./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix009.opt.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/protection/mix009.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f 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/mix009.opt.i ./goblint.2024-06-19_11-23-25.files/protection/mix009.opt.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-eb4cb34-m [2024-06-21 16:17:17,635 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 16:17:17,707 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 16:17:17,711 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 16:17:17,712 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 16:17:17,733 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 16:17:17,734 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 16:17:17,734 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 16:17:17,735 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 16:17:17,738 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 16:17:17,738 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 16:17:17,738 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 16:17:17,738 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 16:17:17,739 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 16:17:17,739 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 16:17:17,740 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 16:17:17,740 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 16:17:17,740 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 16:17:17,740 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 16:17:17,740 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 16:17:17,741 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 16:17:17,741 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 16:17:17,741 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 16:17:17,741 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 16:17:17,741 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 16:17:17,742 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 16:17:17,742 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 16:17:17,742 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 16:17:17,742 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 16:17:17,743 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 16:17:17,743 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 16:17:17,743 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 16:17:17,744 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 16:17:17,744 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 16:17:17,744 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 16:17:17,744 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 16:17:17,744 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 16:17:17,744 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 16:17:17,745 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 16:17:17,745 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 16:17:17,745 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 16:17:17,745 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 16:17:17,745 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 16:17:17,745 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 16:17:17,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 16:17:17,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 16:17:17,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 16:17:17,963 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 16:17:17,964 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 16:17:17,965 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix009.opt.i [2024-06-21 16:17:19,029 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 16:17:19,212 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 16:17:19,213 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix009.opt.i [2024-06-21 16:17:19,224 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e68e8564c/dfb538a8a27e499592d67aefd5cfb413/FLAG7fc055250 [2024-06-21 16:17:19,233 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e68e8564c/dfb538a8a27e499592d67aefd5cfb413 [2024-06-21 16:17:19,235 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 16:17:19,235 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 16:17:19,236 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix009.opt.yml/witness.yml [2024-06-21 16:17:19,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 16:17:19,337 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 16:17:19,338 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 16:17:19,338 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 16:17:19,342 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 16:17:19,342 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 04:17:19" (1/2) ... [2024-06-21 16:17:19,343 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79259c2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:17:19, skipping insertion in model container [2024-06-21 16:17:19,351 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 04:17:19" (1/2) ... [2024-06-21 16:17:19,353 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7b902fbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:17:19, skipping insertion in model container [2024-06-21 16:17:19,354 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 04:17:19" (2/2) ... [2024-06-21 16:17:19,354 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79259c2f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:17:19, skipping insertion in model container [2024-06-21 16:17:19,354 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 04:17:19" (2/2) ... [2024-06-21 16:17:19,355 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 16:17:19,414 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 16:17:19,416 INFO L97 edCorrectnessWitness]: Location invariant before [L834-L834] (((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) [2024-06-21 16:17:19,416 INFO L97 edCorrectnessWitness]: Location invariant before [L835-L835] (((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) [2024-06-21 16:17:19,416 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 16:17:19,416 INFO L106 edCorrectnessWitness]: ghost_update [L832-L832] multithreaded = 1; [2024-06-21 16:17:19,452 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 16:17:19,742 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 16:17:19,750 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 16:17:19,948 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 16:17:19,979 INFO L206 MainTranslator]: Completed translation [2024-06-21 16:17:19,979 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:17:19 WrapperNode [2024-06-21 16:17:19,979 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 16:17:19,981 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 16:17:19,981 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 16:17:19,981 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 16:17:19,986 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 21.06 04:17:19" (1/1) ... [2024-06-21 16:17:19,998 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 21.06 04:17:19" (1/1) ... [2024-06-21 16:17:20,037 INFO L138 Inliner]: procedures = 174, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 138 [2024-06-21 16:17:20,037 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 16:17:20,038 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 16:17:20,038 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 16:17:20,038 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 16:17:20,046 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:17:19" (1/1) ... [2024-06-21 16:17:20,046 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:17:19" (1/1) ... [2024-06-21 16:17:20,049 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:17:19" (1/1) ... [2024-06-21 16:17:20,067 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]. [2024-06-21 16:17:20,067 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:17:19" (1/1) ... [2024-06-21 16:17:20,067 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:17:19" (1/1) ... [2024-06-21 16:17:20,080 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:17:19" (1/1) ... [2024-06-21 16:17:20,082 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:17:19" (1/1) ... [2024-06-21 16:17:20,083 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:17:19" (1/1) ... [2024-06-21 16:17:20,084 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:17:19" (1/1) ... [2024-06-21 16:17:20,086 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 16:17:20,087 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 16:17:20,087 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 16:17:20,087 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 16:17:20,088 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:17:19" (1/1) ... [2024-06-21 16:17:20,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 16:17:20,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 16:17:20,108 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) [2024-06-21 16:17:20,132 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 [2024-06-21 16:17:20,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 16:17:20,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 16:17:20,159 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 16:17:20,159 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 16:17:20,160 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 16:17:20,160 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 16:17:20,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 16:17:20,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 16:17:20,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 16:17:20,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 16:17:20,161 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 16:17:20,284 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 16:17:20,285 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 16:17:20,527 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 16:17:20,527 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 16:17:20,690 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 16:17:20,690 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 16:17:20,692 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 04:17:20 BoogieIcfgContainer [2024-06-21 16:17:20,692 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 16:17:20,694 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 16:17:20,695 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 16:17:20,697 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 16:17:20,697 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 04:17:19" (1/4) ... [2024-06-21 16:17:20,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ebef271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 04:17:20, skipping insertion in model container [2024-06-21 16:17:20,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 04:17:19" (2/4) ... [2024-06-21 16:17:20,703 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ebef271 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 04:17:20, skipping insertion in model container [2024-06-21 16:17:20,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:17:19" (3/4) ... [2024-06-21 16:17:20,703 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ebef271 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 04:17:20, skipping insertion in model container [2024-06-21 16:17:20,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 04:17:20" (4/4) ... [2024-06-21 16:17:20,704 INFO L112 eAbstractionObserver]: Analyzing ICFG mix009.opt.i [2024-06-21 16:17:20,717 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 16:17:20,718 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-21 16:17:20,718 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 16:17:20,790 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 16:17:20,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-21 16:17:20,840 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-21 16:17:20,841 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 16:17:20,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 47 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-21 16:17:20,842 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-21 16:17:20,845 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-21 16:17:20,856 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 16:17:20,861 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;@6a6f08fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 16:17:20,861 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-21 16:17:20,863 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 16:17:20,863 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-21 16:17:20,864 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 16:17:20,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:20,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 16:17:20,865 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:17:20,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:20,868 INFO L85 PathProgramCache]: Analyzing trace with hash 364831899, now seen corresponding path program 1 times [2024-06-21 16:17:20,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:20,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289546364] [2024-06-21 16:17:20,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:20,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:21,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:21,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:21,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289546364] [2024-06-21 16:17:21,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289546364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:21,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:21,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 16:17:21,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026656198] [2024-06-21 16:17:21,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:21,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 16:17:21,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:21,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 16:17:21,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 16:17:21,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-06-21 16:17:21,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:21,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:21,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-06-21 16:17:21,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:21,769 INFO L124 PetriNetUnfolderBase]: 162/316 cut-off events. [2024-06-21 16:17:21,769 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-21 16:17:21,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 316 events. 162/316 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1286 event pairs, 97 based on Foata normal form. 1/303 useless extension candidates. Maximal degree in co-relation 616. Up to 288 conditions per place. [2024-06-21 16:17:21,774 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 21 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-21 16:17:21,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 117 flow [2024-06-21 16:17:21,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 16:17:21,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 16:17:21,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-06-21 16:17:21,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2024-06-21 16:17:21,785 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 59 transitions. [2024-06-21 16:17:21,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 117 flow [2024-06-21 16:17:21,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-21 16:17:21,788 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-21 16:17:21,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-21 16:17:21,793 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-21 16:17:21,793 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-21 16:17:21,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:21,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:21,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:21,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 16:17:21,794 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:17:21,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:21,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1583835590, now seen corresponding path program 1 times [2024-06-21 16:17:21,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:21,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767467001] [2024-06-21 16:17:21,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:21,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:21,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:22,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:22,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:22,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767467001] [2024-06-21 16:17:22,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767467001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:22,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:22,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 16:17:22,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428730192] [2024-06-21 16:17:22,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:22,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 16:17:22,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:22,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 16:17:22,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-21 16:17:22,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-06-21 16:17:22,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:22,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:22,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-06-21 16:17:22,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:22,434 INFO L124 PetriNetUnfolderBase]: 186/346 cut-off events. [2024-06-21 16:17:22,435 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-06-21 16:17:22,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 788 conditions, 346 events. 186/346 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1381 event pairs, 94 based on Foata normal form. 2/345 useless extension candidates. Maximal degree in co-relation 776. Up to 319 conditions per place. [2024-06-21 16:17:22,437 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 26 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-21 16:17:22,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 161 flow [2024-06-21 16:17:22,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 16:17:22,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 16:17:22,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2024-06-21 16:17:22,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5703125 [2024-06-21 16:17:22,438 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 73 transitions. [2024-06-21 16:17:22,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 161 flow [2024-06-21 16:17:22,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 16:17:22,440 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-21 16:17:22,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-21 16:17:22,440 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-21 16:17:22,440 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-21 16:17:22,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:22,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:22,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:22,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 16:17:22,441 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:17:22,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:22,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1854262106, now seen corresponding path program 1 times [2024-06-21 16:17:22,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:22,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52004748] [2024-06-21 16:17:22,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:22,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:22,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:22,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:22,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:22,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52004748] [2024-06-21 16:17:22,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52004748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:22,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:22,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 16:17:22,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009142247] [2024-06-21 16:17:22,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:22,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 16:17:22,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:22,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 16:17:22,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-21 16:17:22,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 16:17:22,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:22,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:22,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 16:17:22,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:23,001 INFO L124 PetriNetUnfolderBase]: 219/397 cut-off events. [2024-06-21 16:17:23,002 INFO L125 PetriNetUnfolderBase]: For 228/228 co-relation queries the response was YES. [2024-06-21 16:17:23,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1003 conditions, 397 events. 219/397 cut-off events. For 228/228 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1503 event pairs, 99 based on Foata normal form. 2/396 useless extension candidates. Maximal degree in co-relation 989. Up to 366 conditions per place. [2024-06-21 16:17:23,005 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 31 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-06-21 16:17:23,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 42 transitions, 211 flow [2024-06-21 16:17:23,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 16:17:23,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 16:17:23,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2024-06-21 16:17:23,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-21 16:17:23,009 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 85 transitions. [2024-06-21 16:17:23,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 42 transitions, 211 flow [2024-06-21 16:17:23,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 202 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-21 16:17:23,012 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 121 flow [2024-06-21 16:17:23,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-06-21 16:17:23,013 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-21 16:17:23,014 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 121 flow [2024-06-21 16:17:23,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:23,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:23,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:23,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 16:17:23,014 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:17:23,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:23,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1592138219, now seen corresponding path program 1 times [2024-06-21 16:17:23,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:23,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234678565] [2024-06-21 16:17:23,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:23,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:23,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:23,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:23,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234678565] [2024-06-21 16:17:23,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234678565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:23,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:23,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 16:17:23,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23758617] [2024-06-21 16:17:23,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:23,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 16:17:23,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:23,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 16:17:23,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-21 16:17:23,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 16:17:23,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 121 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:23,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:23,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 16:17:23,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:23,731 INFO L124 PetriNetUnfolderBase]: 213/387 cut-off events. [2024-06-21 16:17:23,732 INFO L125 PetriNetUnfolderBase]: For 386/386 co-relation queries the response was YES. [2024-06-21 16:17:23,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1063 conditions, 387 events. 213/387 cut-off events. For 386/386 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1454 event pairs, 57 based on Foata normal form. 4/389 useless extension candidates. Maximal degree in co-relation 1048. Up to 338 conditions per place. [2024-06-21 16:17:23,734 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 36 selfloop transitions, 9 changer transitions 0/49 dead transitions. [2024-06-21 16:17:23,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 49 transitions, 263 flow [2024-06-21 16:17:23,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:17:23,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:17:23,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-06-21 16:17:23,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5260416666666666 [2024-06-21 16:17:23,737 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 121 flow. Second operand 6 states and 101 transitions. [2024-06-21 16:17:23,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 49 transitions, 263 flow [2024-06-21 16:17:23,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 49 transitions, 248 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-21 16:17:23,739 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 145 flow [2024-06-21 16:17:23,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=145, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2024-06-21 16:17:23,739 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2024-06-21 16:17:23,740 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 145 flow [2024-06-21 16:17:23,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:23,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:23,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:23,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 16:17:23,740 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:17:23,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:23,741 INFO L85 PathProgramCache]: Analyzing trace with hash 22408742, now seen corresponding path program 1 times [2024-06-21 16:17:23,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:23,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467488765] [2024-06-21 16:17:23,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:23,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:23,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:24,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:24,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:24,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467488765] [2024-06-21 16:17:24,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467488765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:24,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:24,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 16:17:24,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405872508] [2024-06-21 16:17:24,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:24,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 16:17:24,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:24,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 16:17:24,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 16:17:24,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 16:17:24,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 145 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:24,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:24,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 16:17:24,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:24,370 INFO L124 PetriNetUnfolderBase]: 165/333 cut-off events. [2024-06-21 16:17:24,370 INFO L125 PetriNetUnfolderBase]: For 475/475 co-relation queries the response was YES. [2024-06-21 16:17:24,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 963 conditions, 333 events. 165/333 cut-off events. For 475/475 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1320 event pairs, 61 based on Foata normal form. 1/332 useless extension candidates. Maximal degree in co-relation 946. Up to 291 conditions per place. [2024-06-21 16:17:24,371 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 27 selfloop transitions, 6 changer transitions 0/39 dead transitions. [2024-06-21 16:17:24,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 39 transitions, 229 flow [2024-06-21 16:17:24,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 16:17:24,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 16:17:24,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2024-06-21 16:17:24,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-06-21 16:17:24,374 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 145 flow. Second operand 5 states and 74 transitions. [2024-06-21 16:17:24,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 39 transitions, 229 flow [2024-06-21 16:17:24,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 39 transitions, 208 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-21 16:17:24,378 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 151 flow [2024-06-21 16:17:24,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=151, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2024-06-21 16:17:24,380 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 11 predicate places. [2024-06-21 16:17:24,381 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 151 flow [2024-06-21 16:17:24,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:24,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:24,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:24,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 16:17:24,388 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:17:24,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:24,388 INFO L85 PathProgramCache]: Analyzing trace with hash 694672028, now seen corresponding path program 1 times [2024-06-21 16:17:24,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:24,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192400952] [2024-06-21 16:17:24,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:24,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:24,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:25,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:25,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:25,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192400952] [2024-06-21 16:17:25,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192400952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:25,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:25,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:17:25,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023775113] [2024-06-21 16:17:25,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:25,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:17:25,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:25,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:17:25,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:17:25,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 16:17:25,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 151 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:25,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:25,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 16:17:25,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:25,354 INFO L124 PetriNetUnfolderBase]: 161/327 cut-off events. [2024-06-21 16:17:25,354 INFO L125 PetriNetUnfolderBase]: For 594/594 co-relation queries the response was YES. [2024-06-21 16:17:25,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983 conditions, 327 events. 161/327 cut-off events. For 594/594 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1279 event pairs, 59 based on Foata normal form. 2/327 useless extension candidates. Maximal degree in co-relation 964. Up to 279 conditions per place. [2024-06-21 16:17:25,356 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 29 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2024-06-21 16:17:25,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 43 transitions, 249 flow [2024-06-21 16:17:25,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:17:25,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:17:25,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2024-06-21 16:17:25,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-06-21 16:17:25,357 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 151 flow. Second operand 6 states and 87 transitions. [2024-06-21 16:17:25,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 43 transitions, 249 flow [2024-06-21 16:17:25,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 43 transitions, 238 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-21 16:17:25,359 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 173 flow [2024-06-21 16:17:25,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=173, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2024-06-21 16:17:25,359 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2024-06-21 16:17:25,360 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 173 flow [2024-06-21 16:17:25,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:25,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:25,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:25,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 16:17:25,360 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:17:25,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:25,361 INFO L85 PathProgramCache]: Analyzing trace with hash 459579635, now seen corresponding path program 1 times [2024-06-21 16:17:25,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:25,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427088304] [2024-06-21 16:17:25,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:25,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:25,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:25,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:25,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:25,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427088304] [2024-06-21 16:17:25,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427088304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:25,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:25,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:17:25,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472483964] [2024-06-21 16:17:25,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:25,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:17:25,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:25,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:17:25,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:17:26,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 16:17:26,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 173 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:26,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:26,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 16:17:26,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:26,193 INFO L124 PetriNetUnfolderBase]: 192/364 cut-off events. [2024-06-21 16:17:26,193 INFO L125 PetriNetUnfolderBase]: For 884/884 co-relation queries the response was YES. [2024-06-21 16:17:26,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1198 conditions, 364 events. 192/364 cut-off events. For 884/884 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1388 event pairs, 70 based on Foata normal form. 1/363 useless extension candidates. Maximal degree in co-relation 1178. Up to 328 conditions per place. [2024-06-21 16:17:26,196 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 34 selfloop transitions, 8 changer transitions 0/47 dead transitions. [2024-06-21 16:17:26,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 47 transitions, 287 flow [2024-06-21 16:17:26,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:17:26,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:17:26,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-06-21 16:17:26,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-21 16:17:26,197 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 173 flow. Second operand 6 states and 84 transitions. [2024-06-21 16:17:26,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 47 transitions, 287 flow [2024-06-21 16:17:26,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 47 transitions, 270 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-21 16:17:26,199 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 189 flow [2024-06-21 16:17:26,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=189, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2024-06-21 16:17:26,199 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 16 predicate places. [2024-06-21 16:17:26,199 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 189 flow [2024-06-21 16:17:26,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:26,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:26,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:26,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 16:17:26,200 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:17:26,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:26,200 INFO L85 PathProgramCache]: Analyzing trace with hash 59987525, now seen corresponding path program 2 times [2024-06-21 16:17:26,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:26,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621388386] [2024-06-21 16:17:26,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:26,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:26,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:26,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:26,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:26,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621388386] [2024-06-21 16:17:26,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621388386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:26,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:26,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:17:26,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659272412] [2024-06-21 16:17:26,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:26,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:17:26,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:26,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:17:26,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:17:26,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 16:17:26,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 189 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:26,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:26,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 16:17:26,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:26,950 INFO L124 PetriNetUnfolderBase]: 190/362 cut-off events. [2024-06-21 16:17:26,950 INFO L125 PetriNetUnfolderBase]: For 1154/1160 co-relation queries the response was YES. [2024-06-21 16:17:26,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1252 conditions, 362 events. 190/362 cut-off events. For 1154/1160 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1391 event pairs, 74 based on Foata normal form. 5/364 useless extension candidates. Maximal degree in co-relation 1231. Up to 319 conditions per place. [2024-06-21 16:17:26,952 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 30 selfloop transitions, 11 changer transitions 0/46 dead transitions. [2024-06-21 16:17:26,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 46 transitions, 297 flow [2024-06-21 16:17:26,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:17:26,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:17:26,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 83 transitions. [2024-06-21 16:17:26,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4322916666666667 [2024-06-21 16:17:26,953 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 189 flow. Second operand 6 states and 83 transitions. [2024-06-21 16:17:26,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 46 transitions, 297 flow [2024-06-21 16:17:26,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 280 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-21 16:17:26,954 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 215 flow [2024-06-21 16:17:26,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=215, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2024-06-21 16:17:26,955 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2024-06-21 16:17:26,955 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 215 flow [2024-06-21 16:17:26,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:26,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:26,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:26,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 16:17:26,955 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:17:26,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:26,956 INFO L85 PathProgramCache]: Analyzing trace with hash 501071554, now seen corresponding path program 1 times [2024-06-21 16:17:26,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:26,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926347067] [2024-06-21 16:17:26,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:26,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:26,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:27,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:27,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:27,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926347067] [2024-06-21 16:17:27,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926347067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:27,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:27,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:17:27,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636493778] [2024-06-21 16:17:27,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:27,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:17:27,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:27,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:17:27,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:17:27,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 16:17:27,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 215 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:27,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:27,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 16:17:27,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:27,895 INFO L124 PetriNetUnfolderBase]: 202/369 cut-off events. [2024-06-21 16:17:27,895 INFO L125 PetriNetUnfolderBase]: For 1398/1398 co-relation queries the response was YES. [2024-06-21 16:17:27,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1334 conditions, 369 events. 202/369 cut-off events. For 1398/1398 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1334 event pairs, 30 based on Foata normal form. 4/371 useless extension candidates. Maximal degree in co-relation 1313. Up to 302 conditions per place. [2024-06-21 16:17:27,919 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 47 selfloop transitions, 12 changer transitions 0/63 dead transitions. [2024-06-21 16:17:27,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 63 transitions, 383 flow [2024-06-21 16:17:27,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:17:27,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:17:27,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 125 transitions. [2024-06-21 16:17:27,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48828125 [2024-06-21 16:17:27,920 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 215 flow. Second operand 8 states and 125 transitions. [2024-06-21 16:17:27,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 63 transitions, 383 flow [2024-06-21 16:17:27,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 63 transitions, 356 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-21 16:17:27,921 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 217 flow [2024-06-21 16:17:27,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=217, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2024-06-21 16:17:27,922 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 22 predicate places. [2024-06-21 16:17:27,922 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 217 flow [2024-06-21 16:17:27,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:27,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:27,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:27,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 16:17:27,922 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:17:27,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:27,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1361888085, now seen corresponding path program 1 times [2024-06-21 16:17:27,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:27,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384068307] [2024-06-21 16:17:27,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:27,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:27,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:28,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:28,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:28,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384068307] [2024-06-21 16:17:28,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384068307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:28,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:28,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:17:28,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154318757] [2024-06-21 16:17:28,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:28,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:17:28,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:28,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:17:28,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:17:28,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:17:28,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 217 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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) [2024-06-21 16:17:28,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:28,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:17:28,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:28,769 INFO L124 PetriNetUnfolderBase]: 205/374 cut-off events. [2024-06-21 16:17:28,769 INFO L125 PetriNetUnfolderBase]: For 1707/1707 co-relation queries the response was YES. [2024-06-21 16:17:28,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1432 conditions, 374 events. 205/374 cut-off events. For 1707/1707 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1356 event pairs, 47 based on Foata normal form. 1/373 useless extension candidates. Maximal degree in co-relation 1409. Up to 340 conditions per place. [2024-06-21 16:17:28,771 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 43 selfloop transitions, 10 changer transitions 0/56 dead transitions. [2024-06-21 16:17:28,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 56 transitions, 367 flow [2024-06-21 16:17:28,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:17:28,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:17:28,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-21 16:17:28,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 16:17:28,772 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 217 flow. Second operand 7 states and 91 transitions. [2024-06-21 16:17:28,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 56 transitions, 367 flow [2024-06-21 16:17:28,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 56 transitions, 339 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-21 16:17:28,777 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 230 flow [2024-06-21 16:17:28,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=230, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2024-06-21 16:17:28,778 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2024-06-21 16:17:28,779 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 230 flow [2024-06-21 16:17:28,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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) [2024-06-21 16:17:28,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:28,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:28,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 16:17:28,780 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:17:28,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:28,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1362067575, now seen corresponding path program 2 times [2024-06-21 16:17:28,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:28,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095521723] [2024-06-21 16:17:28,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:28,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:28,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:29,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:29,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:29,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095521723] [2024-06-21 16:17:29,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095521723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:29,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:29,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:17:29,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598550416] [2024-06-21 16:17:29,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:29,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:17:29,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:29,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:17:29,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:17:29,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:17:29,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 230 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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) [2024-06-21 16:17:29,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:29,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:17:29,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:29,614 INFO L124 PetriNetUnfolderBase]: 208/379 cut-off events. [2024-06-21 16:17:29,614 INFO L125 PetriNetUnfolderBase]: For 2086/2086 co-relation queries the response was YES. [2024-06-21 16:17:29,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1510 conditions, 379 events. 208/379 cut-off events. For 2086/2086 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1390 event pairs, 47 based on Foata normal form. 1/378 useless extension candidates. Maximal degree in co-relation 1485. Up to 339 conditions per place. [2024-06-21 16:17:29,616 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 39 selfloop transitions, 13 changer transitions 0/55 dead transitions. [2024-06-21 16:17:29,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 55 transitions, 374 flow [2024-06-21 16:17:29,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:17:29,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:17:29,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-06-21 16:17:29,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017857142857143 [2024-06-21 16:17:29,617 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 230 flow. Second operand 7 states and 90 transitions. [2024-06-21 16:17:29,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 55 transitions, 374 flow [2024-06-21 16:17:29,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 55 transitions, 349 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-21 16:17:29,619 INFO L231 Difference]: Finished difference. Result has 57 places, 45 transitions, 256 flow [2024-06-21 16:17:29,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=256, PETRI_PLACES=57, PETRI_TRANSITIONS=45} [2024-06-21 16:17:29,620 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 26 predicate places. [2024-06-21 16:17:29,620 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 256 flow [2024-06-21 16:17:29,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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) [2024-06-21 16:17:29,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:29,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:29,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 16:17:29,620 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:17:29,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:29,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1623438941, now seen corresponding path program 1 times [2024-06-21 16:17:29,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:29,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310720068] [2024-06-21 16:17:29,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:29,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:29,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:30,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:30,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:30,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310720068] [2024-06-21 16:17:30,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310720068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:30,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:30,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:17:30,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286923667] [2024-06-21 16:17:30,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:30,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:17:30,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:30,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:17:30,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:17:30,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 16:17:30,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 256 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:30,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:30,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 16:17:30,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:30,589 INFO L124 PetriNetUnfolderBase]: 197/370 cut-off events. [2024-06-21 16:17:30,589 INFO L125 PetriNetUnfolderBase]: For 2505/2505 co-relation queries the response was YES. [2024-06-21 16:17:30,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1521 conditions, 370 events. 197/370 cut-off events. For 2505/2505 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1401 event pairs, 46 based on Foata normal form. 1/369 useless extension candidates. Maximal degree in co-relation 1495. Up to 325 conditions per place. [2024-06-21 16:17:30,591 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 40 selfloop transitions, 10 changer transitions 0/57 dead transitions. [2024-06-21 16:17:30,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 57 transitions, 390 flow [2024-06-21 16:17:30,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:17:30,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:17:30,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2024-06-21 16:17:30,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41964285714285715 [2024-06-21 16:17:30,592 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 256 flow. Second operand 7 states and 94 transitions. [2024-06-21 16:17:30,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 57 transitions, 390 flow [2024-06-21 16:17:30,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 57 transitions, 355 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-21 16:17:30,595 INFO L231 Difference]: Finished difference. Result has 59 places, 47 transitions, 260 flow [2024-06-21 16:17:30,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=260, PETRI_PLACES=59, PETRI_TRANSITIONS=47} [2024-06-21 16:17:30,595 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 28 predicate places. [2024-06-21 16:17:30,596 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 260 flow [2024-06-21 16:17:30,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:30,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:30,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:30,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 16:17:30,596 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:17:30,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:30,596 INFO L85 PathProgramCache]: Analyzing trace with hash 137702471, now seen corresponding path program 3 times [2024-06-21 16:17:30,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:30,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431661340] [2024-06-21 16:17:30,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:30,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:30,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:31,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:31,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:31,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431661340] [2024-06-21 16:17:31,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431661340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:31,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:31,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:17:31,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347331674] [2024-06-21 16:17:31,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:31,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:17:31,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:31,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:17:31,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:17:31,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:17:31,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 260 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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) [2024-06-21 16:17:31,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:31,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:17:31,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:31,375 INFO L124 PetriNetUnfolderBase]: 209/382 cut-off events. [2024-06-21 16:17:31,375 INFO L125 PetriNetUnfolderBase]: For 2900/2903 co-relation queries the response was YES. [2024-06-21 16:17:31,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1634 conditions, 382 events. 209/382 cut-off events. For 2900/2903 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1405 event pairs, 54 based on Foata normal form. 1/380 useless extension candidates. Maximal degree in co-relation 1607. Up to 332 conditions per place. [2024-06-21 16:17:31,378 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 36 selfloop transitions, 17 changer transitions 0/56 dead transitions. [2024-06-21 16:17:31,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 56 transitions, 402 flow [2024-06-21 16:17:31,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:17:31,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:17:31,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-21 16:17:31,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39732142857142855 [2024-06-21 16:17:31,379 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 260 flow. Second operand 7 states and 89 transitions. [2024-06-21 16:17:31,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 56 transitions, 402 flow [2024-06-21 16:17:31,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 56 transitions, 379 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-21 16:17:31,382 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 300 flow [2024-06-21 16:17:31,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=300, PETRI_PLACES=61, PETRI_TRANSITIONS=49} [2024-06-21 16:17:31,382 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 30 predicate places. [2024-06-21 16:17:31,382 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 300 flow [2024-06-21 16:17:31,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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) [2024-06-21 16:17:31,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:31,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:31,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 16:17:31,383 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:17:31,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:31,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1859614301, now seen corresponding path program 2 times [2024-06-21 16:17:31,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:31,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849195883] [2024-06-21 16:17:31,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:31,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:32,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:32,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:32,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849195883] [2024-06-21 16:17:32,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849195883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:32,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:32,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:17:32,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342130979] [2024-06-21 16:17:32,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:32,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:17:32,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:32,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:17:32,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:17:32,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 16:17:32,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 300 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:32,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:32,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 16:17:32,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:32,398 INFO L124 PetriNetUnfolderBase]: 198/373 cut-off events. [2024-06-21 16:17:32,399 INFO L125 PetriNetUnfolderBase]: For 3290/3293 co-relation queries the response was YES. [2024-06-21 16:17:32,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1643 conditions, 373 events. 198/373 cut-off events. For 3290/3293 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1413 event pairs, 50 based on Foata normal form. 3/373 useless extension candidates. Maximal degree in co-relation 1615. Up to 322 conditions per place. [2024-06-21 16:17:32,401 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 37 selfloop transitions, 13 changer transitions 0/58 dead transitions. [2024-06-21 16:17:32,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 58 transitions, 430 flow [2024-06-21 16:17:32,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:17:32,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:17:32,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2024-06-21 16:17:32,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41517857142857145 [2024-06-21 16:17:32,403 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 300 flow. Second operand 7 states and 93 transitions. [2024-06-21 16:17:32,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 58 transitions, 430 flow [2024-06-21 16:17:32,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 58 transitions, 383 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-21 16:17:32,407 INFO L231 Difference]: Finished difference. Result has 63 places, 51 transitions, 302 flow [2024-06-21 16:17:32,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=302, PETRI_PLACES=63, PETRI_TRANSITIONS=51} [2024-06-21 16:17:32,408 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2024-06-21 16:17:32,408 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 51 transitions, 302 flow [2024-06-21 16:17:32,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:32,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:32,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:32,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 16:17:32,409 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:17:32,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:32,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1859910971, now seen corresponding path program 3 times [2024-06-21 16:17:32,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:32,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529555028] [2024-06-21 16:17:32,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:32,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:33,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:33,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:33,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529555028] [2024-06-21 16:17:33,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529555028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:33,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:33,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:17:33,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028400802] [2024-06-21 16:17:33,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:33,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:17:33,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:33,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:17:33,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:17:33,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 16:17:33,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 51 transitions, 302 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:33,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:33,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 16:17:33,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:33,238 INFO L124 PetriNetUnfolderBase]: 196/370 cut-off events. [2024-06-21 16:17:33,238 INFO L125 PetriNetUnfolderBase]: For 3643/3646 co-relation queries the response was YES. [2024-06-21 16:17:33,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1670 conditions, 370 events. 196/370 cut-off events. For 3643/3646 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1407 event pairs, 50 based on Foata normal form. 3/370 useless extension candidates. Maximal degree in co-relation 1641. Up to 310 conditions per place. [2024-06-21 16:17:33,240 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 36 selfloop transitions, 18 changer transitions 0/62 dead transitions. [2024-06-21 16:17:33,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 62 transitions, 454 flow [2024-06-21 16:17:33,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:17:33,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:17:33,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2024-06-21 16:17:33,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41964285714285715 [2024-06-21 16:17:33,257 INFO L175 Difference]: Start difference. First operand has 63 places, 51 transitions, 302 flow. Second operand 7 states and 94 transitions. [2024-06-21 16:17:33,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 62 transitions, 454 flow [2024-06-21 16:17:33,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 62 transitions, 421 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-21 16:17:33,260 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 353 flow [2024-06-21 16:17:33,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=353, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2024-06-21 16:17:33,261 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 35 predicate places. [2024-06-21 16:17:33,261 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 353 flow [2024-06-21 16:17:33,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:33,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:33,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:33,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 16:17:33,262 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:17:33,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:33,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1217805020, now seen corresponding path program 1 times [2024-06-21 16:17:33,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:33,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856675657] [2024-06-21 16:17:33,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:33,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:33,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:33,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:33,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856675657] [2024-06-21 16:17:33,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856675657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:33,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:33,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:17:33,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848790119] [2024-06-21 16:17:33,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:33,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:17:33,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:33,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:17:33,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:17:33,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:17:33,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 353 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:33,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:33,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:17:33,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:34,065 INFO L124 PetriNetUnfolderBase]: 236/433 cut-off events. [2024-06-21 16:17:34,066 INFO L125 PetriNetUnfolderBase]: For 4556/4556 co-relation queries the response was YES. [2024-06-21 16:17:34,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2029 conditions, 433 events. 236/433 cut-off events. For 4556/4556 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1661 event pairs, 46 based on Foata normal form. 2/433 useless extension candidates. Maximal degree in co-relation 1998. Up to 363 conditions per place. [2024-06-21 16:17:34,068 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 60 selfloop transitions, 20 changer transitions 0/83 dead transitions. [2024-06-21 16:17:34,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 83 transitions, 637 flow [2024-06-21 16:17:34,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:17:34,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:17:34,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-21 16:17:34,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-21 16:17:34,070 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 353 flow. Second operand 9 states and 116 transitions. [2024-06-21 16:17:34,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 83 transitions, 637 flow [2024-06-21 16:17:34,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 83 transitions, 607 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-21 16:17:34,073 INFO L231 Difference]: Finished difference. Result has 75 places, 67 transitions, 468 flow [2024-06-21 16:17:34,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=468, PETRI_PLACES=75, PETRI_TRANSITIONS=67} [2024-06-21 16:17:34,074 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2024-06-21 16:17:34,074 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 67 transitions, 468 flow [2024-06-21 16:17:34,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:34,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:34,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:34,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 16:17:34,076 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:17:34,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:34,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1218721180, now seen corresponding path program 2 times [2024-06-21 16:17:34,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:34,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898105677] [2024-06-21 16:17:34,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:34,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:34,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:34,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:34,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898105677] [2024-06-21 16:17:34,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898105677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:34,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:34,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:17:34,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495608216] [2024-06-21 16:17:34,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:34,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:17:34,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:34,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:17:34,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:17:34,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:17:34,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 67 transitions, 468 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:34,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:34,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:17:34,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:34,974 INFO L124 PetriNetUnfolderBase]: 242/444 cut-off events. [2024-06-21 16:17:34,974 INFO L125 PetriNetUnfolderBase]: For 5293/5293 co-relation queries the response was YES. [2024-06-21 16:17:34,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2237 conditions, 444 events. 242/444 cut-off events. For 5293/5293 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1726 event pairs, 45 based on Foata normal form. 2/444 useless extension candidates. Maximal degree in co-relation 2201. Up to 365 conditions per place. [2024-06-21 16:17:34,976 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 60 selfloop transitions, 23 changer transitions 0/86 dead transitions. [2024-06-21 16:17:34,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 86 transitions, 710 flow [2024-06-21 16:17:34,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:17:34,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:17:34,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-21 16:17:34,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41015625 [2024-06-21 16:17:34,978 INFO L175 Difference]: Start difference. First operand has 75 places, 67 transitions, 468 flow. Second operand 8 states and 105 transitions. [2024-06-21 16:17:34,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 86 transitions, 710 flow [2024-06-21 16:17:34,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 86 transitions, 677 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-21 16:17:34,982 INFO L231 Difference]: Finished difference. Result has 80 places, 69 transitions, 516 flow [2024-06-21 16:17:34,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=516, PETRI_PLACES=80, PETRI_TRANSITIONS=69} [2024-06-21 16:17:34,983 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 49 predicate places. [2024-06-21 16:17:34,983 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 69 transitions, 516 flow [2024-06-21 16:17:34,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:34,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:34,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:34,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 16:17:34,984 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:17:34,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:34,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1218571450, now seen corresponding path program 3 times [2024-06-21 16:17:34,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:34,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661449484] [2024-06-21 16:17:34,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:34,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:34,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:35,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:35,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:35,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661449484] [2024-06-21 16:17:35,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661449484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:35,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:35,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:17:35,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940469415] [2024-06-21 16:17:35,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:35,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:17:35,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:35,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:17:35,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:17:35,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:17:35,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 69 transitions, 516 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:35,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:35,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:17:35,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:35,804 INFO L124 PetriNetUnfolderBase]: 248/457 cut-off events. [2024-06-21 16:17:35,805 INFO L125 PetriNetUnfolderBase]: For 6088/6088 co-relation queries the response was YES. [2024-06-21 16:17:35,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2384 conditions, 457 events. 248/457 cut-off events. For 6088/6088 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1811 event pairs, 48 based on Foata normal form. 2/457 useless extension candidates. Maximal degree in co-relation 2347. Up to 362 conditions per place. [2024-06-21 16:17:35,807 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 58 selfloop transitions, 25 changer transitions 0/86 dead transitions. [2024-06-21 16:17:35,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 86 transitions, 754 flow [2024-06-21 16:17:35,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:17:35,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:17:35,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-21 16:17:35,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41015625 [2024-06-21 16:17:35,809 INFO L175 Difference]: Start difference. First operand has 80 places, 69 transitions, 516 flow. Second operand 8 states and 105 transitions. [2024-06-21 16:17:35,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 86 transitions, 754 flow [2024-06-21 16:17:35,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 86 transitions, 691 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-21 16:17:35,813 INFO L231 Difference]: Finished difference. Result has 82 places, 71 transitions, 538 flow [2024-06-21 16:17:35,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=538, PETRI_PLACES=82, PETRI_TRANSITIONS=71} [2024-06-21 16:17:35,814 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2024-06-21 16:17:35,814 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 71 transitions, 538 flow [2024-06-21 16:17:35,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:35,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:35,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:35,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 16:17:35,815 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:17:35,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:35,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1218571233, now seen corresponding path program 1 times [2024-06-21 16:17:35,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:35,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339335100] [2024-06-21 16:17:35,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:35,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:36,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:36,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:36,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339335100] [2024-06-21 16:17:36,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339335100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:36,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:36,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:17:36,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901319774] [2024-06-21 16:17:36,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:36,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:17:36,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:36,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:17:36,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:17:36,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:17:36,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 71 transitions, 538 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:36,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:36,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:17:36,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:36,754 INFO L124 PetriNetUnfolderBase]: 251/461 cut-off events. [2024-06-21 16:17:36,754 INFO L125 PetriNetUnfolderBase]: For 5929/5929 co-relation queries the response was YES. [2024-06-21 16:17:36,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2387 conditions, 461 events. 251/461 cut-off events. For 5929/5929 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1820 event pairs, 44 based on Foata normal form. 1/460 useless extension candidates. Maximal degree in co-relation 2349. Up to 403 conditions per place. [2024-06-21 16:17:36,757 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 67 selfloop transitions, 17 changer transitions 0/87 dead transitions. [2024-06-21 16:17:36,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 87 transitions, 768 flow [2024-06-21 16:17:36,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:17:36,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:17:36,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-21 16:17:36,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39453125 [2024-06-21 16:17:36,758 INFO L175 Difference]: Start difference. First operand has 82 places, 71 transitions, 538 flow. Second operand 8 states and 101 transitions. [2024-06-21 16:17:36,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 87 transitions, 768 flow [2024-06-21 16:17:36,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 87 transitions, 703 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-21 16:17:36,763 INFO L231 Difference]: Finished difference. Result has 84 places, 73 transitions, 534 flow [2024-06-21 16:17:36,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=534, PETRI_PLACES=84, PETRI_TRANSITIONS=73} [2024-06-21 16:17:36,764 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 53 predicate places. [2024-06-21 16:17:36,764 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 73 transitions, 534 flow [2024-06-21 16:17:36,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:36,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:36,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:36,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 16:17:36,764 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:17:36,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:36,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1212999324, now seen corresponding path program 1 times [2024-06-21 16:17:36,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:36,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719072931] [2024-06-21 16:17:36,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:36,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:36,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:37,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:37,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:37,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719072931] [2024-06-21 16:17:37,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719072931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:37,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:37,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:17:37,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319324402] [2024-06-21 16:17:37,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:37,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:17:37,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:37,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:17:37,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:17:37,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 16:17:37,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 73 transitions, 534 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:37,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:37,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 16:17:37,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:37,772 INFO L124 PetriNetUnfolderBase]: 236/445 cut-off events. [2024-06-21 16:17:37,772 INFO L125 PetriNetUnfolderBase]: For 6297/6301 co-relation queries the response was YES. [2024-06-21 16:17:37,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2304 conditions, 445 events. 236/445 cut-off events. For 6297/6301 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1815 event pairs, 43 based on Foata normal form. 5/448 useless extension candidates. Maximal degree in co-relation 2265. Up to 379 conditions per place. [2024-06-21 16:17:37,775 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 62 selfloop transitions, 14 changer transitions 0/86 dead transitions. [2024-06-21 16:17:37,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 86 transitions, 734 flow [2024-06-21 16:17:37,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:17:37,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:17:37,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-21 16:17:37,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41015625 [2024-06-21 16:17:37,777 INFO L175 Difference]: Start difference. First operand has 84 places, 73 transitions, 534 flow. Second operand 8 states and 105 transitions. [2024-06-21 16:17:37,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 86 transitions, 734 flow [2024-06-21 16:17:37,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 86 transitions, 689 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-21 16:17:37,784 INFO L231 Difference]: Finished difference. Result has 86 places, 75 transitions, 542 flow [2024-06-21 16:17:37,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=542, PETRI_PLACES=86, PETRI_TRANSITIONS=75} [2024-06-21 16:17:37,785 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 55 predicate places. [2024-06-21 16:17:37,785 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 75 transitions, 542 flow [2024-06-21 16:17:37,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:37,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:37,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:37,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-21 16:17:37,786 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:17:37,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:37,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1212999603, now seen corresponding path program 2 times [2024-06-21 16:17:37,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:37,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647371304] [2024-06-21 16:17:37,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:37,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:37,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:38,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:38,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:38,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647371304] [2024-06-21 16:17:38,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647371304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:38,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:38,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:17:38,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766943406] [2024-06-21 16:17:38,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:38,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:17:38,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:38,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:17:38,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:17:38,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:17:38,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 75 transitions, 542 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:38,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:38,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:17:38,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:38,692 INFO L124 PetriNetUnfolderBase]: 262/479 cut-off events. [2024-06-21 16:17:38,693 INFO L125 PetriNetUnfolderBase]: For 7202/7202 co-relation queries the response was YES. [2024-06-21 16:17:38,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2566 conditions, 479 events. 262/479 cut-off events. For 7202/7202 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1920 event pairs, 45 based on Foata normal form. 1/478 useless extension candidates. Maximal degree in co-relation 2526. Up to 403 conditions per place. [2024-06-21 16:17:38,696 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 64 selfloop transitions, 24 changer transitions 0/91 dead transitions. [2024-06-21 16:17:38,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 91 transitions, 834 flow [2024-06-21 16:17:38,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:17:38,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:17:38,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-21 16:17:38,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-21 16:17:38,697 INFO L175 Difference]: Start difference. First operand has 86 places, 75 transitions, 542 flow. Second operand 8 states and 102 transitions. [2024-06-21 16:17:38,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 91 transitions, 834 flow [2024-06-21 16:17:38,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 91 transitions, 797 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-21 16:17:38,709 INFO L231 Difference]: Finished difference. Result has 88 places, 79 transitions, 606 flow [2024-06-21 16:17:38,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=606, PETRI_PLACES=88, PETRI_TRANSITIONS=79} [2024-06-21 16:17:38,709 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 57 predicate places. [2024-06-21 16:17:38,710 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 79 transitions, 606 flow [2024-06-21 16:17:38,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:38,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:38,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:38,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-21 16:17:38,710 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:17:38,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:38,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1213007260, now seen corresponding path program 4 times [2024-06-21 16:17:38,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:38,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095724093] [2024-06-21 16:17:38,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:38,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:38,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:39,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:39,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:39,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095724093] [2024-06-21 16:17:39,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095724093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:39,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:39,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:17:39,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805437216] [2024-06-21 16:17:39,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:39,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:17:39,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:39,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:17:39,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:17:39,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:17:39,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 79 transitions, 606 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:39,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:39,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:17:39,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:39,631 INFO L124 PetriNetUnfolderBase]: 268/492 cut-off events. [2024-06-21 16:17:39,631 INFO L125 PetriNetUnfolderBase]: For 8378/8378 co-relation queries the response was YES. [2024-06-21 16:17:39,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2715 conditions, 492 events. 268/492 cut-off events. For 8378/8378 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1991 event pairs, 50 based on Foata normal form. 2/492 useless extension candidates. Maximal degree in co-relation 2674. Up to 381 conditions per place. [2024-06-21 16:17:39,634 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 62 selfloop transitions, 28 changer transitions 0/93 dead transitions. [2024-06-21 16:17:39,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 93 transitions, 846 flow [2024-06-21 16:17:39,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:17:39,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:17:39,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-21 16:17:39,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 16:17:39,635 INFO L175 Difference]: Start difference. First operand has 88 places, 79 transitions, 606 flow. Second operand 8 states and 104 transitions. [2024-06-21 16:17:39,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 93 transitions, 846 flow [2024-06-21 16:17:39,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 93 transitions, 805 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-21 16:17:39,642 INFO L231 Difference]: Finished difference. Result has 92 places, 81 transitions, 656 flow [2024-06-21 16:17:39,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=656, PETRI_PLACES=92, PETRI_TRANSITIONS=81} [2024-06-21 16:17:39,643 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 61 predicate places. [2024-06-21 16:17:39,643 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 81 transitions, 656 flow [2024-06-21 16:17:39,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:39,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:39,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:39,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-21 16:17:39,643 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:17:39,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:39,644 INFO L85 PathProgramCache]: Analyzing trace with hash -725577109, now seen corresponding path program 3 times [2024-06-21 16:17:39,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:39,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041676210] [2024-06-21 16:17:39,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:39,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:39,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:40,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:40,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:40,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041676210] [2024-06-21 16:17:40,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041676210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:40,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:40,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:17:40,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233178653] [2024-06-21 16:17:40,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:40,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:17:40,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:40,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:17:40,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:17:40,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:17:40,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 81 transitions, 656 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:40,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:40,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:17:40,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:40,585 INFO L124 PetriNetUnfolderBase]: 266/488 cut-off events. [2024-06-21 16:17:40,586 INFO L125 PetriNetUnfolderBase]: For 8634/8634 co-relation queries the response was YES. [2024-06-21 16:17:40,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2785 conditions, 488 events. 266/488 cut-off events. For 8634/8634 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1957 event pairs, 45 based on Foata normal form. 1/487 useless extension candidates. Maximal degree in co-relation 2742. Up to 420 conditions per place. [2024-06-21 16:17:40,589 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 70 selfloop transitions, 19 changer transitions 0/92 dead transitions. [2024-06-21 16:17:40,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 92 transitions, 866 flow [2024-06-21 16:17:40,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:17:40,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:17:40,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-21 16:17:40,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-21 16:17:40,590 INFO L175 Difference]: Start difference. First operand has 92 places, 81 transitions, 656 flow. Second operand 8 states and 100 transitions. [2024-06-21 16:17:40,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 92 transitions, 866 flow [2024-06-21 16:17:40,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 92 transitions, 781 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-21 16:17:40,597 INFO L231 Difference]: Finished difference. Result has 94 places, 81 transitions, 614 flow [2024-06-21 16:17:40,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=614, PETRI_PLACES=94, PETRI_TRANSITIONS=81} [2024-06-21 16:17:40,598 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 63 predicate places. [2024-06-21 16:17:40,598 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 81 transitions, 614 flow [2024-06-21 16:17:40,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:40,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:40,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:40,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-21 16:17:40,599 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:17:40,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:40,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1813461821, now seen corresponding path program 4 times [2024-06-21 16:17:40,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:40,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529703717] [2024-06-21 16:17:40,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:40,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:41,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:41,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:41,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529703717] [2024-06-21 16:17:41,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529703717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:41,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:41,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:17:41,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786904493] [2024-06-21 16:17:41,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:41,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:17:41,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:41,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:17:41,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:17:41,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:17:41,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 81 transitions, 614 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:41,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:41,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:17:41,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:41,589 INFO L124 PetriNetUnfolderBase]: 269/494 cut-off events. [2024-06-21 16:17:41,590 INFO L125 PetriNetUnfolderBase]: For 9234/9237 co-relation queries the response was YES. [2024-06-21 16:17:41,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2788 conditions, 494 events. 269/494 cut-off events. For 9234/9237 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1988 event pairs, 51 based on Foata normal form. 1/490 useless extension candidates. Maximal degree in co-relation 2744. Up to 416 conditions per place. [2024-06-21 16:17:41,593 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 66 selfloop transitions, 23 changer transitions 0/92 dead transitions. [2024-06-21 16:17:41,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 92 transitions, 844 flow [2024-06-21 16:17:41,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:17:41,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:17:41,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-21 16:17:41,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38671875 [2024-06-21 16:17:41,594 INFO L175 Difference]: Start difference. First operand has 94 places, 81 transitions, 614 flow. Second operand 8 states and 99 transitions. [2024-06-21 16:17:41,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 92 transitions, 844 flow [2024-06-21 16:17:41,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 92 transitions, 792 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-21 16:17:41,601 INFO L231 Difference]: Finished difference. Result has 95 places, 83 transitions, 643 flow [2024-06-21 16:17:41,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=643, PETRI_PLACES=95, PETRI_TRANSITIONS=83} [2024-06-21 16:17:41,601 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 64 predicate places. [2024-06-21 16:17:41,602 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 83 transitions, 643 flow [2024-06-21 16:17:41,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:41,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:41,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:41,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-21 16:17:41,602 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:17:41,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:41,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1813461604, now seen corresponding path program 5 times [2024-06-21 16:17:41,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:41,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797650717] [2024-06-21 16:17:41,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:41,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:41,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:42,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:42,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:42,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797650717] [2024-06-21 16:17:42,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797650717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:42,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:42,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:17:42,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527608819] [2024-06-21 16:17:42,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:42,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:17:42,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:42,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:17:42,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:17:42,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:17:42,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 83 transitions, 643 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:42,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:42,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:17:42,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:42,503 INFO L124 PetriNetUnfolderBase]: 270/498 cut-off events. [2024-06-21 16:17:42,504 INFO L125 PetriNetUnfolderBase]: For 10146/10149 co-relation queries the response was YES. [2024-06-21 16:17:42,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2850 conditions, 498 events. 270/498 cut-off events. For 10146/10149 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2012 event pairs, 59 based on Foata normal form. 2/495 useless extension candidates. Maximal degree in co-relation 2805. Up to 370 conditions per place. [2024-06-21 16:17:42,507 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 59 selfloop transitions, 33 changer transitions 0/95 dead transitions. [2024-06-21 16:17:42,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 95 transitions, 885 flow [2024-06-21 16:17:42,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:17:42,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:17:42,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-21 16:17:42,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40234375 [2024-06-21 16:17:42,509 INFO L175 Difference]: Start difference. First operand has 95 places, 83 transitions, 643 flow. Second operand 8 states and 103 transitions. [2024-06-21 16:17:42,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 95 transitions, 885 flow [2024-06-21 16:17:42,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 95 transitions, 820 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-21 16:17:42,519 INFO L231 Difference]: Finished difference. Result has 97 places, 85 transitions, 683 flow [2024-06-21 16:17:42,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=683, PETRI_PLACES=97, PETRI_TRANSITIONS=85} [2024-06-21 16:17:42,519 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 66 predicate places. [2024-06-21 16:17:42,519 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 85 transitions, 683 flow [2024-06-21 16:17:42,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:42,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:42,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:42,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-21 16:17:42,520 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:17:42,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:42,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1813469261, now seen corresponding path program 5 times [2024-06-21 16:17:42,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:42,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179431110] [2024-06-21 16:17:42,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:42,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:43,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:43,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:43,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179431110] [2024-06-21 16:17:43,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179431110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:43,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:43,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:17:43,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023528924] [2024-06-21 16:17:43,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:43,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:17:43,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:43,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:17:43,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:17:43,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:17:43,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 85 transitions, 683 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:43,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:43,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:17:43,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:43,595 INFO L124 PetriNetUnfolderBase]: 273/503 cut-off events. [2024-06-21 16:17:43,596 INFO L125 PetriNetUnfolderBase]: For 10785/10788 co-relation queries the response was YES. [2024-06-21 16:17:43,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2962 conditions, 503 events. 273/503 cut-off events. For 10785/10788 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2041 event pairs, 51 based on Foata normal form. 1/499 useless extension candidates. Maximal degree in co-relation 2916. Up to 417 conditions per place. [2024-06-21 16:17:43,606 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 67 selfloop transitions, 26 changer transitions 0/96 dead transitions. [2024-06-21 16:17:43,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 96 transitions, 925 flow [2024-06-21 16:17:43,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:17:43,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:17:43,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-21 16:17:43,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39453125 [2024-06-21 16:17:43,608 INFO L175 Difference]: Start difference. First operand has 97 places, 85 transitions, 683 flow. Second operand 8 states and 101 transitions. [2024-06-21 16:17:43,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 96 transitions, 925 flow [2024-06-21 16:17:43,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 96 transitions, 836 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-21 16:17:43,619 INFO L231 Difference]: Finished difference. Result has 99 places, 87 transitions, 685 flow [2024-06-21 16:17:43,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=685, PETRI_PLACES=99, PETRI_TRANSITIONS=87} [2024-06-21 16:17:43,620 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 68 predicate places. [2024-06-21 16:17:43,620 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 87 transitions, 685 flow [2024-06-21 16:17:43,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:43,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:43,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:43,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-21 16:17:43,621 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:17:43,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:43,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1822666310, now seen corresponding path program 2 times [2024-06-21 16:17:43,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:43,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586032589] [2024-06-21 16:17:43,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:43,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:43,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:44,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:44,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:44,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586032589] [2024-06-21 16:17:44,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586032589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:44,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:44,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:17:44,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047096598] [2024-06-21 16:17:44,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:44,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:17:44,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:44,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:17:44,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:17:44,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 16:17:44,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 87 transitions, 685 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:44,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:44,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 16:17:44,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:44,691 INFO L124 PetriNetUnfolderBase]: 270/507 cut-off events. [2024-06-21 16:17:44,692 INFO L125 PetriNetUnfolderBase]: For 12336/12343 co-relation queries the response was YES. [2024-06-21 16:17:44,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2987 conditions, 507 events. 270/507 cut-off events. For 12336/12343 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2144 event pairs, 44 based on Foata normal form. 8/511 useless extension candidates. Maximal degree in co-relation 2940. Up to 379 conditions per place. [2024-06-21 16:17:44,698 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 67 selfloop transitions, 26 changer transitions 0/107 dead transitions. [2024-06-21 16:17:44,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 107 transitions, 1073 flow [2024-06-21 16:17:44,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:17:44,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:17:44,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2024-06-21 16:17:44,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-21 16:17:44,699 INFO L175 Difference]: Start difference. First operand has 99 places, 87 transitions, 685 flow. Second operand 8 states and 112 transitions. [2024-06-21 16:17:44,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 107 transitions, 1073 flow [2024-06-21 16:17:44,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 107 transitions, 998 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-21 16:17:44,708 INFO L231 Difference]: Finished difference. Result has 101 places, 93 transitions, 731 flow [2024-06-21 16:17:44,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=731, PETRI_PLACES=101, PETRI_TRANSITIONS=93} [2024-06-21 16:17:44,709 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 70 predicate places. [2024-06-21 16:17:44,709 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 93 transitions, 731 flow [2024-06-21 16:17:44,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:44,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:44,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:44,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-21 16:17:44,709 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:17:44,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:44,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1813469540, now seen corresponding path program 3 times [2024-06-21 16:17:44,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:44,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968658979] [2024-06-21 16:17:44,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:44,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:44,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:45,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:45,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:45,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968658979] [2024-06-21 16:17:45,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968658979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:45,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:45,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:17:45,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909304673] [2024-06-21 16:17:45,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:45,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:17:45,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:45,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:17:45,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:17:45,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 16:17:45,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 93 transitions, 731 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:45,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:45,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 16:17:45,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:45,803 INFO L124 PetriNetUnfolderBase]: 268/503 cut-off events. [2024-06-21 16:17:45,803 INFO L125 PetriNetUnfolderBase]: For 12550/12554 co-relation queries the response was YES. [2024-06-21 16:17:45,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2999 conditions, 503 events. 268/503 cut-off events. For 12550/12554 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2115 event pairs, 49 based on Foata normal form. 5/505 useless extension candidates. Maximal degree in co-relation 2951. Up to 419 conditions per place. [2024-06-21 16:17:45,806 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 72 selfloop transitions, 20 changer transitions 0/106 dead transitions. [2024-06-21 16:17:45,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 106 transitions, 982 flow [2024-06-21 16:17:45,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:17:45,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:17:45,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-21 16:17:45,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140625 [2024-06-21 16:17:45,807 INFO L175 Difference]: Start difference. First operand has 101 places, 93 transitions, 731 flow. Second operand 8 states and 106 transitions. [2024-06-21 16:17:45,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 106 transitions, 982 flow [2024-06-21 16:17:45,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 106 transitions, 951 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-21 16:17:45,816 INFO L231 Difference]: Finished difference. Result has 107 places, 98 transitions, 800 flow [2024-06-21 16:17:45,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=701, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=800, PETRI_PLACES=107, PETRI_TRANSITIONS=98} [2024-06-21 16:17:45,821 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 76 predicate places. [2024-06-21 16:17:45,821 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 98 transitions, 800 flow [2024-06-21 16:17:45,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:45,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:45,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:45,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-21 16:17:45,821 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:17:45,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:45,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1822666031, now seen corresponding path program 6 times [2024-06-21 16:17:45,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:45,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640738120] [2024-06-21 16:17:45,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:45,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:46,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:46,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:46,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640738120] [2024-06-21 16:17:46,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640738120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:46,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:46,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:17:46,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728347705] [2024-06-21 16:17:46,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:46,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:17:46,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:46,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:17:46,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:17:46,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:17:46,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 98 transitions, 800 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:46,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:46,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:17:46,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:46,781 INFO L124 PetriNetUnfolderBase]: 285/523 cut-off events. [2024-06-21 16:17:46,781 INFO L125 PetriNetUnfolderBase]: For 13191/13191 co-relation queries the response was YES. [2024-06-21 16:17:46,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3191 conditions, 523 events. 285/523 cut-off events. For 13191/13191 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2147 event pairs, 54 based on Foata normal form. 1/519 useless extension candidates. Maximal degree in co-relation 3140. Up to 416 conditions per place. [2024-06-21 16:17:46,785 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 68 selfloop transitions, 37 changer transitions 0/108 dead transitions. [2024-06-21 16:17:46,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 108 transitions, 1068 flow [2024-06-21 16:17:46,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:17:46,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:17:46,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-21 16:17:46,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39453125 [2024-06-21 16:17:46,786 INFO L175 Difference]: Start difference. First operand has 107 places, 98 transitions, 800 flow. Second operand 8 states and 101 transitions. [2024-06-21 16:17:46,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 108 transitions, 1068 flow [2024-06-21 16:17:46,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 108 transitions, 1026 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-21 16:17:46,797 INFO L231 Difference]: Finished difference. Result has 111 places, 100 transitions, 875 flow [2024-06-21 16:17:46,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=875, PETRI_PLACES=111, PETRI_TRANSITIONS=100} [2024-06-21 16:17:46,797 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 80 predicate places. [2024-06-21 16:17:46,797 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 100 transitions, 875 flow [2024-06-21 16:17:46,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:46,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:46,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:46,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-21 16:17:46,798 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:17:46,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:46,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1822992740, now seen corresponding path program 4 times [2024-06-21 16:17:46,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:46,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772803229] [2024-06-21 16:17:46,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:46,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:47,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:47,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:47,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772803229] [2024-06-21 16:17:47,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772803229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:47,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:47,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:17:47,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517868818] [2024-06-21 16:17:47,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:47,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:17:47,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:47,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:17:47,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:17:47,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 16:17:47,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 100 transitions, 875 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:47,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:47,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 16:17:47,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:47,886 INFO L124 PetriNetUnfolderBase]: 262/493 cut-off events. [2024-06-21 16:17:47,886 INFO L125 PetriNetUnfolderBase]: For 13416/13420 co-relation queries the response was YES. [2024-06-21 16:17:47,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3017 conditions, 493 events. 262/493 cut-off events. For 13416/13420 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2048 event pairs, 47 based on Foata normal form. 6/495 useless extension candidates. Maximal degree in co-relation 2963. Up to 419 conditions per place. [2024-06-21 16:17:47,889 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 82 selfloop transitions, 12 changer transitions 0/109 dead transitions. [2024-06-21 16:17:47,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 109 transitions, 1091 flow [2024-06-21 16:17:47,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:17:47,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:17:47,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-21 16:17:47,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 16:17:47,890 INFO L175 Difference]: Start difference. First operand has 111 places, 100 transitions, 875 flow. Second operand 8 states and 104 transitions. [2024-06-21 16:17:47,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 109 transitions, 1091 flow [2024-06-21 16:17:47,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 109 transitions, 978 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-21 16:17:47,901 INFO L231 Difference]: Finished difference. Result has 113 places, 100 transitions, 791 flow [2024-06-21 16:17:47,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=791, PETRI_PLACES=113, PETRI_TRANSITIONS=100} [2024-06-21 16:17:47,902 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 82 predicate places. [2024-06-21 16:17:47,902 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 100 transitions, 791 flow [2024-06-21 16:17:47,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:47,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:47,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:47,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-21 16:17:47,902 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:17:47,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:47,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1823004644, now seen corresponding path program 1 times [2024-06-21 16:17:47,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:47,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012355294] [2024-06-21 16:17:47,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:47,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:47,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:49,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:49,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:49,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012355294] [2024-06-21 16:17:49,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012355294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:49,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:49,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:17:49,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777733009] [2024-06-21 16:17:49,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:49,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:17:49,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:49,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:17:49,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:17:49,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 16:17:49,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 100 transitions, 791 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:49,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:49,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 16:17:49,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:49,720 INFO L124 PetriNetUnfolderBase]: 259/488 cut-off events. [2024-06-21 16:17:49,720 INFO L125 PetriNetUnfolderBase]: For 13350/13354 co-relation queries the response was YES. [2024-06-21 16:17:49,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2886 conditions, 488 events. 259/488 cut-off events. For 13350/13354 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2015 event pairs, 46 based on Foata normal form. 6/490 useless extension candidates. Maximal degree in co-relation 2831. Up to 416 conditions per place. [2024-06-21 16:17:49,723 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 83 selfloop transitions, 13 changer transitions 0/111 dead transitions. [2024-06-21 16:17:49,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 111 transitions, 1020 flow [2024-06-21 16:17:49,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:17:49,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:17:49,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-21 16:17:49,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-21 16:17:49,724 INFO L175 Difference]: Start difference. First operand has 113 places, 100 transitions, 791 flow. Second operand 9 states and 112 transitions. [2024-06-21 16:17:49,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 111 transitions, 1020 flow [2024-06-21 16:17:49,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 111 transitions, 965 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-21 16:17:49,736 INFO L231 Difference]: Finished difference. Result has 115 places, 102 transitions, 788 flow [2024-06-21 16:17:49,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=788, PETRI_PLACES=115, PETRI_TRANSITIONS=102} [2024-06-21 16:17:49,736 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 84 predicate places. [2024-06-21 16:17:49,736 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 102 transitions, 788 flow [2024-06-21 16:17:49,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:49,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:49,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:49,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-21 16:17:49,737 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:17:49,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:49,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1195311276, now seen corresponding path program 1 times [2024-06-21 16:17:49,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:49,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790399673] [2024-06-21 16:17:49,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:49,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:50,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:50,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:50,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790399673] [2024-06-21 16:17:50,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790399673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:50,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:50,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:17:50,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019178618] [2024-06-21 16:17:50,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:50,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:17:50,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:50,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:17:50,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:17:50,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:17:50,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 102 transitions, 788 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:50,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:50,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:17:50,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:50,906 INFO L124 PetriNetUnfolderBase]: 276/508 cut-off events. [2024-06-21 16:17:50,906 INFO L125 PetriNetUnfolderBase]: For 13683/13683 co-relation queries the response was YES. [2024-06-21 16:17:50,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3036 conditions, 508 events. 276/508 cut-off events. For 13683/13683 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2069 event pairs, 41 based on Foata normal form. 1/507 useless extension candidates. Maximal degree in co-relation 2980. Up to 419 conditions per place. [2024-06-21 16:17:50,909 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 95 selfloop transitions, 24 changer transitions 0/122 dead transitions. [2024-06-21 16:17:50,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 122 transitions, 1116 flow [2024-06-21 16:17:50,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:17:50,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:17:50,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-21 16:17:50,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 16:17:50,911 INFO L175 Difference]: Start difference. First operand has 115 places, 102 transitions, 788 flow. Second operand 9 states and 117 transitions. [2024-06-21 16:17:50,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 122 transitions, 1116 flow [2024-06-21 16:17:50,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 122 transitions, 1084 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-21 16:17:50,922 INFO L231 Difference]: Finished difference. Result has 118 places, 104 transitions, 847 flow [2024-06-21 16:17:50,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=847, PETRI_PLACES=118, PETRI_TRANSITIONS=104} [2024-06-21 16:17:50,923 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 87 predicate places. [2024-06-21 16:17:50,923 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 104 transitions, 847 flow [2024-06-21 16:17:50,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:50,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:50,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:50,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-21 16:17:50,924 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:17:50,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:50,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1195191120, now seen corresponding path program 1 times [2024-06-21 16:17:50,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:50,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261956473] [2024-06-21 16:17:50,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:50,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:50,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:51,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:51,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:51,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261956473] [2024-06-21 16:17:51,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261956473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:51,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:51,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:17:51,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767028574] [2024-06-21 16:17:51,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:51,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:17:51,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:51,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:17:51,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:17:51,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:17:51,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 104 transitions, 847 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:51,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:51,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:17:51,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:52,045 INFO L124 PetriNetUnfolderBase]: 282/518 cut-off events. [2024-06-21 16:17:52,046 INFO L125 PetriNetUnfolderBase]: For 15197/15197 co-relation queries the response was YES. [2024-06-21 16:17:52,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3182 conditions, 518 events. 282/518 cut-off events. For 15197/15197 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2118 event pairs, 40 based on Foata normal form. 2/518 useless extension candidates. Maximal degree in co-relation 3125. Up to 423 conditions per place. [2024-06-21 16:17:52,049 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 93 selfloop transitions, 27 changer transitions 0/123 dead transitions. [2024-06-21 16:17:52,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 123 transitions, 1171 flow [2024-06-21 16:17:52,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:17:52,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:17:52,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-21 16:17:52,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-21 16:17:52,051 INFO L175 Difference]: Start difference. First operand has 118 places, 104 transitions, 847 flow. Second operand 9 states and 116 transitions. [2024-06-21 16:17:52,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 123 transitions, 1171 flow [2024-06-21 16:17:52,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 123 transitions, 1096 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-21 16:17:52,069 INFO L231 Difference]: Finished difference. Result has 120 places, 107 transitions, 875 flow [2024-06-21 16:17:52,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=875, PETRI_PLACES=120, PETRI_TRANSITIONS=107} [2024-06-21 16:17:52,070 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 89 predicate places. [2024-06-21 16:17:52,070 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 107 transitions, 875 flow [2024-06-21 16:17:52,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:52,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:52,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:52,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-21 16:17:52,071 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:17:52,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:52,071 INFO L85 PathProgramCache]: Analyzing trace with hash -179716258, now seen corresponding path program 2 times [2024-06-21 16:17:52,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:52,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232876867] [2024-06-21 16:17:52,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:52,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:52,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:52,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:52,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:52,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232876867] [2024-06-21 16:17:52,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232876867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:52,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:52,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:17:52,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285190447] [2024-06-21 16:17:52,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:52,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:17:52,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:52,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:17:52,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:17:52,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:17:52,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 107 transitions, 875 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:52,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:52,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:17:52,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:53,141 INFO L124 PetriNetUnfolderBase]: 295/540 cut-off events. [2024-06-21 16:17:53,141 INFO L125 PetriNetUnfolderBase]: For 17171/17171 co-relation queries the response was YES. [2024-06-21 16:17:53,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3463 conditions, 540 events. 295/540 cut-off events. For 17171/17171 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2237 event pairs, 43 based on Foata normal form. 1/539 useless extension candidates. Maximal degree in co-relation 3405. Up to 417 conditions per place. [2024-06-21 16:17:53,144 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 88 selfloop transitions, 35 changer transitions 0/126 dead transitions. [2024-06-21 16:17:53,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 126 transitions, 1291 flow [2024-06-21 16:17:53,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:17:53,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:17:53,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-21 16:17:53,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 16:17:53,146 INFO L175 Difference]: Start difference. First operand has 120 places, 107 transitions, 875 flow. Second operand 9 states and 117 transitions. [2024-06-21 16:17:53,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 126 transitions, 1291 flow [2024-06-21 16:17:53,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 126 transitions, 1212 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-21 16:17:53,162 INFO L231 Difference]: Finished difference. Result has 123 places, 112 transitions, 959 flow [2024-06-21 16:17:53,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=959, PETRI_PLACES=123, PETRI_TRANSITIONS=112} [2024-06-21 16:17:53,162 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 92 predicate places. [2024-06-21 16:17:53,162 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 112 transitions, 959 flow [2024-06-21 16:17:53,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:53,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:53,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:53,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-21 16:17:53,163 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:17:53,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:53,163 INFO L85 PathProgramCache]: Analyzing trace with hash 878998498, now seen corresponding path program 1 times [2024-06-21 16:17:53,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:53,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636942702] [2024-06-21 16:17:53,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:53,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:54,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:54,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:54,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636942702] [2024-06-21 16:17:54,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636942702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:54,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:54,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:17:54,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673845640] [2024-06-21 16:17:54,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:54,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:17:54,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:54,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:17:54,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:17:54,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:17:54,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 112 transitions, 959 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:54,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:54,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:17:54,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:54,298 INFO L124 PetriNetUnfolderBase]: 298/544 cut-off events. [2024-06-21 16:17:54,298 INFO L125 PetriNetUnfolderBase]: For 18604/18604 co-relation queries the response was YES. [2024-06-21 16:17:54,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3613 conditions, 544 events. 298/544 cut-off events. For 18604/18604 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2247 event pairs, 39 based on Foata normal form. 1/543 useless extension candidates. Maximal degree in co-relation 3553. Up to 479 conditions per place. [2024-06-21 16:17:54,301 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 104 selfloop transitions, 20 changer transitions 0/127 dead transitions. [2024-06-21 16:17:54,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 127 transitions, 1273 flow [2024-06-21 16:17:54,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:17:54,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:17:54,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-21 16:17:54,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-21 16:17:54,303 INFO L175 Difference]: Start difference. First operand has 123 places, 112 transitions, 959 flow. Second operand 9 states and 111 transitions. [2024-06-21 16:17:54,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 127 transitions, 1273 flow [2024-06-21 16:17:54,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 127 transitions, 1211 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-21 16:17:54,317 INFO L231 Difference]: Finished difference. Result has 127 places, 114 transitions, 974 flow [2024-06-21 16:17:54,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=897, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=974, PETRI_PLACES=127, PETRI_TRANSITIONS=114} [2024-06-21 16:17:54,318 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 96 predicate places. [2024-06-21 16:17:54,318 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 114 transitions, 974 flow [2024-06-21 16:17:54,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:54,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:54,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:54,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-21 16:17:54,319 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:17:54,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:54,319 INFO L85 PathProgramCache]: Analyzing trace with hash 878991740, now seen corresponding path program 3 times [2024-06-21 16:17:54,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:54,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046310682] [2024-06-21 16:17:54,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:54,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:54,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:55,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:55,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:55,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046310682] [2024-06-21 16:17:55,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046310682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:55,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:55,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:17:55,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367858446] [2024-06-21 16:17:55,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:55,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:17:55,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:55,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:17:55,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:17:55,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:17:55,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 114 transitions, 974 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:55,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:55,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:17:55,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:55,483 INFO L124 PetriNetUnfolderBase]: 294/539 cut-off events. [2024-06-21 16:17:55,484 INFO L125 PetriNetUnfolderBase]: For 18875/18875 co-relation queries the response was YES. [2024-06-21 16:17:55,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3562 conditions, 539 events. 294/539 cut-off events. For 18875/18875 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2233 event pairs, 42 based on Foata normal form. 2/539 useless extension candidates. Maximal degree in co-relation 3500. Up to 434 conditions per place. [2024-06-21 16:17:55,487 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 96 selfloop transitions, 29 changer transitions 0/128 dead transitions. [2024-06-21 16:17:55,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 128 transitions, 1274 flow [2024-06-21 16:17:55,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:17:55,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:17:55,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-21 16:17:55,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-21 16:17:55,488 INFO L175 Difference]: Start difference. First operand has 127 places, 114 transitions, 974 flow. Second operand 9 states and 116 transitions. [2024-06-21 16:17:55,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 128 transitions, 1274 flow [2024-06-21 16:17:55,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 128 transitions, 1191 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-21 16:17:55,506 INFO L231 Difference]: Finished difference. Result has 129 places, 114 transitions, 955 flow [2024-06-21 16:17:55,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=891, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=955, PETRI_PLACES=129, PETRI_TRANSITIONS=114} [2024-06-21 16:17:55,507 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 98 predicate places. [2024-06-21 16:17:55,507 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 114 transitions, 955 flow [2024-06-21 16:17:55,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:55,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:55,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:55,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-21 16:17:55,508 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:17:55,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:55,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1017822450, now seen corresponding path program 4 times [2024-06-21 16:17:55,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:55,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064245675] [2024-06-21 16:17:55,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:55,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:56,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:56,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:56,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064245675] [2024-06-21 16:17:56,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064245675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:56,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:56,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:17:56,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478440905] [2024-06-21 16:17:56,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:56,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:17:56,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:56,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:17:56,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:17:56,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:17:56,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 114 transitions, 955 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:56,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:56,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:17:56,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:56,501 INFO L124 PetriNetUnfolderBase]: 307/560 cut-off events. [2024-06-21 16:17:56,501 INFO L125 PetriNetUnfolderBase]: For 20799/20799 co-relation queries the response was YES. [2024-06-21 16:17:56,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3806 conditions, 560 events. 307/560 cut-off events. For 20799/20799 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2333 event pairs, 46 based on Foata normal form. 1/559 useless extension candidates. Maximal degree in co-relation 3743. Up to 403 conditions per place. [2024-06-21 16:17:56,505 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 83 selfloop transitions, 45 changer transitions 0/131 dead transitions. [2024-06-21 16:17:56,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 131 transitions, 1399 flow [2024-06-21 16:17:56,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:17:56,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:17:56,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-21 16:17:56,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 16:17:56,506 INFO L175 Difference]: Start difference. First operand has 129 places, 114 transitions, 955 flow. Second operand 9 states and 117 transitions. [2024-06-21 16:17:56,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 131 transitions, 1399 flow [2024-06-21 16:17:56,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 131 transitions, 1323 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-21 16:17:56,525 INFO L231 Difference]: Finished difference. Result has 131 places, 119 transitions, 1086 flow [2024-06-21 16:17:56,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=879, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1086, PETRI_PLACES=131, PETRI_TRANSITIONS=119} [2024-06-21 16:17:56,526 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 100 predicate places. [2024-06-21 16:17:56,526 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 119 transitions, 1086 flow [2024-06-21 16:17:56,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:56,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:56,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:56,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-21 16:17:56,526 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:17:56,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:56,527 INFO L85 PathProgramCache]: Analyzing trace with hash -265399390, now seen corresponding path program 2 times [2024-06-21 16:17:56,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:56,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071380864] [2024-06-21 16:17:56,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:56,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:57,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:57,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:57,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071380864] [2024-06-21 16:17:57,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071380864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:57,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:57,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:17:57,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302954125] [2024-06-21 16:17:57,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:57,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:17:57,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:57,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:17:57,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:17:57,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:17:57,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 119 transitions, 1086 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:57,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:57,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:17:57,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:57,613 INFO L124 PetriNetUnfolderBase]: 338/609 cut-off events. [2024-06-21 16:17:57,614 INFO L125 PetriNetUnfolderBase]: For 26352/26352 co-relation queries the response was YES. [2024-06-21 16:17:57,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4494 conditions, 609 events. 338/609 cut-off events. For 26352/26352 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2586 event pairs, 42 based on Foata normal form. 2/609 useless extension candidates. Maximal degree in co-relation 4429. Up to 491 conditions per place. [2024-06-21 16:17:57,618 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 109 selfloop transitions, 31 changer transitions 0/143 dead transitions. [2024-06-21 16:17:57,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 143 transitions, 1686 flow [2024-06-21 16:17:57,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:17:57,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:17:57,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-21 16:17:57,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-21 16:17:57,622 INFO L175 Difference]: Start difference. First operand has 131 places, 119 transitions, 1086 flow. Second operand 9 states and 118 transitions. [2024-06-21 16:17:57,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 143 transitions, 1686 flow [2024-06-21 16:17:57,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 143 transitions, 1615 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-21 16:17:57,647 INFO L231 Difference]: Finished difference. Result has 136 places, 127 transitions, 1212 flow [2024-06-21 16:17:57,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1015, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1212, PETRI_PLACES=136, PETRI_TRANSITIONS=127} [2024-06-21 16:17:57,648 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 105 predicate places. [2024-06-21 16:17:57,648 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 127 transitions, 1212 flow [2024-06-21 16:17:57,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:57,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:57,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:57,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-21 16:17:57,649 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:17:57,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:57,649 INFO L85 PathProgramCache]: Analyzing trace with hash -265636788, now seen corresponding path program 5 times [2024-06-21 16:17:57,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:57,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907885483] [2024-06-21 16:17:57,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:57,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:57,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:58,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:58,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:58,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907885483] [2024-06-21 16:17:58,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907885483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:58,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:58,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:17:58,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748310098] [2024-06-21 16:17:58,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:58,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:17:58,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:58,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:17:58,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:17:58,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:17:58,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 127 transitions, 1212 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:58,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:58,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:17:58,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:58,714 INFO L124 PetriNetUnfolderBase]: 339/612 cut-off events. [2024-06-21 16:17:58,714 INFO L125 PetriNetUnfolderBase]: For 27449/27449 co-relation queries the response was YES. [2024-06-21 16:17:58,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4593 conditions, 612 events. 339/612 cut-off events. For 27449/27449 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2621 event pairs, 50 based on Foata normal form. 2/612 useless extension candidates. Maximal degree in co-relation 4525. Up to 493 conditions per place. [2024-06-21 16:17:58,718 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 107 selfloop transitions, 31 changer transitions 0/141 dead transitions. [2024-06-21 16:17:58,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 141 transitions, 1576 flow [2024-06-21 16:17:58,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:17:58,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:17:58,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-21 16:17:58,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-21 16:17:58,719 INFO L175 Difference]: Start difference. First operand has 136 places, 127 transitions, 1212 flow. Second operand 9 states and 115 transitions. [2024-06-21 16:17:58,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 141 transitions, 1576 flow [2024-06-21 16:17:58,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 141 transitions, 1521 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-21 16:17:58,779 INFO L231 Difference]: Finished difference. Result has 141 places, 129 transitions, 1269 flow [2024-06-21 16:17:58,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1269, PETRI_PLACES=141, PETRI_TRANSITIONS=129} [2024-06-21 16:17:58,782 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 110 predicate places. [2024-06-21 16:17:58,782 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 129 transitions, 1269 flow [2024-06-21 16:17:58,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:58,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:17:58,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:17:58,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-21 16:17:58,782 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:17:58,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:17:58,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1018053090, now seen corresponding path program 6 times [2024-06-21 16:17:58,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:17:58,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992107214] [2024-06-21 16:17:58,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:17:58,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:17:58,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:17:59,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:17:59,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:17:59,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992107214] [2024-06-21 16:17:59,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992107214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:17:59,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:17:59,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:17:59,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164306317] [2024-06-21 16:17:59,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:17:59,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:17:59,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:17:59,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:17:59,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:17:59,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:17:59,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 129 transitions, 1269 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:17:59,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:17:59,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:17:59,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:17:59,956 INFO L124 PetriNetUnfolderBase]: 337/609 cut-off events. [2024-06-21 16:17:59,956 INFO L125 PetriNetUnfolderBase]: For 27018/27018 co-relation queries the response was YES. [2024-06-21 16:17:59,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4559 conditions, 609 events. 337/609 cut-off events. For 27018/27018 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2591 event pairs, 50 based on Foata normal form. 1/608 useless extension candidates. Maximal degree in co-relation 4489. Up to 484 conditions per place. [2024-06-21 16:17:59,961 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 104 selfloop transitions, 34 changer transitions 0/141 dead transitions. [2024-06-21 16:17:59,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 141 transitions, 1593 flow [2024-06-21 16:17:59,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:17:59,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:17:59,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-21 16:17:59,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 16:17:59,981 INFO L175 Difference]: Start difference. First operand has 141 places, 129 transitions, 1269 flow. Second operand 9 states and 117 transitions. [2024-06-21 16:17:59,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 141 transitions, 1593 flow [2024-06-21 16:18:00,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 141 transitions, 1485 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-21 16:18:00,007 INFO L231 Difference]: Finished difference. Result has 143 places, 129 transitions, 1234 flow [2024-06-21 16:18:00,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1234, PETRI_PLACES=143, PETRI_TRANSITIONS=129} [2024-06-21 16:18:00,008 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 112 predicate places. [2024-06-21 16:18:00,008 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 129 transitions, 1234 flow [2024-06-21 16:18:00,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:00,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:00,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:00,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-21 16:18:00,009 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:00,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:00,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1018052842, now seen corresponding path program 3 times [2024-06-21 16:18:00,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:00,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577270026] [2024-06-21 16:18:00,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:00,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:00,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:00,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:00,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577270026] [2024-06-21 16:18:00,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577270026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:00,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:00,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:18:00,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457636570] [2024-06-21 16:18:00,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:00,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:18:00,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:00,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:18:00,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:18:00,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:18:00,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 129 transitions, 1234 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:00,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:00,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:18:00,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:01,080 INFO L124 PetriNetUnfolderBase]: 338/610 cut-off events. [2024-06-21 16:18:01,080 INFO L125 PetriNetUnfolderBase]: For 28005/28005 co-relation queries the response was YES. [2024-06-21 16:18:01,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4518 conditions, 610 events. 338/610 cut-off events. For 28005/28005 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2597 event pairs, 45 based on Foata normal form. 2/610 useless extension candidates. Maximal degree in co-relation 4447. Up to 534 conditions per place. [2024-06-21 16:18:01,085 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 119 selfloop transitions, 21 changer transitions 0/143 dead transitions. [2024-06-21 16:18:01,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 143 transitions, 1590 flow [2024-06-21 16:18:01,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:18:01,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:18:01,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-21 16:18:01,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-21 16:18:01,086 INFO L175 Difference]: Start difference. First operand has 143 places, 129 transitions, 1234 flow. Second operand 9 states and 111 transitions. [2024-06-21 16:18:01,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 143 transitions, 1590 flow [2024-06-21 16:18:01,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 143 transitions, 1448 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-21 16:18:01,114 INFO L231 Difference]: Finished difference. Result has 142 places, 131 transitions, 1177 flow [2024-06-21 16:18:01,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1092, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1177, PETRI_PLACES=142, PETRI_TRANSITIONS=131} [2024-06-21 16:18:01,115 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 111 predicate places. [2024-06-21 16:18:01,115 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 131 transitions, 1177 flow [2024-06-21 16:18:01,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:01,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:01,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:01,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-21 16:18:01,116 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:01,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:01,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1017813832, now seen corresponding path program 4 times [2024-06-21 16:18:01,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:01,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011089714] [2024-06-21 16:18:01,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:01,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:02,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:02,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:02,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011089714] [2024-06-21 16:18:02,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011089714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:02,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:02,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:18:02,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455030491] [2024-06-21 16:18:02,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:02,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:18:02,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:02,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:18:02,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:18:02,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:18:02,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 131 transitions, 1177 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:02,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:02,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:18:02,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:02,343 INFO L124 PetriNetUnfolderBase]: 336/607 cut-off events. [2024-06-21 16:18:02,344 INFO L125 PetriNetUnfolderBase]: For 27685/27685 co-relation queries the response was YES. [2024-06-21 16:18:02,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4362 conditions, 607 events. 336/607 cut-off events. For 27685/27685 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2605 event pairs, 44 based on Foata normal form. 1/606 useless extension candidates. Maximal degree in co-relation 4292. Up to 513 conditions per place. [2024-06-21 16:18:02,348 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 112 selfloop transitions, 32 changer transitions 0/147 dead transitions. [2024-06-21 16:18:02,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 147 transitions, 1576 flow [2024-06-21 16:18:02,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:18:02,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:18:02,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-21 16:18:02,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-21 16:18:02,350 INFO L175 Difference]: Start difference. First operand has 142 places, 131 transitions, 1177 flow. Second operand 9 states and 112 transitions. [2024-06-21 16:18:02,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 147 transitions, 1576 flow [2024-06-21 16:18:02,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 147 transitions, 1496 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-21 16:18:02,380 INFO L231 Difference]: Finished difference. Result has 145 places, 136 transitions, 1264 flow [2024-06-21 16:18:02,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1116, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1264, PETRI_PLACES=145, PETRI_TRANSITIONS=136} [2024-06-21 16:18:02,382 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 114 predicate places. [2024-06-21 16:18:02,382 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 136 transitions, 1264 flow [2024-06-21 16:18:02,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:02,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:02,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:02,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-21 16:18:02,396 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:02,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:02,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1017813522, now seen corresponding path program 1 times [2024-06-21 16:18:02,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:02,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952305000] [2024-06-21 16:18:02,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:02,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:02,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:03,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:03,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:03,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952305000] [2024-06-21 16:18:03,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952305000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:03,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:03,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:18:03,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178456417] [2024-06-21 16:18:03,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:03,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:18:03,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:03,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:18:03,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:18:03,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 16:18:03,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 136 transitions, 1264 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:03,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:03,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 16:18:03,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:03,725 INFO L124 PetriNetUnfolderBase]: 317/584 cut-off events. [2024-06-21 16:18:03,725 INFO L125 PetriNetUnfolderBase]: For 27705/27709 co-relation queries the response was YES. [2024-06-21 16:18:03,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4221 conditions, 584 events. 317/584 cut-off events. For 27705/27709 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2531 event pairs, 41 based on Foata normal form. 5/587 useless extension candidates. Maximal degree in co-relation 4149. Up to 480 conditions per place. [2024-06-21 16:18:03,729 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 106 selfloop transitions, 17 changer transitions 0/146 dead transitions. [2024-06-21 16:18:03,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 146 transitions, 1534 flow [2024-06-21 16:18:03,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:18:03,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:18:03,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-21 16:18:03,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-21 16:18:03,738 INFO L175 Difference]: Start difference. First operand has 145 places, 136 transitions, 1264 flow. Second operand 9 states and 116 transitions. [2024-06-21 16:18:03,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 146 transitions, 1534 flow [2024-06-21 16:18:03,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 146 transitions, 1469 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-21 16:18:03,768 INFO L231 Difference]: Finished difference. Result has 149 places, 136 transitions, 1238 flow [2024-06-21 16:18:03,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1199, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1238, PETRI_PLACES=149, PETRI_TRANSITIONS=136} [2024-06-21 16:18:03,768 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 118 predicate places. [2024-06-21 16:18:03,769 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 136 transitions, 1238 flow [2024-06-21 16:18:03,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:03,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:03,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:03,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-21 16:18:03,769 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:03,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:03,770 INFO L85 PathProgramCache]: Analyzing trace with hash 678200870, now seen corresponding path program 5 times [2024-06-21 16:18:03,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:03,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855569157] [2024-06-21 16:18:03,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:03,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:03,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:04,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:04,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:04,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855569157] [2024-06-21 16:18:04,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855569157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:04,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:04,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:18:04,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977553476] [2024-06-21 16:18:04,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:04,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:18:04,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:04,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:18:04,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:18:04,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:18:04,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 136 transitions, 1238 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:04,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:04,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:18:04,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:04,841 INFO L124 PetriNetUnfolderBase]: 337/610 cut-off events. [2024-06-21 16:18:04,841 INFO L125 PetriNetUnfolderBase]: For 28850/28850 co-relation queries the response was YES. [2024-06-21 16:18:04,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4422 conditions, 610 events. 337/610 cut-off events. For 28850/28850 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2607 event pairs, 47 based on Foata normal form. 1/609 useless extension candidates. Maximal degree in co-relation 4348. Up to 569 conditions per place. [2024-06-21 16:18:04,845 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 131 selfloop transitions, 14 changer transitions 0/148 dead transitions. [2024-06-21 16:18:04,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 148 transitions, 1601 flow [2024-06-21 16:18:04,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:18:04,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:18:04,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-21 16:18:04,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-21 16:18:04,847 INFO L175 Difference]: Start difference. First operand has 149 places, 136 transitions, 1238 flow. Second operand 9 states and 105 transitions. [2024-06-21 16:18:04,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 148 transitions, 1601 flow [2024-06-21 16:18:04,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 148 transitions, 1552 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-21 16:18:04,875 INFO L231 Difference]: Finished difference. Result has 152 places, 140 transitions, 1286 flow [2024-06-21 16:18:04,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1189, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1286, PETRI_PLACES=152, PETRI_TRANSITIONS=140} [2024-06-21 16:18:04,875 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 121 predicate places. [2024-06-21 16:18:04,875 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 140 transitions, 1286 flow [2024-06-21 16:18:04,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:04,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:04,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:04,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-21 16:18:04,876 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:04,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:04,876 INFO L85 PathProgramCache]: Analyzing trace with hash 668072922, now seen corresponding path program 7 times [2024-06-21 16:18:04,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:04,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376073109] [2024-06-21 16:18:04,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:04,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:04,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:05,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:05,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:05,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376073109] [2024-06-21 16:18:05,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376073109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:05,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:05,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:18:05,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805133389] [2024-06-21 16:18:05,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:05,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:18:05,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:05,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:18:05,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:18:05,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:18:05,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 140 transitions, 1286 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:05,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:05,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:18:05,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:05,866 INFO L124 PetriNetUnfolderBase]: 345/624 cut-off events. [2024-06-21 16:18:05,866 INFO L125 PetriNetUnfolderBase]: For 31782/31782 co-relation queries the response was YES. [2024-06-21 16:18:05,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4624 conditions, 624 events. 345/624 cut-off events. For 31782/31782 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2684 event pairs, 54 based on Foata normal form. 1/619 useless extension candidates. Maximal degree in co-relation 4548. Up to 419 conditions per place. [2024-06-21 16:18:05,870 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 89 selfloop transitions, 63 changer transitions 0/155 dead transitions. [2024-06-21 16:18:05,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 155 transitions, 1794 flow [2024-06-21 16:18:05,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:18:05,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:18:05,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-21 16:18:05,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 16:18:05,872 INFO L175 Difference]: Start difference. First operand has 152 places, 140 transitions, 1286 flow. Second operand 9 states and 117 transitions. [2024-06-21 16:18:05,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 155 transitions, 1794 flow [2024-06-21 16:18:05,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 155 transitions, 1731 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-21 16:18:05,922 INFO L231 Difference]: Finished difference. Result has 156 places, 145 transitions, 1486 flow [2024-06-21 16:18:05,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1223, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1486, PETRI_PLACES=156, PETRI_TRANSITIONS=145} [2024-06-21 16:18:05,926 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 125 predicate places. [2024-06-21 16:18:05,927 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 145 transitions, 1486 flow [2024-06-21 16:18:05,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:05,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:05,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:05,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-21 16:18:05,928 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:05,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:05,929 INFO L85 PathProgramCache]: Analyzing trace with hash 668073170, now seen corresponding path program 6 times [2024-06-21 16:18:05,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:05,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554459656] [2024-06-21 16:18:05,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:05,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:05,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:06,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:06,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:06,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554459656] [2024-06-21 16:18:06,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554459656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:06,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:06,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:18:06,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338380090] [2024-06-21 16:18:06,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:06,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:18:06,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:06,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:18:06,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:18:06,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:18:06,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 145 transitions, 1486 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:06,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:06,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:18:06,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:07,184 INFO L124 PetriNetUnfolderBase]: 361/649 cut-off events. [2024-06-21 16:18:07,184 INFO L125 PetriNetUnfolderBase]: For 36942/36942 co-relation queries the response was YES. [2024-06-21 16:18:07,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5173 conditions, 649 events. 361/649 cut-off events. For 36942/36942 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2825 event pairs, 45 based on Foata normal form. 2/646 useless extension candidates. Maximal degree in co-relation 5095. Up to 441 conditions per place. [2024-06-21 16:18:07,190 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 106 selfloop transitions, 57 changer transitions 0/166 dead transitions. [2024-06-21 16:18:07,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 166 transitions, 2168 flow [2024-06-21 16:18:07,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:18:07,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:18:07,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-21 16:18:07,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-21 16:18:07,191 INFO L175 Difference]: Start difference. First operand has 156 places, 145 transitions, 1486 flow. Second operand 9 states and 120 transitions. [2024-06-21 16:18:07,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 166 transitions, 2168 flow [2024-06-21 16:18:07,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 166 transitions, 2084 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-21 16:18:07,234 INFO L231 Difference]: Finished difference. Result has 160 places, 151 transitions, 1627 flow [2024-06-21 16:18:07,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1402, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1627, PETRI_PLACES=160, PETRI_TRANSITIONS=151} [2024-06-21 16:18:07,235 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 129 predicate places. [2024-06-21 16:18:07,235 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 151 transitions, 1627 flow [2024-06-21 16:18:07,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:07,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:07,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:07,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-21 16:18:07,236 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:07,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:07,236 INFO L85 PathProgramCache]: Analyzing trace with hash 391025240, now seen corresponding path program 7 times [2024-06-21 16:18:07,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:07,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122194472] [2024-06-21 16:18:07,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:07,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:07,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:08,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:08,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:08,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122194472] [2024-06-21 16:18:08,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122194472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:08,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:08,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:18:08,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174424416] [2024-06-21 16:18:08,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:08,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:18:08,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:08,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:18:08,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:18:08,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:18:08,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 151 transitions, 1627 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:08,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:08,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:18:08,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:08,305 INFO L124 PetriNetUnfolderBase]: 362/651 cut-off events. [2024-06-21 16:18:08,305 INFO L125 PetriNetUnfolderBase]: For 37684/37684 co-relation queries the response was YES. [2024-06-21 16:18:08,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5269 conditions, 651 events. 362/651 cut-off events. For 37684/37684 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2831 event pairs, 45 based on Foata normal form. 2/648 useless extension candidates. Maximal degree in co-relation 5189. Up to 444 conditions per place. [2024-06-21 16:18:08,310 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 107 selfloop transitions, 57 changer transitions 0/167 dead transitions. [2024-06-21 16:18:08,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 167 transitions, 2239 flow [2024-06-21 16:18:08,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:18:08,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:18:08,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-21 16:18:08,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201388888888889 [2024-06-21 16:18:08,311 INFO L175 Difference]: Start difference. First operand has 160 places, 151 transitions, 1627 flow. Second operand 9 states and 121 transitions. [2024-06-21 16:18:08,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 167 transitions, 2239 flow [2024-06-21 16:18:08,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 167 transitions, 2152 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-21 16:18:08,359 INFO L231 Difference]: Finished difference. Result has 165 places, 153 transitions, 1697 flow [2024-06-21 16:18:08,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1548, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1697, PETRI_PLACES=165, PETRI_TRANSITIONS=153} [2024-06-21 16:18:08,359 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 134 predicate places. [2024-06-21 16:18:08,359 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 153 transitions, 1697 flow [2024-06-21 16:18:08,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:08,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:08,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:08,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-21 16:18:08,362 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:08,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:08,363 INFO L85 PathProgramCache]: Analyzing trace with hash 382981670, now seen corresponding path program 8 times [2024-06-21 16:18:08,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:08,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485591838] [2024-06-21 16:18:08,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:08,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:08,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:09,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:09,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:09,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485591838] [2024-06-21 16:18:09,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485591838] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:09,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:09,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:18:09,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113568699] [2024-06-21 16:18:09,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:09,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:18:09,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:09,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:18:09,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:18:09,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:18:09,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 153 transitions, 1697 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:09,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:09,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:18:09,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:09,375 INFO L124 PetriNetUnfolderBase]: 369/663 cut-off events. [2024-06-21 16:18:09,375 INFO L125 PetriNetUnfolderBase]: For 39198/39198 co-relation queries the response was YES. [2024-06-21 16:18:09,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5417 conditions, 663 events. 369/663 cut-off events. For 39198/39198 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2904 event pairs, 49 based on Foata normal form. 2/660 useless extension candidates. Maximal degree in co-relation 5335. Up to 550 conditions per place. [2024-06-21 16:18:09,380 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 132 selfloop transitions, 32 changer transitions 0/167 dead transitions. [2024-06-21 16:18:09,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 167 transitions, 2211 flow [2024-06-21 16:18:09,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:18:09,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:18:09,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-21 16:18:09,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-21 16:18:09,382 INFO L175 Difference]: Start difference. First operand has 165 places, 153 transitions, 1697 flow. Second operand 9 states and 115 transitions. [2024-06-21 16:18:09,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 167 transitions, 2211 flow [2024-06-21 16:18:09,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 167 transitions, 2086 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-21 16:18:09,433 INFO L231 Difference]: Finished difference. Result has 168 places, 155 transitions, 1684 flow [2024-06-21 16:18:09,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1576, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1684, PETRI_PLACES=168, PETRI_TRANSITIONS=155} [2024-06-21 16:18:09,434 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 137 predicate places. [2024-06-21 16:18:09,434 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 155 transitions, 1684 flow [2024-06-21 16:18:09,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:09,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:09,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:09,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-21 16:18:09,434 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:09,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:09,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1304440134, now seen corresponding path program 2 times [2024-06-21 16:18:09,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:09,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731843418] [2024-06-21 16:18:09,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:09,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:10,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:10,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:10,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731843418] [2024-06-21 16:18:10,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731843418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:10,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:10,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:18:10,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163753769] [2024-06-21 16:18:10,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:10,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:18:10,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:10,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:18:10,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:18:10,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 16:18:10,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 155 transitions, 1684 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:10,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:10,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 16:18:10,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:10,612 INFO L124 PetriNetUnfolderBase]: 348/637 cut-off events. [2024-06-21 16:18:10,613 INFO L125 PetriNetUnfolderBase]: For 38215/38219 co-relation queries the response was YES. [2024-06-21 16:18:10,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5102 conditions, 637 events. 348/637 cut-off events. For 38215/38219 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2829 event pairs, 44 based on Foata normal form. 5/638 useless extension candidates. Maximal degree in co-relation 5019. Up to 509 conditions per place. [2024-06-21 16:18:10,618 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 114 selfloop transitions, 20 changer transitions 0/163 dead transitions. [2024-06-21 16:18:10,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 163 transitions, 1970 flow [2024-06-21 16:18:10,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:18:10,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:18:10,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-21 16:18:10,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-21 16:18:10,619 INFO L175 Difference]: Start difference. First operand has 168 places, 155 transitions, 1684 flow. Second operand 9 states and 115 transitions. [2024-06-21 16:18:10,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 163 transitions, 1970 flow [2024-06-21 16:18:10,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 163 transitions, 1802 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-21 16:18:10,670 INFO L231 Difference]: Finished difference. Result has 168 places, 155 transitions, 1561 flow [2024-06-21 16:18:10,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1561, PETRI_PLACES=168, PETRI_TRANSITIONS=155} [2024-06-21 16:18:10,671 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 137 predicate places. [2024-06-21 16:18:10,671 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 155 transitions, 1561 flow [2024-06-21 16:18:10,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:10,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:10,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:10,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-21 16:18:10,672 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:10,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:10,672 INFO L85 PathProgramCache]: Analyzing trace with hash 382973300, now seen corresponding path program 9 times [2024-06-21 16:18:10,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:10,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141604040] [2024-06-21 16:18:10,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:10,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:11,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:11,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:11,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141604040] [2024-06-21 16:18:11,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141604040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:11,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:11,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:18:11,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501181145] [2024-06-21 16:18:11,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:11,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:18:11,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:11,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:18:11,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:18:11,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:18:11,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 155 transitions, 1561 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:11,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:11,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:18:11,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:11,751 INFO L124 PetriNetUnfolderBase]: 372/668 cut-off events. [2024-06-21 16:18:11,751 INFO L125 PetriNetUnfolderBase]: For 40089/40089 co-relation queries the response was YES. [2024-06-21 16:18:11,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5193 conditions, 668 events. 372/668 cut-off events. For 40089/40089 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2935 event pairs, 49 based on Foata normal form. 2/665 useless extension candidates. Maximal degree in co-relation 5111. Up to 553 conditions per place. [2024-06-21 16:18:11,756 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 134 selfloop transitions, 33 changer transitions 0/170 dead transitions. [2024-06-21 16:18:11,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 170 transitions, 2087 flow [2024-06-21 16:18:11,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:18:11,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:18:11,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-21 16:18:11,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 16:18:11,760 INFO L175 Difference]: Start difference. First operand has 168 places, 155 transitions, 1561 flow. Second operand 9 states and 117 transitions. [2024-06-21 16:18:11,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 170 transitions, 2087 flow [2024-06-21 16:18:11,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 170 transitions, 2025 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-21 16:18:11,810 INFO L231 Difference]: Finished difference. Result has 169 places, 157 transitions, 1602 flow [2024-06-21 16:18:11,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1499, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1602, PETRI_PLACES=169, PETRI_TRANSITIONS=157} [2024-06-21 16:18:11,810 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 138 predicate places. [2024-06-21 16:18:11,810 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 157 transitions, 1602 flow [2024-06-21 16:18:11,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:11,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:11,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:11,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-21 16:18:11,811 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:11,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:11,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1304686212, now seen corresponding path program 8 times [2024-06-21 16:18:11,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:11,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417890466] [2024-06-21 16:18:11,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:11,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:12,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:12,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:12,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417890466] [2024-06-21 16:18:12,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417890466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:12,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:12,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:18:12,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26838527] [2024-06-21 16:18:12,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:12,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:18:12,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:12,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:18:12,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:18:12,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:18:12,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 157 transitions, 1602 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:12,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:12,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:18:12,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:12,757 INFO L124 PetriNetUnfolderBase]: 373/671 cut-off events. [2024-06-21 16:18:12,757 INFO L125 PetriNetUnfolderBase]: For 40791/40791 co-relation queries the response was YES. [2024-06-21 16:18:12,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5228 conditions, 671 events. 373/671 cut-off events. For 40791/40791 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2956 event pairs, 57 based on Foata normal form. 2/667 useless extension candidates. Maximal degree in co-relation 5145. Up to 536 conditions per place. [2024-06-21 16:18:12,762 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 130 selfloop transitions, 36 changer transitions 0/169 dead transitions. [2024-06-21 16:18:12,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 169 transitions, 2018 flow [2024-06-21 16:18:12,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:18:12,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:18:12,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-21 16:18:12,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-21 16:18:12,763 INFO L175 Difference]: Start difference. First operand has 169 places, 157 transitions, 1602 flow. Second operand 9 states and 114 transitions. [2024-06-21 16:18:12,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 169 transitions, 2018 flow [2024-06-21 16:18:12,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 169 transitions, 1942 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-21 16:18:12,818 INFO L231 Difference]: Finished difference. Result has 172 places, 159 transitions, 1646 flow [2024-06-21 16:18:12,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1526, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1646, PETRI_PLACES=172, PETRI_TRANSITIONS=159} [2024-06-21 16:18:12,819 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 141 predicate places. [2024-06-21 16:18:12,819 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 159 transitions, 1646 flow [2024-06-21 16:18:12,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:12,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:12,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:12,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-21 16:18:12,820 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:12,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:12,820 INFO L85 PathProgramCache]: Analyzing trace with hash 382742412, now seen corresponding path program 9 times [2024-06-21 16:18:12,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:12,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998167476] [2024-06-21 16:18:12,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:12,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:12,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:13,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:13,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:13,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998167476] [2024-06-21 16:18:13,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998167476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:13,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:13,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:18:13,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274176681] [2024-06-21 16:18:13,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:13,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:18:13,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:13,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:18:13,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:18:13,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:18:13,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 159 transitions, 1646 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:13,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:13,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:18:13,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:13,885 INFO L124 PetriNetUnfolderBase]: 376/676 cut-off events. [2024-06-21 16:18:13,885 INFO L125 PetriNetUnfolderBase]: For 41183/41183 co-relation queries the response was YES. [2024-06-21 16:18:13,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5297 conditions, 676 events. 376/676 cut-off events. For 41183/41183 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2975 event pairs, 54 based on Foata normal form. 1/671 useless extension candidates. Maximal degree in co-relation 5213. Up to 535 conditions per place. [2024-06-21 16:18:13,890 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 128 selfloop transitions, 43 changer transitions 0/174 dead transitions. [2024-06-21 16:18:13,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 174 transitions, 2108 flow [2024-06-21 16:18:13,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:18:13,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:18:13,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-21 16:18:13,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-21 16:18:13,891 INFO L175 Difference]: Start difference. First operand has 172 places, 159 transitions, 1646 flow. Second operand 10 states and 127 transitions. [2024-06-21 16:18:13,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 174 transitions, 2108 flow [2024-06-21 16:18:13,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 174 transitions, 1994 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-21 16:18:13,962 INFO L231 Difference]: Finished difference. Result has 175 places, 162 transitions, 1680 flow [2024-06-21 16:18:13,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1534, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1680, PETRI_PLACES=175, PETRI_TRANSITIONS=162} [2024-06-21 16:18:13,963 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 144 predicate places. [2024-06-21 16:18:13,963 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 162 transitions, 1680 flow [2024-06-21 16:18:13,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:13,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:13,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:13,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-21 16:18:13,963 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:13,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:13,964 INFO L85 PathProgramCache]: Analyzing trace with hash 382973052, now seen corresponding path program 10 times [2024-06-21 16:18:13,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:13,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78858019] [2024-06-21 16:18:13,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:13,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:14,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:14,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:14,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78858019] [2024-06-21 16:18:14,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78858019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:14,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:14,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:18:14,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121005048] [2024-06-21 16:18:14,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:14,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:18:14,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:14,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:18:14,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:18:14,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:18:14,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 162 transitions, 1680 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:14,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:14,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:18:14,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:14,997 INFO L124 PetriNetUnfolderBase]: 374/673 cut-off events. [2024-06-21 16:18:14,997 INFO L125 PetriNetUnfolderBase]: For 41252/41252 co-relation queries the response was YES. [2024-06-21 16:18:15,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5210 conditions, 673 events. 374/673 cut-off events. For 41252/41252 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2957 event pairs, 57 based on Foata normal form. 1/668 useless extension candidates. Maximal degree in co-relation 5125. Up to 523 conditions per place. [2024-06-21 16:18:15,002 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 125 selfloop transitions, 44 changer transitions 0/172 dead transitions. [2024-06-21 16:18:15,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 172 transitions, 2064 flow [2024-06-21 16:18:15,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:18:15,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:18:15,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-21 16:18:15,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-21 16:18:15,004 INFO L175 Difference]: Start difference. First operand has 175 places, 162 transitions, 1680 flow. Second operand 9 states and 118 transitions. [2024-06-21 16:18:15,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 172 transitions, 2064 flow [2024-06-21 16:18:15,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 172 transitions, 1967 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-21 16:18:15,058 INFO L231 Difference]: Finished difference. Result has 178 places, 162 transitions, 1676 flow [2024-06-21 16:18:15,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1583, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1676, PETRI_PLACES=178, PETRI_TRANSITIONS=162} [2024-06-21 16:18:15,059 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 147 predicate places. [2024-06-21 16:18:15,059 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 162 transitions, 1676 flow [2024-06-21 16:18:15,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:15,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:15,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:15,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-21 16:18:15,059 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:15,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:15,060 INFO L85 PathProgramCache]: Analyzing trace with hash 382742660, now seen corresponding path program 10 times [2024-06-21 16:18:15,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:15,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916289685] [2024-06-21 16:18:15,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:15,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:15,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:15,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:15,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916289685] [2024-06-21 16:18:15,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916289685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:15,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:15,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:18:15,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431930774] [2024-06-21 16:18:15,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:15,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:18:15,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:15,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:18:15,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:18:15,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:18:15,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 162 transitions, 1676 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:15,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:15,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:18:15,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:16,077 INFO L124 PetriNetUnfolderBase]: 370/666 cut-off events. [2024-06-21 16:18:16,078 INFO L125 PetriNetUnfolderBase]: For 41358/41358 co-relation queries the response was YES. [2024-06-21 16:18:16,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5075 conditions, 666 events. 370/666 cut-off events. For 41358/41358 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2927 event pairs, 48 based on Foata normal form. 2/663 useless extension candidates. Maximal degree in co-relation 4988. Up to 580 conditions per place. [2024-06-21 16:18:16,083 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 144 selfloop transitions, 25 changer transitions 0/172 dead transitions. [2024-06-21 16:18:16,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 172 transitions, 2054 flow [2024-06-21 16:18:16,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:18:16,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:18:16,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-21 16:18:16,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-21 16:18:16,084 INFO L175 Difference]: Start difference. First operand has 178 places, 162 transitions, 1676 flow. Second operand 9 states and 110 transitions. [2024-06-21 16:18:16,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 172 transitions, 2054 flow [2024-06-21 16:18:16,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 172 transitions, 1807 flow, removed 27 selfloop flow, removed 11 redundant places. [2024-06-21 16:18:16,138 INFO L231 Difference]: Finished difference. Result has 176 places, 162 transitions, 1484 flow [2024-06-21 16:18:16,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1429, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1484, PETRI_PLACES=176, PETRI_TRANSITIONS=162} [2024-06-21 16:18:16,138 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 145 predicate places. [2024-06-21 16:18:16,138 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 162 transitions, 1484 flow [2024-06-21 16:18:16,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:16,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:16,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:16,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-21 16:18:16,139 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:16,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:16,139 INFO L85 PathProgramCache]: Analyzing trace with hash -2128706908, now seen corresponding path program 1 times [2024-06-21 16:18:16,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:16,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292849302] [2024-06-21 16:18:16,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:16,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:16,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:16,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:16,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:16,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292849302] [2024-06-21 16:18:16,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292849302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:16,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:16,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:18:16,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289266286] [2024-06-21 16:18:16,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:16,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:18:16,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:16,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:18:16,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:18:17,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:18:17,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 162 transitions, 1484 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:17,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:17,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:18:17,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:17,417 INFO L124 PetriNetUnfolderBase]: 373/672 cut-off events. [2024-06-21 16:18:17,418 INFO L125 PetriNetUnfolderBase]: For 41110/41110 co-relation queries the response was YES. [2024-06-21 16:18:17,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4875 conditions, 672 events. 373/672 cut-off events. For 41110/41110 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2958 event pairs, 39 based on Foata normal form. 1/671 useless extension candidates. Maximal degree in co-relation 4790. Up to 578 conditions per place. [2024-06-21 16:18:17,422 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 153 selfloop transitions, 27 changer transitions 0/183 dead transitions. [2024-06-21 16:18:17,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 183 transitions, 1942 flow [2024-06-21 16:18:17,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:18:17,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:18:17,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-21 16:18:17,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-21 16:18:17,424 INFO L175 Difference]: Start difference. First operand has 176 places, 162 transitions, 1484 flow. Second operand 10 states and 127 transitions. [2024-06-21 16:18:17,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 183 transitions, 1942 flow [2024-06-21 16:18:17,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 183 transitions, 1874 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-21 16:18:17,471 INFO L231 Difference]: Finished difference. Result has 177 places, 164 transitions, 1517 flow [2024-06-21 16:18:17,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1416, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1517, PETRI_PLACES=177, PETRI_TRANSITIONS=164} [2024-06-21 16:18:17,472 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 146 predicate places. [2024-06-21 16:18:17,472 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 164 transitions, 1517 flow [2024-06-21 16:18:17,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:17,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:17,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:17,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-21 16:18:17,472 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:17,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:17,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1391723182, now seen corresponding path program 2 times [2024-06-21 16:18:17,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:17,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752870525] [2024-06-21 16:18:17,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:17,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:17,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:18,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:18,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:18,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752870525] [2024-06-21 16:18:18,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752870525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:18,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:18,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:18:18,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714491733] [2024-06-21 16:18:18,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:18,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:18:18,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:18,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:18:18,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:18:18,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:18:18,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 164 transitions, 1517 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:18,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:18,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:18:18,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:18,595 INFO L124 PetriNetUnfolderBase]: 376/679 cut-off events. [2024-06-21 16:18:18,596 INFO L125 PetriNetUnfolderBase]: For 42756/42756 co-relation queries the response was YES. [2024-06-21 16:18:18,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4985 conditions, 679 events. 376/679 cut-off events. For 42756/42756 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3023 event pairs, 39 based on Foata normal form. 1/678 useless extension candidates. Maximal degree in co-relation 4899. Up to 577 conditions per place. [2024-06-21 16:18:18,600 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 150 selfloop transitions, 30 changer transitions 0/183 dead transitions. [2024-06-21 16:18:18,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 183 transitions, 1981 flow [2024-06-21 16:18:18,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:18:18,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:18:18,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 16:18:18,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-21 16:18:18,602 INFO L175 Difference]: Start difference. First operand has 177 places, 164 transitions, 1517 flow. Second operand 10 states and 126 transitions. [2024-06-21 16:18:18,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 183 transitions, 1981 flow [2024-06-21 16:18:18,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 183 transitions, 1896 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-21 16:18:18,655 INFO L231 Difference]: Finished difference. Result has 179 places, 166 transitions, 1543 flow [2024-06-21 16:18:18,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1432, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1543, PETRI_PLACES=179, PETRI_TRANSITIONS=166} [2024-06-21 16:18:18,656 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 148 predicate places. [2024-06-21 16:18:18,656 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 166 transitions, 1543 flow [2024-06-21 16:18:18,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:18,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:18,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:18,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-21 16:18:18,656 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:18,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:18,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1335050691, now seen corresponding path program 1 times [2024-06-21 16:18:18,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:18,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871023903] [2024-06-21 16:18:18,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:18,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:19,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:19,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:19,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871023903] [2024-06-21 16:18:19,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871023903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:19,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:19,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:18:19,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763946067] [2024-06-21 16:18:19,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:19,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:18:19,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:19,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:18:19,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:18:19,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:18:19,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 166 transitions, 1543 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:19,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:19,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:18:19,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:19,498 INFO L124 PetriNetUnfolderBase]: 388/699 cut-off events. [2024-06-21 16:18:19,498 INFO L125 PetriNetUnfolderBase]: For 49159/49159 co-relation queries the response was YES. [2024-06-21 16:18:19,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5155 conditions, 699 events. 388/699 cut-off events. For 49159/49159 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3134 event pairs, 38 based on Foata normal form. 4/701 useless extension candidates. Maximal degree in co-relation 5068. Up to 588 conditions per place. [2024-06-21 16:18:19,503 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 153 selfloop transitions, 31 changer transitions 0/187 dead transitions. [2024-06-21 16:18:19,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 187 transitions, 2029 flow [2024-06-21 16:18:19,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:18:19,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:18:19,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-21 16:18:19,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-21 16:18:19,505 INFO L175 Difference]: Start difference. First operand has 179 places, 166 transitions, 1543 flow. Second operand 10 states and 128 transitions. [2024-06-21 16:18:19,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 187 transitions, 2029 flow [2024-06-21 16:18:19,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 187 transitions, 1934 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-21 16:18:19,561 INFO L231 Difference]: Finished difference. Result has 181 places, 169 transitions, 1566 flow [2024-06-21 16:18:19,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1448, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1566, PETRI_PLACES=181, PETRI_TRANSITIONS=169} [2024-06-21 16:18:19,562 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 150 predicate places. [2024-06-21 16:18:19,562 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 169 transitions, 1566 flow [2024-06-21 16:18:19,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:19,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:19,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:19,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-21 16:18:19,562 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:19,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:19,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1276235862, now seen corresponding path program 3 times [2024-06-21 16:18:19,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:19,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62531888] [2024-06-21 16:18:19,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:19,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:20,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:20,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:20,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62531888] [2024-06-21 16:18:20,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62531888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:20,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:20,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:18:20,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213865825] [2024-06-21 16:18:20,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:20,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:18:20,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:20,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:18:20,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:18:20,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:18:20,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 169 transitions, 1566 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:20,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:20,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:18:20,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:20,631 INFO L124 PetriNetUnfolderBase]: 396/717 cut-off events. [2024-06-21 16:18:20,631 INFO L125 PetriNetUnfolderBase]: For 48413/48413 co-relation queries the response was YES. [2024-06-21 16:18:20,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5414 conditions, 717 events. 396/717 cut-off events. For 48413/48413 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3260 event pairs, 41 based on Foata normal form. 1/716 useless extension candidates. Maximal degree in co-relation 5326. Up to 578 conditions per place. [2024-06-21 16:18:20,636 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 145 selfloop transitions, 40 changer transitions 0/188 dead transitions. [2024-06-21 16:18:20,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 188 transitions, 2194 flow [2024-06-21 16:18:20,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:18:20,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:18:20,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-21 16:18:20,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-21 16:18:20,638 INFO L175 Difference]: Start difference. First operand has 181 places, 169 transitions, 1566 flow. Second operand 10 states and 127 transitions. [2024-06-21 16:18:20,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 188 transitions, 2194 flow [2024-06-21 16:18:20,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 188 transitions, 2098 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-21 16:18:20,703 INFO L231 Difference]: Finished difference. Result has 183 places, 173 transitions, 1655 flow [2024-06-21 16:18:20,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1470, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1655, PETRI_PLACES=183, PETRI_TRANSITIONS=173} [2024-06-21 16:18:20,704 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 152 predicate places. [2024-06-21 16:18:20,704 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 173 transitions, 1655 flow [2024-06-21 16:18:20,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:20,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:20,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:20,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-21 16:18:20,705 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:20,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:20,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1276235645, now seen corresponding path program 2 times [2024-06-21 16:18:20,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:20,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204519995] [2024-06-21 16:18:20,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:20,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:20,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:21,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:21,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:21,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204519995] [2024-06-21 16:18:21,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204519995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:21,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:21,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:18:21,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485190610] [2024-06-21 16:18:21,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:21,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:18:21,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:21,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:18:21,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:18:21,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:18:21,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 173 transitions, 1655 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:21,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:21,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:18:21,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:21,689 INFO L124 PetriNetUnfolderBase]: 432/775 cut-off events. [2024-06-21 16:18:21,689 INFO L125 PetriNetUnfolderBase]: For 61385/61385 co-relation queries the response was YES. [2024-06-21 16:18:21,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6152 conditions, 775 events. 432/775 cut-off events. For 61385/61385 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3576 event pairs, 41 based on Foata normal form. 2/775 useless extension candidates. Maximal degree in co-relation 6063. Up to 591 conditions per place. [2024-06-21 16:18:21,695 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 150 selfloop transitions, 46 changer transitions 0/199 dead transitions. [2024-06-21 16:18:21,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 199 transitions, 2467 flow [2024-06-21 16:18:21,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:18:21,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:18:21,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-21 16:18:21,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-21 16:18:21,697 INFO L175 Difference]: Start difference. First operand has 183 places, 173 transitions, 1655 flow. Second operand 10 states and 133 transitions. [2024-06-21 16:18:21,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 199 transitions, 2467 flow [2024-06-21 16:18:21,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 199 transitions, 2383 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-21 16:18:21,768 INFO L231 Difference]: Finished difference. Result has 188 places, 181 transitions, 1814 flow [2024-06-21 16:18:21,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1571, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1814, PETRI_PLACES=188, PETRI_TRANSITIONS=181} [2024-06-21 16:18:21,768 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 157 predicate places. [2024-06-21 16:18:21,768 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 181 transitions, 1814 flow [2024-06-21 16:18:21,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:21,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:21,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:21,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-21 16:18:21,769 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:21,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:21,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1276227926, now seen corresponding path program 1 times [2024-06-21 16:18:21,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:21,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138882596] [2024-06-21 16:18:21,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:21,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:22,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:22,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:22,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138882596] [2024-06-21 16:18:22,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138882596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:22,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:22,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:18:22,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335881952] [2024-06-21 16:18:22,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:22,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:18:22,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:22,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:18:22,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:18:22,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:18:22,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 181 transitions, 1814 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:22,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:22,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:18:22,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:22,877 INFO L124 PetriNetUnfolderBase]: 430/771 cut-off events. [2024-06-21 16:18:22,877 INFO L125 PetriNetUnfolderBase]: For 60732/60732 co-relation queries the response was YES. [2024-06-21 16:18:22,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6266 conditions, 771 events. 430/771 cut-off events. For 60732/60732 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3544 event pairs, 40 based on Foata normal form. 1/770 useless extension candidates. Maximal degree in co-relation 6174. Up to 695 conditions per place. [2024-06-21 16:18:22,883 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 170 selfloop transitions, 21 changer transitions 0/194 dead transitions. [2024-06-21 16:18:22,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 194 transitions, 2236 flow [2024-06-21 16:18:22,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:18:22,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:18:22,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-21 16:18:22,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-21 16:18:22,884 INFO L175 Difference]: Start difference. First operand has 188 places, 181 transitions, 1814 flow. Second operand 9 states and 112 transitions. [2024-06-21 16:18:22,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 194 transitions, 2236 flow [2024-06-21 16:18:22,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 194 transitions, 2137 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-21 16:18:22,963 INFO L231 Difference]: Finished difference. Result has 192 places, 181 transitions, 1763 flow [2024-06-21 16:18:22,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1715, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1763, PETRI_PLACES=192, PETRI_TRANSITIONS=181} [2024-06-21 16:18:22,965 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 161 predicate places. [2024-06-21 16:18:22,965 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 181 transitions, 1763 flow [2024-06-21 16:18:22,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:22,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:22,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:22,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-21 16:18:22,966 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:22,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:22,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1479150471, now seen corresponding path program 3 times [2024-06-21 16:18:22,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:22,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723241574] [2024-06-21 16:18:22,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:22,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:23,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:23,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:23,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723241574] [2024-06-21 16:18:23,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723241574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:23,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:23,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:18:23,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041614796] [2024-06-21 16:18:23,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:23,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:18:23,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:23,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:18:23,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:18:23,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:18:23,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 181 transitions, 1763 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:23,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:23,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:18:23,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:24,231 INFO L124 PetriNetUnfolderBase]: 426/766 cut-off events. [2024-06-21 16:18:24,231 INFO L125 PetriNetUnfolderBase]: For 60260/60260 co-relation queries the response was YES. [2024-06-21 16:18:24,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6040 conditions, 766 events. 426/766 cut-off events. For 60260/60260 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3535 event pairs, 42 based on Foata normal form. 2/766 useless extension candidates. Maximal degree in co-relation 5947. Up to 587 conditions per place. [2024-06-21 16:18:24,237 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 146 selfloop transitions, 48 changer transitions 0/197 dead transitions. [2024-06-21 16:18:24,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 197 transitions, 2327 flow [2024-06-21 16:18:24,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:18:24,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:18:24,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-21 16:18:24,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-21 16:18:24,238 INFO L175 Difference]: Start difference. First operand has 192 places, 181 transitions, 1763 flow. Second operand 10 states and 131 transitions. [2024-06-21 16:18:24,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 197 transitions, 2327 flow [2024-06-21 16:18:24,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 197 transitions, 2254 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-21 16:18:24,317 INFO L231 Difference]: Finished difference. Result has 194 places, 181 transitions, 1792 flow [2024-06-21 16:18:24,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1690, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1792, PETRI_PLACES=194, PETRI_TRANSITIONS=181} [2024-06-21 16:18:24,318 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 163 predicate places. [2024-06-21 16:18:24,318 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 181 transitions, 1792 flow [2024-06-21 16:18:24,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:24,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:24,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:24,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-21 16:18:24,319 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:24,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:24,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1478941004, now seen corresponding path program 4 times [2024-06-21 16:18:24,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:24,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990417454] [2024-06-21 16:18:24,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:24,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:24,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:25,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:25,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:25,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990417454] [2024-06-21 16:18:25,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990417454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:25,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:25,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:18:25,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249448215] [2024-06-21 16:18:25,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:25,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:18:25,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:25,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:18:25,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:18:25,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:18:25,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 181 transitions, 1792 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:25,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:25,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:18:25,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:25,666 INFO L124 PetriNetUnfolderBase]: 424/763 cut-off events. [2024-06-21 16:18:25,667 INFO L125 PetriNetUnfolderBase]: For 59088/59088 co-relation queries the response was YES. [2024-06-21 16:18:25,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6039 conditions, 763 events. 424/763 cut-off events. For 59088/59088 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3507 event pairs, 42 based on Foata normal form. 1/762 useless extension candidates. Maximal degree in co-relation 5945. Up to 647 conditions per place. [2024-06-21 16:18:25,672 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 160 selfloop transitions, 32 changer transitions 0/195 dead transitions. [2024-06-21 16:18:25,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 195 transitions, 2212 flow [2024-06-21 16:18:25,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:18:25,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:18:25,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 16:18:25,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-21 16:18:25,673 INFO L175 Difference]: Start difference. First operand has 194 places, 181 transitions, 1792 flow. Second operand 10 states and 126 transitions. [2024-06-21 16:18:25,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 195 transitions, 2212 flow [2024-06-21 16:18:25,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 195 transitions, 2090 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-21 16:18:25,757 INFO L231 Difference]: Finished difference. Result has 196 places, 181 transitions, 1739 flow [2024-06-21 16:18:25,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1670, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1739, PETRI_PLACES=196, PETRI_TRANSITIONS=181} [2024-06-21 16:18:25,757 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2024-06-21 16:18:25,757 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 181 transitions, 1739 flow [2024-06-21 16:18:25,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:25,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:25,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:25,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-21 16:18:25,758 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:25,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:25,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1478941221, now seen corresponding path program 4 times [2024-06-21 16:18:25,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:25,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458424735] [2024-06-21 16:18:25,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:25,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:26,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:26,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:26,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458424735] [2024-06-21 16:18:26,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458424735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:26,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:26,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:18:26,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891955799] [2024-06-21 16:18:26,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:26,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:18:26,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:26,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:18:26,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:18:26,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:18:26,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 181 transitions, 1739 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:26,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:26,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:18:26,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:26,906 INFO L124 PetriNetUnfolderBase]: 416/751 cut-off events. [2024-06-21 16:18:26,906 INFO L125 PetriNetUnfolderBase]: For 58749/58749 co-relation queries the response was YES. [2024-06-21 16:18:26,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5649 conditions, 751 events. 416/751 cut-off events. For 58749/58749 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3457 event pairs, 40 based on Foata normal form. 4/753 useless extension candidates. Maximal degree in co-relation 5554. Up to 626 conditions per place. [2024-06-21 16:18:26,915 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 160 selfloop transitions, 33 changer transitions 0/196 dead transitions. [2024-06-21 16:18:26,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 196 transitions, 2173 flow [2024-06-21 16:18:26,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:18:26,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:18:26,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-21 16:18:26,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-21 16:18:26,921 INFO L175 Difference]: Start difference. First operand has 196 places, 181 transitions, 1739 flow. Second operand 10 states and 128 transitions. [2024-06-21 16:18:26,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 196 transitions, 2173 flow [2024-06-21 16:18:26,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 196 transitions, 2054 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-21 16:18:26,994 INFO L231 Difference]: Finished difference. Result has 197 places, 181 transitions, 1692 flow [2024-06-21 16:18:26,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1620, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1692, PETRI_PLACES=197, PETRI_TRANSITIONS=181} [2024-06-21 16:18:26,995 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 166 predicate places. [2024-06-21 16:18:26,995 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 181 transitions, 1692 flow [2024-06-21 16:18:26,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:26,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:26,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:26,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-21 16:18:26,996 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:26,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:26,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1495075688, now seen corresponding path program 5 times [2024-06-21 16:18:26,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:26,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903868437] [2024-06-21 16:18:26,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:26,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:27,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:27,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:27,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:27,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903868437] [2024-06-21 16:18:27,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903868437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:27,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:27,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:18:27,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889266563] [2024-06-21 16:18:27,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:27,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:18:27,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:27,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:18:27,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:18:28,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:18:28,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 181 transitions, 1692 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:28,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:28,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:18:28,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:28,465 INFO L124 PetriNetUnfolderBase]: 419/758 cut-off events. [2024-06-21 16:18:28,465 INFO L125 PetriNetUnfolderBase]: For 55098/55098 co-relation queries the response was YES. [2024-06-21 16:18:28,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5675 conditions, 758 events. 419/758 cut-off events. For 55098/55098 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3519 event pairs, 44 based on Foata normal form. 1/757 useless extension candidates. Maximal degree in co-relation 5579. Up to 626 conditions per place. [2024-06-21 16:18:28,482 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 158 selfloop transitions, 34 changer transitions 0/195 dead transitions. [2024-06-21 16:18:28,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 195 transitions, 2172 flow [2024-06-21 16:18:28,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:18:28,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:18:28,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-21 16:18:28,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-21 16:18:28,484 INFO L175 Difference]: Start difference. First operand has 197 places, 181 transitions, 1692 flow. Second operand 10 states and 125 transitions. [2024-06-21 16:18:28,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 195 transitions, 2172 flow [2024-06-21 16:18:28,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 195 transitions, 2069 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-21 16:18:28,559 INFO L231 Difference]: Finished difference. Result has 197 places, 183 transitions, 1720 flow [2024-06-21 16:18:28,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1589, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1720, PETRI_PLACES=197, PETRI_TRANSITIONS=183} [2024-06-21 16:18:28,559 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 166 predicate places. [2024-06-21 16:18:28,559 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 183 transitions, 1720 flow [2024-06-21 16:18:28,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:28,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:28,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:28,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-21 16:18:28,560 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:28,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:28,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1495075471, now seