,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:40,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1356027715, now seen corresponding path program 3 times [2024-06-27 23:01:40,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:40,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372995995] [2024-06-27 23:01:40,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:40,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:40,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:40,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:01:40,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:40,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372995995] [2024-06-27 23:01:40,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372995995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:40,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:40,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:01:40,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527735780] [2024-06-27 23:01:40,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:40,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:01:40,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:40,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:01:40,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:01:40,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-27 23:01:40,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 262 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:40,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:40,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-27 23:01:40,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:41,352 INFO L124 PetriNetUnfolderBase]: 1528/2497 cut-off events. [2024-06-27 23:01:41,352 INFO L125 PetriNetUnfolderBase]: For 3955/3957 co-relation queries the response was YES. [2024-06-27 23:01:41,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7082 conditions, 2497 events. 1528/2497 cut-off events. For 3955/3957 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 13643 event pairs, 286 based on Foata normal form. 30/2520 useless extension candidates. Maximal degree in co-relation 7056. Up to 1739 conditions per place. [2024-06-27 23:01:41,365 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 49 selfloop transitions, 14 changer transitions 0/70 dead transitions. [2024-06-27 23:01:41,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 70 transitions, 436 flow [2024-06-27 23:01:41,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:01:41,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:01:41,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-06-27 23:01:41,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2024-06-27 23:01:41,367 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 262 flow. Second operand 6 states and 120 transitions. [2024-06-27 23:01:41,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 70 transitions, 436 flow [2024-06-27 23:01:41,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 70 transitions, 404 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 23:01:41,375 INFO L231 Difference]: Finished difference. Result has 62 places, 49 transitions, 257 flow [2024-06-27 23:01:41,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=257, PETRI_PLACES=62, PETRI_TRANSITIONS=49} [2024-06-27 23:01:41,377 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 18 predicate places. [2024-06-27 23:01:41,377 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 49 transitions, 257 flow [2024-06-27 23:01:41,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:41,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:41,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:01:41,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 23:01:41,378 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:41,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:41,379 INFO L85 PathProgramCache]: Analyzing trace with hash 199629376, now seen corresponding path program 1 times [2024-06-27 23:01:41,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:41,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703375820] [2024-06-27 23:01:41,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:41,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:41,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:41,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:01:41,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:41,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703375820] [2024-06-27 23:01:41,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703375820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:41,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:41,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:01:41,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020551480] [2024-06-27 23:01:41,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:41,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:01:41,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:41,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:01:41,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:01:41,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-06-27 23:01:41,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 49 transitions, 257 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:41,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:41,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-06-27 23:01:41,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:42,106 INFO L124 PetriNetUnfolderBase]: 1425/2377 cut-off events. [2024-06-27 23:01:42,106 INFO L125 PetriNetUnfolderBase]: For 4678/4699 co-relation queries the response was YES. [2024-06-27 23:01:42,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6804 conditions, 2377 events. 1425/2377 cut-off events. For 4678/4699 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 13568 event pairs, 646 based on Foata normal form. 35/2384 useless extension candidates. Maximal degree in co-relation 6778. Up to 1996 conditions per place. [2024-06-27 23:01:42,117 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 42 selfloop transitions, 12 changer transitions 0/66 dead transitions. [2024-06-27 23:01:42,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 66 transitions, 413 flow [2024-06-27 23:01:42,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:01:42,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:01:42,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-06-27 23:01:42,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5441860465116279 [2024-06-27 23:01:42,119 INFO L175 Difference]: Start difference. First operand has 62 places, 49 transitions, 257 flow. Second operand 5 states and 117 transitions. [2024-06-27 23:01:42,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 66 transitions, 413 flow [2024-06-27 23:01:42,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 66 transitions, 383 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-27 23:01:42,123 INFO L231 Difference]: Finished difference. Result has 62 places, 50 transitions, 263 flow [2024-06-27 23:01:42,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=263, PETRI_PLACES=62, PETRI_TRANSITIONS=50} [2024-06-27 23:01:42,123 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 18 predicate places. [2024-06-27 23:01:42,124 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 50 transitions, 263 flow [2024-06-27 23:01:42,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:42,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:42,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:01:42,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 23:01:42,124 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:42,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:42,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1893737831, now seen corresponding path program 1 times [2024-06-27 23:01:42,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:42,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114401324] [2024-06-27 23:01:42,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:42,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:42,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:42,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:01:42,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:42,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114401324] [2024-06-27 23:01:42,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114401324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:42,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:42,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:01:42,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100592704] [2024-06-27 23:01:42,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:42,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:01:42,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:42,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:01:42,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:01:42,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-27 23:01:42,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 50 transitions, 263 flow. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:42,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:42,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-27 23:01:42,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:42,561 INFO L124 PetriNetUnfolderBase]: 1627/2627 cut-off events. [2024-06-27 23:01:42,562 INFO L125 PetriNetUnfolderBase]: For 4570/4574 co-relation queries the response was YES. [2024-06-27 23:01:42,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7710 conditions, 2627 events. 1627/2627 cut-off events. For 4570/4574 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 14460 event pairs, 481 based on Foata normal form. 14/2606 useless extension candidates. Maximal degree in co-relation 7684. Up to 2294 conditions per place. [2024-06-27 23:01:42,574 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 53 selfloop transitions, 13 changer transitions 0/74 dead transitions. [2024-06-27 23:01:42,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 74 transitions, 459 flow [2024-06-27 23:01:42,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:01:42,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:01:42,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-27 23:01:42,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5581395348837209 [2024-06-27 23:01:42,575 INFO L175 Difference]: Start difference. First operand has 62 places, 50 transitions, 263 flow. Second operand 5 states and 120 transitions. [2024-06-27 23:01:42,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 74 transitions, 459 flow [2024-06-27 23:01:42,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 74 transitions, 435 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 23:01:42,581 INFO L231 Difference]: Finished difference. Result has 64 places, 56 transitions, 304 flow [2024-06-27 23:01:42,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=304, PETRI_PLACES=64, PETRI_TRANSITIONS=56} [2024-06-27 23:01:42,581 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 20 predicate places. [2024-06-27 23:01:42,582 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 56 transitions, 304 flow [2024-06-27 23:01:42,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:42,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:42,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:01:42,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 23:01:42,582 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:42,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:42,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1893536367, now seen corresponding path program 2 times [2024-06-27 23:01:42,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:42,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742967819] [2024-06-27 23:01:42,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:42,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:42,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:01:42,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:42,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742967819] [2024-06-27 23:01:42,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742967819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:42,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:42,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:01:42,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453639445] [2024-06-27 23:01:42,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:42,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:01:42,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:42,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:01:42,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:01:42,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-27 23:01:42,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 56 transitions, 304 flow. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:42,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:42,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-27 23:01:42,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:43,088 INFO L124 PetriNetUnfolderBase]: 1629/2634 cut-off events. [2024-06-27 23:01:43,088 INFO L125 PetriNetUnfolderBase]: For 5640/5648 co-relation queries the response was YES. [2024-06-27 23:01:43,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8578 conditions, 2634 events. 1629/2634 cut-off events. For 5640/5648 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 14542 event pairs, 546 based on Foata normal form. 6/2633 useless extension candidates. Maximal degree in co-relation 8551. Up to 2285 conditions per place. [2024-06-27 23:01:43,107 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 49 selfloop transitions, 20 changer transitions 0/77 dead transitions. [2024-06-27 23:01:43,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 77 transitions, 522 flow [2024-06-27 23:01:43,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:01:43,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:01:43,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-27 23:01:43,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5534883720930233 [2024-06-27 23:01:43,109 INFO L175 Difference]: Start difference. First operand has 64 places, 56 transitions, 304 flow. Second operand 5 states and 119 transitions. [2024-06-27 23:01:43,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 77 transitions, 522 flow [2024-06-27 23:01:43,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 77 transitions, 495 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-27 23:01:43,115 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 386 flow [2024-06-27 23:01:43,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=386, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2024-06-27 23:01:43,116 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 23 predicate places. [2024-06-27 23:01:43,116 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 386 flow [2024-06-27 23:01:43,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:43,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:43,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:01:43,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 23:01:43,117 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:43,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:43,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1956118253, now seen corresponding path program 1 times [2024-06-27 23:01:43,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:43,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624477729] [2024-06-27 23:01:43,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:43,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:43,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:01:43,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:43,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624477729] [2024-06-27 23:01:43,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624477729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:43,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:43,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:01:43,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033309509] [2024-06-27 23:01:43,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:43,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:01:43,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:43,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:01:43,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:01:43,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-06-27 23:01:43,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 386 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:43,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:43,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-06-27 23:01:43,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:43,665 INFO L124 PetriNetUnfolderBase]: 1463/2424 cut-off events. [2024-06-27 23:01:43,666 INFO L125 PetriNetUnfolderBase]: For 6926/6953 co-relation queries the response was YES. [2024-06-27 23:01:43,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8138 conditions, 2424 events. 1463/2424 cut-off events. For 6926/6953 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 13676 event pairs, 595 based on Foata normal form. 42/2438 useless extension candidates. Maximal degree in co-relation 8110. Up to 1938 conditions per place. [2024-06-27 23:01:43,676 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 52 selfloop transitions, 15 changer transitions 0/82 dead transitions. [2024-06-27 23:01:43,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 82 transitions, 590 flow [2024-06-27 23:01:43,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:01:43,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:01:43,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-06-27 23:01:43,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5441860465116279 [2024-06-27 23:01:43,678 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 386 flow. Second operand 5 states and 117 transitions. [2024-06-27 23:01:43,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 82 transitions, 590 flow [2024-06-27 23:01:43,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 82 transitions, 560 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-27 23:01:43,683 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 422 flow [2024-06-27 23:01:43,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=422, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2024-06-27 23:01:43,684 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 27 predicate places. [2024-06-27 23:01:43,684 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 422 flow [2024-06-27 23:01:43,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:43,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:43,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:01:43,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 23:01:43,685 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:43,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:43,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1423667696, now seen corresponding path program 1 times [2024-06-27 23:01:43,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:43,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295793234] [2024-06-27 23:01:43,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:43,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:43,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:44,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:01:44,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:44,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295793234] [2024-06-27 23:01:44,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295793234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:44,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:44,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:01:44,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743533138] [2024-06-27 23:01:44,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:44,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:01:44,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:44,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:01:44,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:01:44,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-27 23:01:44,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 65 transitions, 422 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:44,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:44,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-27 23:01:44,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:44,423 INFO L124 PetriNetUnfolderBase]: 2165/3456 cut-off events. [2024-06-27 23:01:44,423 INFO L125 PetriNetUnfolderBase]: For 14009/14009 co-relation queries the response was YES. [2024-06-27 23:01:44,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12053 conditions, 3456 events. 2165/3456 cut-off events. For 14009/14009 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 19466 event pairs, 993 based on Foata normal form. 73/3516 useless extension candidates. Maximal degree in co-relation 12022. Up to 2826 conditions per place. [2024-06-27 23:01:44,443 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 87 selfloop transitions, 12 changer transitions 0/105 dead transitions. [2024-06-27 23:01:44,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 105 transitions, 807 flow [2024-06-27 23:01:44,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:01:44,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:01:44,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-27 23:01:44,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4684385382059801 [2024-06-27 23:01:44,444 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 422 flow. Second operand 7 states and 141 transitions. [2024-06-27 23:01:44,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 105 transitions, 807 flow [2024-06-27 23:01:44,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 105 transitions, 780 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 23:01:44,459 INFO L231 Difference]: Finished difference. Result has 79 places, 76 transitions, 529 flow [2024-06-27 23:01:44,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=529, PETRI_PLACES=79, PETRI_TRANSITIONS=76} [2024-06-27 23:01:44,459 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 35 predicate places. [2024-06-27 23:01:44,459 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 76 transitions, 529 flow [2024-06-27 23:01:44,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:44,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:44,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:01:44,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 23:01:44,460 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:44,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:44,461 INFO L85 PathProgramCache]: Analyzing trace with hash -503817499, now seen corresponding path program 1 times [2024-06-27 23:01:44,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:44,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654029217] [2024-06-27 23:01:44,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:44,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:44,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:01:44,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:44,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654029217] [2024-06-27 23:01:44,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654029217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:44,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:44,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:01:44,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876413438] [2024-06-27 23:01:44,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:44,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:01:44,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:44,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:01:44,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:01:44,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-27 23:01:44,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 76 transitions, 529 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:44,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:44,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-27 23:01:44,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:45,284 INFO L124 PetriNetUnfolderBase]: 2223/3677 cut-off events. [2024-06-27 23:01:45,284 INFO L125 PetriNetUnfolderBase]: For 19840/19871 co-relation queries the response was YES. [2024-06-27 23:01:45,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13529 conditions, 3677 events. 2223/3677 cut-off events. For 19840/19871 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 22042 event pairs, 744 based on Foata normal form. 75/3738 useless extension candidates. Maximal degree in co-relation 13494. Up to 2861 conditions per place. [2024-06-27 23:01:45,304 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 64 selfloop transitions, 24 changer transitions 0/100 dead transitions. [2024-06-27 23:01:45,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 100 transitions, 795 flow [2024-06-27 23:01:45,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:01:45,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:01:45,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-27 23:01:45,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5503875968992248 [2024-06-27 23:01:45,305 INFO L175 Difference]: Start difference. First operand has 79 places, 76 transitions, 529 flow. Second operand 6 states and 142 transitions. [2024-06-27 23:01:45,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 100 transitions, 795 flow [2024-06-27 23:01:45,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 100 transitions, 781 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-27 23:01:45,321 INFO L231 Difference]: Finished difference. Result has 84 places, 77 transitions, 577 flow [2024-06-27 23:01:45,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=577, PETRI_PLACES=84, PETRI_TRANSITIONS=77} [2024-06-27 23:01:45,322 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 40 predicate places. [2024-06-27 23:01:45,322 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 77 transitions, 577 flow [2024-06-27 23:01:45,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:45,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:45,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:01:45,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 23:01:45,323 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:45,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:45,323 INFO L85 PathProgramCache]: Analyzing trace with hash 291998502, now seen corresponding path program 2 times [2024-06-27 23:01:45,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:45,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173127695] [2024-06-27 23:01:45,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:45,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:45,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:45,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:01:45,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:45,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173127695] [2024-06-27 23:01:45,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173127695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:45,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:45,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:01:45,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416713509] [2024-06-27 23:01:45,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:45,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:01:45,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:45,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:01:45,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:01:45,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-27 23:01:45,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 77 transitions, 577 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:45,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:45,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-27 23:01:45,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:46,181 INFO L124 PetriNetUnfolderBase]: 2841/4540 cut-off events. [2024-06-27 23:01:46,182 INFO L125 PetriNetUnfolderBase]: For 20934/20936 co-relation queries the response was YES. [2024-06-27 23:01:46,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16701 conditions, 4540 events. 2841/4540 cut-off events. For 20934/20936 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 27079 event pairs, 1343 based on Foata normal form. 67/4596 useless extension candidates. Maximal degree in co-relation 16663. Up to 3539 conditions per place. [2024-06-27 23:01:46,208 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 92 selfloop transitions, 18 changer transitions 0/116 dead transitions. [2024-06-27 23:01:46,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 116 transitions, 1008 flow [2024-06-27 23:01:46,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:01:46,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:01:46,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2024-06-27 23:01:46,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4750830564784053 [2024-06-27 23:01:46,210 INFO L175 Difference]: Start difference. First operand has 84 places, 77 transitions, 577 flow. Second operand 7 states and 143 transitions. [2024-06-27 23:01:46,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 116 transitions, 1008 flow [2024-06-27 23:01:46,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 116 transitions, 939 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 23:01:46,235 INFO L231 Difference]: Finished difference. Result has 89 places, 85 transitions, 666 flow [2024-06-27 23:01:46,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=527, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=666, PETRI_PLACES=89, PETRI_TRANSITIONS=85} [2024-06-27 23:01:46,236 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 45 predicate places. [2024-06-27 23:01:46,236 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 85 transitions, 666 flow [2024-06-27 23:01:46,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:46,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:46,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:01:46,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 23:01:46,236 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:46,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:46,237 INFO L85 PathProgramCache]: Analyzing trace with hash 292006159, now seen corresponding path program 2 times [2024-06-27 23:01:46,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:46,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337996392] [2024-06-27 23:01:46,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:46,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:46,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:46,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:01:46,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:46,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337996392] [2024-06-27 23:01:46,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337996392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:46,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:46,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:01:46,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143449923] [2024-06-27 23:01:46,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:46,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:01:46,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:46,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:01:46,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:01:46,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-27 23:01:46,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 85 transitions, 666 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:46,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:46,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-27 23:01:46,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:47,165 INFO L124 PetriNetUnfolderBase]: 3209/5254 cut-off events. [2024-06-27 23:01:47,165 INFO L125 PetriNetUnfolderBase]: For 32698/32738 co-relation queries the response was YES. [2024-06-27 23:01:47,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20095 conditions, 5254 events. 3209/5254 cut-off events. For 32698/32738 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 33558 event pairs, 1033 based on Foata normal form. 86/5308 useless extension candidates. Maximal degree in co-relation 20054. Up to 3063 conditions per place. [2024-06-27 23:01:47,194 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 77 selfloop transitions, 30 changer transitions 0/121 dead transitions. [2024-06-27 23:01:47,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 121 transitions, 1065 flow [2024-06-27 23:01:47,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:01:47,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:01:47,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-27 23:01:47,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5775193798449613 [2024-06-27 23:01:47,196 INFO L175 Difference]: Start difference. First operand has 89 places, 85 transitions, 666 flow. Second operand 6 states and 149 transitions. [2024-06-27 23:01:47,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 121 transitions, 1065 flow [2024-06-27 23:01:47,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 121 transitions, 1036 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 23:01:47,221 INFO L231 Difference]: Finished difference. Result has 93 places, 89 transitions, 759 flow [2024-06-27 23:01:47,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=759, PETRI_PLACES=93, PETRI_TRANSITIONS=89} [2024-06-27 23:01:47,223 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 49 predicate places. [2024-06-27 23:01:47,223 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 89 transitions, 759 flow [2024-06-27 23:01:47,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:47,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:47,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:01:47,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 23:01:47,224 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)] === [2024-06-27 23:01:47,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:47,224 INFO L85 PathProgramCache]: Analyzing trace with hash -2147063116, now seen corresponding path program 1 times [2024-06-27 23:01:47,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:47,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577920064] [2024-06-27 23:01:47,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:47,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:47,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:01:47,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:47,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577920064] [2024-06-27 23:01:47,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577920064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:47,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:47,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:01:47,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334161537] [2024-06-27 23:01:47,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:47,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:01:47,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:47,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:01:47,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:01:47,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-27 23:01:47,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 89 transitions, 759 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:47,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:47,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-27 23:01:47,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:48,307 INFO L124 PetriNetUnfolderBase]: 3072/5100 cut-off events. [2024-06-27 23:01:48,307 INFO L125 PetriNetUnfolderBase]: For 31839/31877 co-relation queries the response was YES. [2024-06-27 23:01:48,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19472 conditions, 5100 events. 3072/5100 cut-off events. For 31839/31877 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 32921 event pairs, 996 based on Foata normal form. 74/5142 useless extension candidates. Maximal degree in co-relation 19429. Up to 3831 conditions per place. [2024-06-27 23:01:48,341 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 84 selfloop transitions, 20 changer transitions 0/117 dead transitions. [2024-06-27 23:01:48,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 117 transitions, 1080 flow [2024-06-27 23:01:48,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:01:48,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:01:48,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 150 transitions. [2024-06-27 23:01:48,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4983388704318937 [2024-06-27 23:01:48,343 INFO L175 Difference]: Start difference. First operand has 93 places, 89 transitions, 759 flow. Second operand 7 states and 150 transitions. [2024-06-27 23:01:48,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 117 transitions, 1080 flow [2024-06-27 23:01:48,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 117 transitions, 1038 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-27 23:01:48,379 INFO L231 Difference]: Finished difference. Result has 98 places, 90 transitions, 780 flow [2024-06-27 23:01:48,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=780, PETRI_PLACES=98, PETRI_TRANSITIONS=90} [2024-06-27 23:01:48,380 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 54 predicate places. [2024-06-27 23:01:48,380 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 90 transitions, 780 flow [2024-06-27 23:01:48,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:48,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:48,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:01:48,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 23:01:48,381 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:48,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:48,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1188665528, now seen corresponding path program 1 times [2024-06-27 23:01:48,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:48,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272760972] [2024-06-27 23:01:48,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:48,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:48,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:01:48,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:48,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272760972] [2024-06-27 23:01:48,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272760972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:48,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:48,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:01:48,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147422954] [2024-06-27 23:01:48,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:48,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:01:48,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:48,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:01:48,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:01:48,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-27 23:01:48,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 90 transitions, 780 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:48,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:48,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-27 23:01:48,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:49,480 INFO L124 PetriNetUnfolderBase]: 3218/5361 cut-off events. [2024-06-27 23:01:49,480 INFO L125 PetriNetUnfolderBase]: For 33752/33790 co-relation queries the response was YES. [2024-06-27 23:01:49,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20437 conditions, 5361 events. 3218/5361 cut-off events. For 33752/33790 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 34940 event pairs, 1077 based on Foata normal form. 78/5407 useless extension candidates. Maximal degree in co-relation 20391. Up to 3456 conditions per place. [2024-06-27 23:01:49,511 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 84 selfloop transitions, 22 changer transitions 0/119 dead transitions. [2024-06-27 23:01:49,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 119 transitions, 1118 flow [2024-06-27 23:01:49,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:01:49,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:01:49,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 151 transitions. [2024-06-27 23:01:49,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5016611295681063 [2024-06-27 23:01:49,512 INFO L175 Difference]: Start difference. First operand has 98 places, 90 transitions, 780 flow. Second operand 7 states and 151 transitions. [2024-06-27 23:01:49,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 119 transitions, 1118 flow [2024-06-27 23:01:49,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 119 transitions, 1078 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 23:01:49,549 INFO L231 Difference]: Finished difference. Result has 100 places, 91 transitions, 812 flow [2024-06-27 23:01:49,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=812, PETRI_PLACES=100, PETRI_TRANSITIONS=91} [2024-06-27 23:01:49,550 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 56 predicate places. [2024-06-27 23:01:49,550 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 91 transitions, 812 flow [2024-06-27 23:01:49,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:49,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:49,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:01:49,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 23:01:49,551 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:49,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:49,551 INFO L85 PathProgramCache]: Analyzing trace with hash -349905305, now seen corresponding path program 1 times [2024-06-27 23:01:49,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:49,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978170542] [2024-06-27 23:01:49,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:49,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:49,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:49,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:01:49,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:49,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978170542] [2024-06-27 23:01:49,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978170542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:49,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:49,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:01:49,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894339991] [2024-06-27 23:01:49,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:49,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:01:49,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:49,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:01:49,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:01:49,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-27 23:01:49,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 91 transitions, 812 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:49,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:49,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-27 23:01:49,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:50,436 INFO L124 PetriNetUnfolderBase]: 3255/5395 cut-off events. [2024-06-27 23:01:50,437 INFO L125 PetriNetUnfolderBase]: For 35124/35173 co-relation queries the response was YES. [2024-06-27 23:01:50,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21153 conditions, 5395 events. 3255/5395 cut-off events. For 35124/35173 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 35168 event pairs, 1000 based on Foata normal form. 56/5415 useless extension candidates. Maximal degree in co-relation 21107. Up to 3732 conditions per place. [2024-06-27 23:01:50,469 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 79 selfloop transitions, 34 changer transitions 0/127 dead transitions. [2024-06-27 23:01:50,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 127 transitions, 1245 flow [2024-06-27 23:01:50,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:01:50,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:01:50,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-27 23:01:50,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5697674418604651 [2024-06-27 23:01:50,471 INFO L175 Difference]: Start difference. First operand has 100 places, 91 transitions, 812 flow. Second operand 6 states and 147 transitions. [2024-06-27 23:01:50,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 127 transitions, 1245 flow [2024-06-27 23:01:50,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 127 transitions, 1196 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 23:01:50,513 INFO L231 Difference]: Finished difference. Result has 103 places, 98 transitions, 978 flow [2024-06-27 23:01:50,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=978, PETRI_PLACES=103, PETRI_TRANSITIONS=98} [2024-06-27 23:01:50,514 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 59 predicate places. [2024-06-27 23:01:50,514 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 98 transitions, 978 flow [2024-06-27 23:01:50,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:50,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:50,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:01:50,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 23:01:50,515 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)] === [2024-06-27 23:01:50,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:50,515 INFO L85 PathProgramCache]: Analyzing trace with hash -350055252, now seen corresponding path program 1 times [2024-06-27 23:01:50,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:50,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682332542] [2024-06-27 23:01:50,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:50,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:50,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:50,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:01:50,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:50,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682332542] [2024-06-27 23:01:50,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682332542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:50,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:50,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:01:50,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083058183] [2024-06-27 23:01:50,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:50,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:01:50,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:50,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:01:50,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:01:50,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-27 23:01:50,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 98 transitions, 978 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:50,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:50,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-27 23:01:50,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:51,518 INFO L124 PetriNetUnfolderBase]: 3713/5977 cut-off events. [2024-06-27 23:01:51,518 INFO L125 PetriNetUnfolderBase]: For 37694/37700 co-relation queries the response was YES. [2024-06-27 23:01:51,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24662 conditions, 5977 events. 3713/5977 cut-off events. For 37694/37700 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 37977 event pairs, 1069 based on Foata normal form. 30/5989 useless extension candidates. Maximal degree in co-relation 24614. Up to 2222 conditions per place. [2024-06-27 23:01:51,557 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 110 selfloop transitions, 58 changer transitions 0/175 dead transitions. [2024-06-27 23:01:51,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 175 transitions, 1903 flow [2024-06-27 23:01:51,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:01:51,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:01:51,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 23:01:51,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5494186046511628 [2024-06-27 23:01:51,560 INFO L175 Difference]: Start difference. First operand has 103 places, 98 transitions, 978 flow. Second operand 8 states and 189 transitions. [2024-06-27 23:01:51,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 175 transitions, 1903 flow [2024-06-27 23:01:51,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 175 transitions, 1853 flow, removed 20 selfloop flow, removed 1 redundant places. [2024-06-27 23:01:51,618 INFO L231 Difference]: Finished difference. Result has 115 places, 127 transitions, 1523 flow [2024-06-27 23:01:51,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=942, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1523, PETRI_PLACES=115, PETRI_TRANSITIONS=127} [2024-06-27 23:01:51,618 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 71 predicate places. [2024-06-27 23:01:51,618 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 127 transitions, 1523 flow [2024-06-27 23:01:51,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:51,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:51,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:01:51,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 23:01:51,619 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:51,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:51,620 INFO L85 PathProgramCache]: Analyzing trace with hash 269534097, now seen corresponding path program 1 times [2024-06-27 23:01:51,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:51,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347604234] [2024-06-27 23:01:51,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:51,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:51,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:01:51,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:51,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347604234] [2024-06-27 23:01:51,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347604234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:51,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:51,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:01:51,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121147728] [2024-06-27 23:01:51,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:51,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:01:51,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:51,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:01:51,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:01:51,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-27 23:01:51,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 127 transitions, 1523 flow. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 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) [2024-06-27 23:01:51,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:51,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-27 23:01:51,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:52,528 INFO L124 PetriNetUnfolderBase]: 3426/5664 cut-off events. [2024-06-27 23:01:52,528 INFO L125 PetriNetUnfolderBase]: For 48839/48931 co-relation queries the response was YES. [2024-06-27 23:01:52,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27218 conditions, 5664 events. 3426/5664 cut-off events. For 48839/48931 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 37049 event pairs, 719 based on Foata normal form. 27/5638 useless extension candidates. Maximal degree in co-relation 27163. Up to 4283 conditions per place. [2024-06-27 23:01:52,576 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 123 selfloop transitions, 22 changer transitions 0/160 dead transitions. [2024-06-27 23:01:52,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 160 transitions, 2003 flow [2024-06-27 23:01:52,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:01:52,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:01:52,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-27 23:01:52,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5465116279069767 [2024-06-27 23:01:52,577 INFO L175 Difference]: Start difference. First operand has 115 places, 127 transitions, 1523 flow. Second operand 6 states and 141 transitions. [2024-06-27 23:01:52,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 160 transitions, 2003 flow [2024-06-27 23:01:52,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 160 transitions, 1872 flow, removed 51 selfloop flow, removed 2 redundant places. [2024-06-27 23:01:52,668 INFO L231 Difference]: Finished difference. Result has 119 places, 132 transitions, 1516 flow [2024-06-27 23:01:52,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1400, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1516, PETRI_PLACES=119, PETRI_TRANSITIONS=132} [2024-06-27 23:01:52,668 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 75 predicate places. [2024-06-27 23:01:52,668 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 132 transitions, 1516 flow [2024-06-27 23:01:52,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 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) [2024-06-27 23:01:52,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:52,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:01:52,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 23:01:52,669 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:52,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:52,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1212743411, now seen corresponding path program 2 times [2024-06-27 23:01:52,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:52,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139031816] [2024-06-27 23:01:52,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:52,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:52,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:52,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:01:52,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:52,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139031816] [2024-06-27 23:01:52,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139031816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:52,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:52,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:01:52,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17162573] [2024-06-27 23:01:52,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:52,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:01:52,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:52,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:01:52,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:01:52,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-27 23:01:52,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 132 transitions, 1516 flow. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 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) [2024-06-27 23:01:52,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:52,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-27 23:01:52,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:53,651 INFO L124 PetriNetUnfolderBase]: 3545/5845 cut-off events. [2024-06-27 23:01:53,652 INFO L125 PetriNetUnfolderBase]: For 54261/54353 co-relation queries the response was YES. [2024-06-27 23:01:53,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29531 conditions, 5845 events. 3545/5845 cut-off events. For 54261/54353 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 38255 event pairs, 780 based on Foata normal form. 25/5817 useless extension candidates. Maximal degree in co-relation 29475. Up to 4261 conditions per place. [2024-06-27 23:01:53,685 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 106 selfloop transitions, 42 changer transitions 0/163 dead transitions. [2024-06-27 23:01:53,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 163 transitions, 2080 flow [2024-06-27 23:01:53,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:01:53,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:01:53,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-27 23:01:53,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5426356589147286 [2024-06-27 23:01:53,686 INFO L175 Difference]: Start difference. First operand has 119 places, 132 transitions, 1516 flow. Second operand 6 states and 140 transitions. [2024-06-27 23:01:53,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 163 transitions, 2080 flow [2024-06-27 23:01:53,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 163 transitions, 1984 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-27 23:01:53,764 INFO L231 Difference]: Finished difference. Result has 122 places, 142 transitions, 1689 flow [2024-06-27 23:01:53,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1424, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1689, PETRI_PLACES=122, PETRI_TRANSITIONS=142} [2024-06-27 23:01:53,764 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 78 predicate places. [2024-06-27 23:01:53,764 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 142 transitions, 1689 flow [2024-06-27 23:01:53,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 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) [2024-06-27 23:01:53,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:53,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:01:53,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 23:01:53,765 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:53,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:53,765 INFO L85 PathProgramCache]: Analyzing trace with hash -553430111, now seen corresponding path program 3 times [2024-06-27 23:01:53,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:53,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724765471] [2024-06-27 23:01:53,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:53,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:53,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:53,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:01:53,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:53,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724765471] [2024-06-27 23:01:53,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724765471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:53,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:53,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:01:53,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023426009] [2024-06-27 23:01:53,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:53,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:01:53,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:53,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:01:53,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:01:53,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-27 23:01:53,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 142 transitions, 1689 flow. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 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) [2024-06-27 23:01:53,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:53,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-27 23:01:53,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:54,657 INFO L124 PetriNetUnfolderBase]: 3484/5754 cut-off events. [2024-06-27 23:01:54,658 INFO L125 PetriNetUnfolderBase]: For 62180/62264 co-relation queries the response was YES. [2024-06-27 23:01:54,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30840 conditions, 5754 events. 3484/5754 cut-off events. For 62180/62264 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 37667 event pairs, 798 based on Foata normal form. 35/5734 useless extension candidates. Maximal degree in co-relation 30783. Up to 4461 conditions per place. [2024-06-27 23:01:54,696 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 116 selfloop transitions, 32 changer transitions 0/163 dead transitions. [2024-06-27 23:01:54,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 163 transitions, 2105 flow [2024-06-27 23:01:54,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:01:54,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:01:54,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-06-27 23:01:54,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5720930232558139 [2024-06-27 23:01:54,697 INFO L175 Difference]: Start difference. First operand has 122 places, 142 transitions, 1689 flow. Second operand 5 states and 123 transitions. [2024-06-27 23:01:54,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 163 transitions, 2105 flow [2024-06-27 23:01:54,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 163 transitions, 2005 flow, removed 40 selfloop flow, removed 2 redundant places. [2024-06-27 23:01:54,789 INFO L231 Difference]: Finished difference. Result has 125 places, 142 transitions, 1676 flow [2024-06-27 23:01:54,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1589, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1676, PETRI_PLACES=125, PETRI_TRANSITIONS=142} [2024-06-27 23:01:54,789 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 81 predicate places. [2024-06-27 23:01:54,789 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 142 transitions, 1676 flow [2024-06-27 23:01:54,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 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) [2024-06-27 23:01:54,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:54,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:01:54,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 23:01:54,790 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)] === [2024-06-27 23:01:54,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:54,790 INFO L85 PathProgramCache]: Analyzing trace with hash 367521919, now seen corresponding path program 4 times [2024-06-27 23:01:54,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:54,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44189118] [2024-06-27 23:01:54,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:54,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:54,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:54,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:01:54,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:54,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44189118] [2024-06-27 23:01:54,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44189118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:54,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:54,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:01:54,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466682513] [2024-06-27 23:01:54,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:54,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:01:54,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:54,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:01:54,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:01:54,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-27 23:01:54,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 142 transitions, 1676 flow. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 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) [2024-06-27 23:01:54,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:54,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-27 23:01:54,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:55,791 INFO L124 PetriNetUnfolderBase]: 3502/5780 cut-off events. [2024-06-27 23:01:55,791 INFO L125 PetriNetUnfolderBase]: For 60281/60365 co-relation queries the response was YES. [2024-06-27 23:01:55,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31114 conditions, 5780 events. 3502/5780 cut-off events. For 60281/60365 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 37898 event pairs, 798 based on Foata normal form. 31/5756 useless extension candidates. Maximal degree in co-relation 31055. Up to 4438 conditions per place. [2024-06-27 23:01:55,832 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 103 selfloop transitions, 53 changer transitions 0/171 dead transitions. [2024-06-27 23:01:55,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 171 transitions, 2192 flow [2024-06-27 23:01:55,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:01:55,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:01:55,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-27 23:01:55,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5581395348837209 [2024-06-27 23:01:55,833 INFO L175 Difference]: Start difference. First operand has 125 places, 142 transitions, 1676 flow. Second operand 6 states and 144 transitions. [2024-06-27 23:01:55,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 171 transitions, 2192 flow [2024-06-27 23:01:55,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 171 transitions, 2112 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-27 23:01:55,906 INFO L231 Difference]: Finished difference. Result has 128 places, 148 transitions, 1847 flow [2024-06-27 23:01:55,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1596, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1847, PETRI_PLACES=128, PETRI_TRANSITIONS=148} [2024-06-27 23:01:55,906 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 84 predicate places. [2024-06-27 23:01:55,906 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 148 transitions, 1847 flow [2024-06-27 23:01:55,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 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) [2024-06-27 23:01:55,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:55,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:01:55,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 23:01:55,907 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:01:55,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:55,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1419396851, now seen corresponding path program 5 times [2024-06-27 23:01:55,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:55,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115380409] [2024-06-27 23:01:55,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:55,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:55,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:56,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:01:56,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:56,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115380409] [2024-06-27 23:01:56,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115380409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:56,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:56,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:01:56,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389210425] [2024-06-27 23:01:56,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:56,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:01:56,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:56,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:01:56,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:01:56,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-27 23:01:56,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 148 transitions, 1847 flow. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 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) [2024-06-27 23:01:56,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:56,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-27 23:01:56,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:56,881 INFO L124 PetriNetUnfolderBase]: 3535/5829 cut-off events. [2024-06-27 23:01:56,881 INFO L125 PetriNetUnfolderBase]: For 64414/64508 co-relation queries the response was YES. [2024-06-27 23:01:56,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32255 conditions, 5829 events. 3535/5829 cut-off events. For 64414/64508 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 38238 event pairs, 1123 based on Foata normal form. 30/5801 useless extension candidates. Maximal degree in co-relation 32194. Up to 4217 conditions per place. [2024-06-27 23:01:56,923 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 88 selfloop transitions, 66 changer transitions 0/169 dead transitions. [2024-06-27 23:01:56,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 169 transitions, 2417 flow [2024-06-27 23:01:56,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:01:56,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:01:56,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-27 23:01:56,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271317829457365 [2024-06-27 23:01:56,924 INFO L175 Difference]: Start difference. First operand has 128 places, 148 transitions, 1847 flow. Second operand 6 states and 136 transitions. [2024-06-27 23:01:56,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 169 transitions, 2417 flow [2024-06-27 23:01:57,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 169 transitions, 2320 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-27 23:01:57,013 INFO L231 Difference]: Finished difference. Result has 132 places, 154 transitions, 2040 flow [2024-06-27 23:01:57,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1750, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2040, PETRI_PLACES=132, PETRI_TRANSITIONS=154} [2024-06-27 23:01:57,014 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 88 predicate places. [2024-06-27 23:01:57,014 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 154 transitions, 2040 flow [2024-06-27 23:01:57,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 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) [2024-06-27 23:01:57,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:57,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:01:57,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 23:01:57,015 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)] === [2024-06-27 23:01:57,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:57,015 INFO L85 PathProgramCache]: Analyzing trace with hash -302634701, now seen corresponding path program 6 times [2024-06-27 23:01:57,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:57,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027389503] [2024-06-27 23:01:57,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:57,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:57,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:01:57,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:57,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027389503] [2024-06-27 23:01:57,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027389503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:57,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:57,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:01:57,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678899684] [2024-06-27 23:01:57,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:57,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:01:57,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:57,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:01:57,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:01:57,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-27 23:01:57,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 154 transitions, 2040 flow. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 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) [2024-06-27 23:01:57,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:57,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-27 23:01:57,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:58,115 INFO L124 PetriNetUnfolderBase]: 3512/5784 cut-off events. [2024-06-27 23:01:58,115 INFO L125 PetriNetUnfolderBase]: For 75806/75890 co-relation queries the response was YES. [2024-06-27 23:01:58,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33197 conditions, 5784 events. 3512/5784 cut-off events. For 75806/75890 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 37692 event pairs, 1162 based on Foata normal form. 13/5761 useless extension candidates. Maximal degree in co-relation 33134. Up to 5180 conditions per place. [2024-06-27 23:01:58,168 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 123 selfloop transitions, 27 changer transitions 0/165 dead transitions. [2024-06-27 23:01:58,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 165 transitions, 2384 flow [2024-06-27 23:01:58,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:01:58,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:01:58,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2024-06-27 23:01:58,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49612403100775193 [2024-06-27 23:01:58,170 INFO L175 Difference]: Start difference. First operand has 132 places, 154 transitions, 2040 flow. Second operand 6 states and 128 transitions. [2024-06-27 23:01:58,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 165 transitions, 2384 flow [2024-06-27 23:01:58,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 165 transitions, 2196 flow, removed 48 selfloop flow, removed 3 redundant places. [2024-06-27 23:01:58,277 INFO L231 Difference]: Finished difference. Result has 135 places, 154 transitions, 1912 flow [2024-06-27 23:01:58,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1852, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1912, PETRI_PLACES=135, PETRI_TRANSITIONS=154} [2024-06-27 23:01:58,278 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 91 predicate places. [2024-06-27 23:01:58,278 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 154 transitions, 1912 flow [2024-06-27 23:01:58,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 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) [2024-06-27 23:01:58,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:58,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:01:58,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 23:01:58,279 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)] === [2024-06-27 23:01:58,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:58,279 INFO L85 PathProgramCache]: Analyzing trace with hash -245466873, now seen corresponding path program 7 times [2024-06-27 23:01:58,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:58,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102087123] [2024-06-27 23:01:58,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:58,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:58,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:01:58,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:01:58,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:01:58,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102087123] [2024-06-27 23:01:58,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102087123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:01:58,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:01:58,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:01:58,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775216581] [2024-06-27 23:01:58,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:01:58,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:01:58,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:01:58,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:01:58,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:01:58,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-27 23:01:58,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 154 transitions, 1912 flow. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:58,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:01:58,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-27 23:01:58,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:01:59,597 INFO L124 PetriNetUnfolderBase]: 4338/7152 cut-off events. [2024-06-27 23:01:59,597 INFO L125 PetriNetUnfolderBase]: For 128207/128303 co-relation queries the response was YES. [2024-06-27 23:01:59,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41974 conditions, 7152 events. 4338/7152 cut-off events. For 128207/128303 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 48433 event pairs, 957 based on Foata normal form. 107/7205 useless extension candidates. Maximal degree in co-relation 41910. Up to 2687 conditions per place. [2024-06-27 23:01:59,646 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 117 selfloop transitions, 25 changer transitions 56/211 dead transitions. [2024-06-27 23:01:59,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 211 transitions, 2975 flow [2024-06-27 23:01:59,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:01:59,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:01:59,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 23:01:59,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.561046511627907 [2024-06-27 23:01:59,647 INFO L175 Difference]: Start difference. First operand has 135 places, 154 transitions, 1912 flow. Second operand 8 states and 193 transitions. [2024-06-27 23:01:59,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 211 transitions, 2975 flow [2024-06-27 23:01:59,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 211 transitions, 2809 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 23:01:59,784 INFO L231 Difference]: Finished difference. Result has 139 places, 124 transitions, 1442 flow [2024-06-27 23:01:59,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1746, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1442, PETRI_PLACES=139, PETRI_TRANSITIONS=124} [2024-06-27 23:01:59,784 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 95 predicate places. [2024-06-27 23:01:59,785 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 124 transitions, 1442 flow [2024-06-27 23:01:59,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:01:59,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:01:59,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:01:59,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 23:01:59,785 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)] === [2024-06-27 23:01:59,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:01:59,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1071187219, now seen corresponding path program 8 times [2024-06-27 23:01:59,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:01:59,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156082599] [2024-06-27 23:01:59,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:01:59,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:01:59,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:02:00,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:02:00,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:02:00,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156082599] [2024-06-27 23:02:00,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156082599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:02:00,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:02:00,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:02:00,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550050227] [2024-06-27 23:02:00,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:02:00,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:02:00,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:02:00,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:02:00,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:02:00,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-27 23:02:00,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 124 transitions, 1442 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:02:00,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:02:00,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-27 23:02:00,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:02:01,031 INFO L124 PetriNetUnfolderBase]: 3537/5767 cut-off events. [2024-06-27 23:02:01,032 INFO L125 PetriNetUnfolderBase]: For 125694/125694 co-relation queries the response was YES. [2024-06-27 23:02:01,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35967 conditions, 5767 events. 3537/5767 cut-off events. For 125694/125694 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 36857 event pairs, 712 based on Foata normal form. 75/5832 useless extension candidates. Maximal degree in co-relation 35901. Up to 4451 conditions per place. [2024-06-27 23:02:01,070 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 106 selfloop transitions, 26 changer transitions 36/175 dead transitions. [2024-06-27 23:02:01,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 175 transitions, 2144 flow [2024-06-27 23:02:01,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:02:01,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:02:01,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 193 transitions. [2024-06-27 23:02:01,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49870801033591733 [2024-06-27 23:02:01,071 INFO L175 Difference]: Start difference. First operand has 139 places, 124 transitions, 1442 flow. Second operand 9 states and 193 transitions. [2024-06-27 23:02:01,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 175 transitions, 2144 flow [2024-06-27 23:02:01,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 175 transitions, 1985 flow, removed 61 selfloop flow, removed 11 redundant places. [2024-06-27 23:02:01,216 INFO L231 Difference]: Finished difference. Result has 131 places, 116 transitions, 1309 flow [2024-06-27 23:02:01,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1312, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1309, PETRI_PLACES=131, PETRI_TRANSITIONS=116} [2024-06-27 23:02:01,217 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 87 predicate places. [2024-06-27 23:02:01,217 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 116 transitions, 1309 flow [2024-06-27 23:02:01,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:02:01,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:02:01,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:02:01,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 23:02:01,217 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)] === [2024-06-27 23:02:01,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:02:01,218 INFO L85 PathProgramCache]: Analyzing trace with hash -346705229, now seen corresponding path program 9 times [2024-06-27 23:02:01,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:02:01,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132143050] [2024-06-27 23:02:01,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:02:01,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:02:01,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:02:01,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:02:01,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:02:01,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132143050] [2024-06-27 23:02:01,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132143050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:02:01,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:02:01,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:02:01,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507788938] [2024-06-27 23:02:01,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:02:01,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:02:01,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:02:01,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:02:01,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:02:01,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-27 23:02:01,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 116 transitions, 1309 flow. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:02:01,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:02:01,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-27 23:02:01,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:02:02,295 INFO L124 PetriNetUnfolderBase]: 3164/5266 cut-off events. [2024-06-27 23:02:02,296 INFO L125 PetriNetUnfolderBase]: For 87519/87602 co-relation queries the response was YES. [2024-06-27 23:02:02,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29946 conditions, 5266 events. 3164/5266 cut-off events. For 87519/87602 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 34084 event pairs, 821 based on Foata normal form. 105/5341 useless extension candidates. Maximal degree in co-relation 29884. Up to 2072 conditions per place. [2024-06-27 23:02:02,331 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 64 selfloop transitions, 28 changer transitions 63/165 dead transitions. [2024-06-27 23:02:02,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 165 transitions, 2228 flow [2024-06-27 23:02:02,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:02:02,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:02:02,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 201 transitions. [2024-06-27 23:02:02,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5193798449612403 [2024-06-27 23:02:02,332 INFO L175 Difference]: Start difference. First operand has 131 places, 116 transitions, 1309 flow. Second operand 9 states and 201 transitions. [2024-06-27 23:02:02,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 165 transitions, 2228 flow [2024-06-27 23:02:02,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 165 transitions, 2116 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-27 23:02:02,401 INFO L231 Difference]: Finished difference. Result has 130 places, 76 transitions, 799 flow [2024-06-27 23:02:02,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1239, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=799, PETRI_PLACES=130, PETRI_TRANSITIONS=76} [2024-06-27 23:02:02,401 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 86 predicate places. [2024-06-27 23:02:02,402 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 76 transitions, 799 flow [2024-06-27 23:02:02,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:02:02,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:02:02,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:02:02,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 23:02:02,402 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)] === [2024-06-27 23:02:02,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:02:02,402 INFO L85 PathProgramCache]: Analyzing trace with hash 934740653, now seen corresponding path program 1 times [2024-06-27 23:02:02,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:02:02,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22866195] [2024-06-27 23:02:02,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:02:02,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:02:02,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:02:02,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:02:02,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:02:02,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22866195] [2024-06-27 23:02:02,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22866195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:02:02,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:02:02,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:02:02,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297276960] [2024-06-27 23:02:02,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:02:02,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:02:02,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:02:02,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:02:02,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:02:02,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-27 23:02:02,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 76 transitions, 799 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:02:02,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:02:02,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-27 23:02:02,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:02:03,169 INFO L124 PetriNetUnfolderBase]: 1756/2931 cut-off events. [2024-06-27 23:02:03,169 INFO L125 PetriNetUnfolderBase]: For 57708/57748 co-relation queries the response was YES. [2024-06-27 23:02:03,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17736 conditions, 2931 events. 1756/2931 cut-off events. For 57708/57748 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 16644 event pairs, 303 based on Foata normal form. 29/2945 useless extension candidates. Maximal degree in co-relation 17689. Up to 1939 conditions per place. [2024-06-27 23:02:03,190 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 70 selfloop transitions, 19 changer transitions 0/99 dead transitions. [2024-06-27 23:02:03,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 99 transitions, 1161 flow [2024-06-27 23:02:03,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:02:03,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:02:03,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-27 23:02:03,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5534883720930233 [2024-06-27 23:02:03,191 INFO L175 Difference]: Start difference. First operand has 130 places, 76 transitions, 799 flow. Second operand 5 states and 119 transitions. [2024-06-27 23:02:03,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 99 transitions, 1161 flow [2024-06-27 23:02:03,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 99 transitions, 953 flow, removed 58 selfloop flow, removed 21 redundant places. [2024-06-27 23:02:03,227 INFO L231 Difference]: Finished difference. Result has 97 places, 80 transitions, 733 flow [2024-06-27 23:02:03,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=733, PETRI_PLACES=97, PETRI_TRANSITIONS=80} [2024-06-27 23:02:03,228 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 53 predicate places. [2024-06-27 23:02:03,228 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 80 transitions, 733 flow [2024-06-27 23:02:03,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:02:03,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:02:03,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:02:03,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 23:02:03,228 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:02:03,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:02:03,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1901294833, now seen corresponding path program 1 times [2024-06-27 23:02:03,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:02:03,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159535806] [2024-06-27 23:02:03,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:02:03,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:02:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:02:03,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:02:03,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:02:03,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159535806] [2024-06-27 23:02:03,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159535806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:02:03,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:02:03,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:02:03,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175146646] [2024-06-27 23:02:03,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:02:03,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:02:03,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:02:03,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:02:03,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:02:03,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-27 23:02:03,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 80 transitions, 733 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:02:03,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:02:03,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-27 23:02:03,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:02:03,982 INFO L124 PetriNetUnfolderBase]: 1962/3287 cut-off events. [2024-06-27 23:02:03,982 INFO L125 PetriNetUnfolderBase]: For 36008/36048 co-relation queries the response was YES. [2024-06-27 23:02:03,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16541 conditions, 3287 events. 1962/3287 cut-off events. For 36008/36048 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 19433 event pairs, 345 based on Foata normal form. 79/3351 useless extension candidates. Maximal degree in co-relation 16508. Up to 1943 conditions per place. [2024-06-27 23:02:04,002 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 73 selfloop transitions, 15 changer transitions 11/109 dead transitions. [2024-06-27 23:02:04,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 109 transitions, 1101 flow [2024-06-27 23:02:04,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:02:04,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:02:04,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-27 23:02:04,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5503875968992248 [2024-06-27 23:02:04,013 INFO L175 Difference]: Start difference. First operand has 97 places, 80 transitions, 733 flow. Second operand 6 states and 142 transitions. [2024-06-27 23:02:04,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 109 transitions, 1101 flow [2024-06-27 23:02:04,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 109 transitions, 998 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-27 23:02:04,037 INFO L231 Difference]: Finished difference. Result has 97 places, 79 transitions, 668 flow [2024-06-27 23:02:04,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=668, PETRI_PLACES=97, PETRI_TRANSITIONS=79} [2024-06-27 23:02:04,038 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 53 predicate places. [2024-06-27 23:02:04,038 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 79 transitions, 668 flow [2024-06-27 23:02:04,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:02:04,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:02:04,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:02:04,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 23:02:04,038 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:02:04,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:02:04,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1901294616, now seen corresponding path program 1 times [2024-06-27 23:02:04,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:02:04,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974044377] [2024-06-27 23:02:04,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:02:04,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:02:04,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:02:04,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:02:04,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:02:04,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974044377] [2024-06-27 23:02:04,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974044377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:02:04,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:02:04,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:02:04,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294881152] [2024-06-27 23:02:04,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:02:04,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:02:04,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:02:04,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:02:04,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:02:04,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-27 23:02:04,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 79 transitions, 668 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:02:04,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:02:04,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-27 23:02:04,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:02:04,808 INFO L124 PetriNetUnfolderBase]: 1988/3353 cut-off events. [2024-06-27 23:02:04,808 INFO L125 PetriNetUnfolderBase]: For 30135/30175 co-relation queries the response was YES. [2024-06-27 23:02:04,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15669 conditions, 3353 events. 1988/3353 cut-off events. For 30135/30175 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 20177 event pairs, 445 based on Foata normal form. 95/3433 useless extension candidates. Maximal degree in co-relation 15638. Up to 1859 conditions per place. [2024-06-27 23:02:04,824 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 64 selfloop transitions, 7 changer transitions 32/113 dead transitions. [2024-06-27 23:02:04,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 113 transitions, 1096 flow [2024-06-27 23:02:04,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:02:04,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:02:04,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-27 23:02:04,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5581395348837209 [2024-06-27 23:02:04,825 INFO L175 Difference]: Start difference. First operand has 97 places, 79 transitions, 668 flow. Second operand 6 states and 144 transitions. [2024-06-27 23:02:04,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 113 transitions, 1096 flow [2024-06-27 23:02:04,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 113 transitions, 1064 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-27 23:02:04,842 INFO L231 Difference]: Finished difference. Result has 98 places, 67 transitions, 543 flow [2024-06-27 23:02:04,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=543, PETRI_PLACES=98, PETRI_TRANSITIONS=67} [2024-06-27 23:02:04,842 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 54 predicate places. [2024-06-27 23:02:04,842 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 67 transitions, 543 flow [2024-06-27 23:02:04,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:02:04,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:02:04,843 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] [2024-06-27 23:02:04,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 23:02:04,843 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:02:04,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:02:04,843 INFO L85 PathProgramCache]: Analyzing trace with hash 230100505, now seen corresponding path program 2 times [2024-06-27 23:02:04,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:02:04,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587768686] [2024-06-27 23:02:04,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:02:04,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:02:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:02:05,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:02:05,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:02:05,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587768686] [2024-06-27 23:02:05,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587768686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:02:05,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:02:05,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:02:05,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461566270] [2024-06-27 23:02:05,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:02:05,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:02:05,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:02:05,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:02:05,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:02:05,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-27 23:02:05,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 67 transitions, 543 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:02:05,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:02:05,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-27 23:02:05,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:02:05,433 INFO L124 PetriNetUnfolderBase]: 1376/2309 cut-off events. [2024-06-27 23:02:05,434 INFO L125 PetriNetUnfolderBase]: For 22927/22967 co-relation queries the response was YES. [2024-06-27 23:02:05,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11567 conditions, 2309 events. 1376/2309 cut-off events. For 22927/22967 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 12627 event pairs, 424 based on Foata normal form. 21/2318 useless extension candidates. Maximal degree in co-relation 11535. Up to 1808 conditions per place. [2024-06-27 23:02:05,446 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 60 selfloop transitions, 15 changer transitions 0/85 dead transitions. [2024-06-27 23:02:05,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 85 transitions, 777 flow [2024-06-27 23:02:05,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:02:05,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:02:05,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-06-27 23:02:05,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5077519379844961 [2024-06-27 23:02:05,447 INFO L175 Difference]: Start difference. First operand has 98 places, 67 transitions, 543 flow. Second operand 6 states and 131 transitions. [2024-06-27 23:02:05,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 85 transitions, 777 flow [2024-06-27 23:02:05,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 85 transitions, 693 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-27 23:02:05,460 INFO L231 Difference]: Finished difference. Result has 90 places, 67 transitions, 507 flow [2024-06-27 23:02:05,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=507, PETRI_PLACES=90, PETRI_TRANSITIONS=67} [2024-06-27 23:02:05,461 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 46 predicate places. [2024-06-27 23:02:05,461 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 67 transitions, 507 flow [2024-06-27 23:02:05,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:02:05,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:02:05,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:02:05,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 23:02:05,462 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:02:05,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:02:05,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1491720712, now seen corresponding path program 2 times [2024-06-27 23:02:05,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:02:05,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036518973] [2024-06-27 23:02:05,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:02:05,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:02:05,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:02:05,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:02:05,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:02:05,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036518973] [2024-06-27 23:02:05,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036518973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:02:05,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:02:05,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:02:05,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843003929] [2024-06-27 23:02:05,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:02:05,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:02:05,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:02:05,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:02:05,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:02:05,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-27 23:02:05,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 67 transitions, 507 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:02:05,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:02:05,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-27 23:02:05,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:02:06,176 INFO L124 PetriNetUnfolderBase]: 1635/2770 cut-off events. [2024-06-27 23:02:06,176 INFO L125 PetriNetUnfolderBase]: For 19292/19332 co-relation queries the response was YES. [2024-06-27 23:02:06,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11780 conditions, 2770 events. 1635/2770 cut-off events. For 19292/19332 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 16075 event pairs, 527 based on Foata normal form. 99/2857 useless extension candidates. Maximal degree in co-relation 11752. Up to 1769 conditions per place. [2024-06-27 23:02:06,188 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 60 selfloop transitions, 9 changer transitions 24/103 dead transitions. [2024-06-27 23:02:06,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 103 transitions, 907 flow [2024-06-27 23:02:06,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:02:06,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:02:06,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-27 23:02:06,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5282392026578073 [2024-06-27 23:02:06,189 INFO L175 Difference]: Start difference. First operand has 90 places, 67 transitions, 507 flow. Second operand 7 states and 159 transitions. [2024-06-27 23:02:06,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 103 transitions, 907 flow [2024-06-27 23:02:06,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 103 transitions, 873 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-27 23:02:06,197 INFO L231 Difference]: Finished difference. Result has 93 places, 63 transitions, 469 flow [2024-06-27 23:02:06,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=469, PETRI_PLACES=93, PETRI_TRANSITIONS=63} [2024-06-27 23:02:06,198 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 49 predicate places. [2024-06-27 23:02:06,198 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 63 transitions, 469 flow [2024-06-27 23:02:06,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:02:06,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:02:06,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:02:06,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 23:02:06,198 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:02:06,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:02:06,199 INFO L85 PathProgramCache]: Analyzing trace with hash 230457997, now seen corresponding path program 2 times [2024-06-27 23:02:06,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:02:06,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932827299] [2024-06-27 23:02:06,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:02:06,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:02:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:02:06,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:02:06,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:02:06,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932827299] [2024-06-27 23:02:06,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932827299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:02:06,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:02:06,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:02:06,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138476048] [2024-06-27 23:02:06,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:02:06,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:02:06,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:02:06,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:02:06,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:02:06,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-27 23:02:06,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 63 transitions, 469 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:02:06,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:02:06,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-27 23:02:06,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:02:06,883 INFO L124 PetriNetUnfolderBase]: 1401/2390 cut-off events. [2024-06-27 23:02:06,884 INFO L125 PetriNetUnfolderBase]: For 19709/19749 co-relation queries the response was YES. [2024-06-27 23:02:06,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10411 conditions, 2390 events. 1401/2390 cut-off events. For 19709/19749 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 13575 event pairs, 454 based on Foata normal form. 79/2457 useless extension candidates. Maximal degree in co-relation 10381. Up to 1500 conditions per place. [2024-06-27 23:02:06,897 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 56 selfloop transitions, 8 changer transitions 21/95 dead transitions. [2024-06-27 23:02:06,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 95 transitions, 787 flow [2024-06-27 23:02:06,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:02:06,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:02:06,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-27 23:02:06,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5149501661129569 [2024-06-27 23:02:06,900 INFO L175 Difference]: Start difference. First operand has 93 places, 63 transitions, 469 flow. Second operand 7 states and 155 transitions. [2024-06-27 23:02:06,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 95 transitions, 787 flow [2024-06-27 23:02:06,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 95 transitions, 749 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 23:02:06,912 INFO L231 Difference]: Finished difference. Result has 91 places, 61 transitions, 435 flow [2024-06-27 23:02:06,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=435, PETRI_PLACES=91, PETRI_TRANSITIONS=61} [2024-06-27 23:02:06,913 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 47 predicate places. [2024-06-27 23:02:06,913 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 61 transitions, 435 flow [2024-06-27 23:02:06,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:02:06,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:02:06,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:02:06,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 23:02:06,914 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:02:06,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:02:06,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1069835226, now seen corresponding path program 3 times [2024-06-27 23:02:06,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:02:06,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379112891] [2024-06-27 23:02:06,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:02:06,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:02:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:02:07,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:02:07,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:02:07,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379112891] [2024-06-27 23:02:07,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379112891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:02:07,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:02:07,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:02:07,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554625947] [2024-06-27 23:02:07,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:02:07,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:02:07,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:02:07,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:02:07,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:02:07,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-27 23:02:07,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 61 transitions, 435 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:02:07,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:02:07,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-27 23:02:07,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:02:07,500 INFO L124 PetriNetUnfolderBase]: 986/1743 cut-off events. [2024-06-27 23:02:07,501 INFO L125 PetriNetUnfolderBase]: For 13460/13500 co-relation queries the response was YES. [2024-06-27 23:02:07,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6956 conditions, 1743 events. 986/1743 cut-off events. For 13460/13500 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 9489 event pairs, 253 based on Foata normal form. 109/1836 useless extension candidates. Maximal degree in co-relation 6927. Up to 546 conditions per place. [2024-06-27 23:02:07,508 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 29 selfloop transitions, 3 changer transitions 59/99 dead transitions. [2024-06-27 23:02:07,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 99 transitions, 841 flow [2024-06-27 23:02:07,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:02:07,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:02:07,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-06-27 23:02:07,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5348837209302325 [2024-06-27 23:02:07,509 INFO L175 Difference]: Start difference. First operand has 91 places, 61 transitions, 435 flow. Second operand 7 states and 161 transitions. [2024-06-27 23:02:07,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 99 transitions, 841 flow [2024-06-27 23:02:07,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 99 transitions, 779 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 23:02:07,517 INFO L231 Difference]: Finished difference. Result has 89 places, 39 transitions, 236 flow [2024-06-27 23:02:07,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=236, PETRI_PLACES=89, PETRI_TRANSITIONS=39} [2024-06-27 23:02:07,517 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 45 predicate places. [2024-06-27 23:02:07,518 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 39 transitions, 236 flow [2024-06-27 23:02:07,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:02:07,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:02:07,518 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] [2024-06-27 23:02:07,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 23:02:07,518 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:02:07,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:02:07,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1456550123, now seen corresponding path program 1 times [2024-06-27 23:02:07,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:02:07,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550279176] [2024-06-27 23:02:07,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:02:07,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:02:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:02:07,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:02:07,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:02:07,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550279176] [2024-06-27 23:02:07,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550279176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:02:07,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:02:07,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:02:07,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867818948] [2024-06-27 23:02:07,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:02:07,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:02:07,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:02:07,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:02:07,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:02:07,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-27 23:02:07,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 39 transitions, 236 flow. Second operand has 8 states, 8 states have (on average 15.0) internal successors, (120), 8 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) [2024-06-27 23:02:07,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:02:07,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-27 23:02:07,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:02:08,216 INFO L124 PetriNetUnfolderBase]: 598/1077 cut-off events. [2024-06-27 23:02:08,216 INFO L125 PetriNetUnfolderBase]: For 8137/8137 co-relation queries the response was YES. [2024-06-27 23:02:08,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4058 conditions, 1077 events. 598/1077 cut-off events. For 8137/8137 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5817 event pairs, 299 based on Foata normal form. 40/1105 useless extension candidates. Maximal degree in co-relation 4030. Up to 362 conditions per place. [2024-06-27 23:02:08,221 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 36 selfloop transitions, 5 changer transitions 11/60 dead transitions. [2024-06-27 23:02:08,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 60 transitions, 444 flow [2024-06-27 23:02:08,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:02:08,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:02:08,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-06-27 23:02:08,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49224806201550386 [2024-06-27 23:02:08,221 INFO L175 Difference]: Start difference. First operand has 89 places, 39 transitions, 236 flow. Second operand 6 states and 127 transitions. [2024-06-27 23:02:08,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 60 transitions, 444 flow [2024-06-27 23:02:08,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 60 transitions, 339 flow, removed 39 selfloop flow, removed 17 redundant places. [2024-06-27 23:02:08,227 INFO L231 Difference]: Finished difference. Result has 68 places, 37 transitions, 170 flow [2024-06-27 23:02:08,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=170, PETRI_PLACES=68, PETRI_TRANSITIONS=37} [2024-06-27 23:02:08,228 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 24 predicate places. [2024-06-27 23:02:08,228 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 37 transitions, 170 flow [2024-06-27 23:02:08,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.0) internal successors, (120), 8 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) [2024-06-27 23:02:08,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:02:08,228 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] [2024-06-27 23:02:08,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 23:02:08,228 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)] === [2024-06-27 23:02:08,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:02:08,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1454136060, now seen corresponding path program 1 times [2024-06-27 23:02:08,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:02:08,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719075547] [2024-06-27 23:02:08,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:02:08,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:02:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:02:08,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:02:08,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:02:08,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719075547] [2024-06-27 23:02:08,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719075547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:02:08,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:02:08,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:02:08,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340652928] [2024-06-27 23:02:08,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:02:08,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:02:08,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:02:08,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:02:08,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:02:08,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-27 23:02:08,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 37 transitions, 170 flow. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:02:08,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:02:08,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-27 23:02:08,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:02:08,858 INFO L124 PetriNetUnfolderBase]: 278/535 cut-off events. [2024-06-27 23:02:08,859 INFO L125 PetriNetUnfolderBase]: For 1804/1804 co-relation queries the response was YES. [2024-06-27 23:02:08,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1310 conditions, 535 events. 278/535 cut-off events. For 1804/1804 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2505 event pairs, 73 based on Foata normal form. 80/609 useless extension candidates. Maximal degree in co-relation 1292. Up to 384 conditions per place. [2024-06-27 23:02:08,860 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 0 selfloop transitions, 0 changer transitions 45/45 dead transitions. [2024-06-27 23:02:08,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 45 transitions, 254 flow [2024-06-27 23:02:08,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:02:08,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:02:08,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-27 23:02:08,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39867109634551495 [2024-06-27 23:02:08,861 INFO L175 Difference]: Start difference. First operand has 68 places, 37 transitions, 170 flow. Second operand 7 states and 120 transitions. [2024-06-27 23:02:08,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 45 transitions, 254 flow [2024-06-27 23:02:08,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 45 transitions, 237 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-27 23:02:08,862 INFO L231 Difference]: Finished difference. Result has 66 places, 0 transitions, 0 flow [2024-06-27 23:02:08,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=66, PETRI_TRANSITIONS=0} [2024-06-27 23:02:08,862 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 22 predicate places. [2024-06-27 23:02:08,862 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 0 transitions, 0 flow [2024-06-27 23:02:08,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:02:08,864 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining) [2024-06-27 23:02:08,865 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 6 remaining) [2024-06-27 23:02:08,865 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 6 remaining) [2024-06-27 23:02:08,865 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-06-27 23:02:08,865 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-06-27 23:02:08,865 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-06-27 23:02:08,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 23:02:08,866 INFO L445 BasicCegarLoop]: Path program histogram: [9, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:02:08,868 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 23:02:08,868 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 23:02:08,871 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-27 23:02:08,871 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-27 23:02:08,871 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 11:02:08 BasicIcfg [2024-06-27 23:02:08,871 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 23:02:08,872 INFO L158 Benchmark]: Toolchain (without parser) took 32879.35ms. Allocated memory was 169.9MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 141.5MB in the beginning and 1.0GB in the end (delta: -874.2MB). Peak memory consumption was 649.3MB. Max. memory is 16.1GB. [2024-06-27 23:02:08,872 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 134.2MB. Free memory is still 85.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 23:02:08,872 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 134.2MB. Free memory was 106.5MB in the beginning and 106.5MB in the end (delta: 15.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 23:02:08,872 INFO L158 Benchmark]: CACSL2BoogieTranslator took 521.71ms. Allocated memory is still 169.9MB. Free memory was 141.5MB in the beginning and 108.0MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-06-27 23:02:08,872 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.87ms. Allocated memory is still 169.9MB. Free memory was 108.0MB in the beginning and 103.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 23:02:08,873 INFO L158 Benchmark]: Boogie Preprocessor took 87.16ms. Allocated memory is still 169.9MB. Free memory was 103.8MB in the beginning and 98.5MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-06-27 23:02:08,873 INFO L158 Benchmark]: RCFGBuilder took 707.88ms. Allocated memory is still 169.9MB. Free memory was 98.5MB in the beginning and 101.8MB in the end (delta: -3.3MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2024-06-27 23:02:08,873 INFO L158 Benchmark]: TraceAbstraction took 31496.59ms. Allocated memory was 169.9MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 100.8MB in the beginning and 1.0GB in the end (delta: -914.9MB). Peak memory consumption was 607.6MB. Max. memory is 16.1GB. [2024-06-27 23:02:08,874 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 134.2MB. Free memory is still 85.9MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.14ms. Allocated memory is still 134.2MB. Free memory was 106.5MB in the beginning and 106.5MB in the end (delta: 15.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 521.71ms. Allocated memory is still 169.9MB. Free memory was 141.5MB in the beginning and 108.0MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.87ms. Allocated memory is still 169.9MB. Free memory was 108.0MB in the beginning and 103.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 87.16ms. Allocated memory is still 169.9MB. Free memory was 103.8MB in the beginning and 98.5MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 707.88ms. Allocated memory is still 169.9MB. Free memory was 98.5MB in the beginning and 101.8MB in the end (delta: -3.3MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. * TraceAbstraction took 31496.59ms. Allocated memory was 169.9MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 100.8MB in the beginning and 1.0GB in the end (delta: -914.9MB). Peak memory consumption was 607.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 871]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 873]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 874]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 71 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 31.4s, OverallIterations: 36, TraceHistogramMax: 1, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 21.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1239 SdHoareTripleChecker+Valid, 5.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1028 mSDsluCounter, 266 SdHoareTripleChecker+Invalid, 4.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 138 mSDsCounter, 617 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6697 IncrementalHoareTripleChecker+Invalid, 7314 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 617 mSolverCounterUnsat, 128 mSDtfsCounter, 6697 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 202 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2040occurred in iteration=23, InterpolantAutomatonStates: 223, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 9.0s InterpolantComputationTime, 617 NumberOfCodeBlocks, 617 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 581 ConstructedInterpolants, 0 QuantifiedInterpolants, 10291 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 36 InterpolantComputations, 36 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-27 23:02:08,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE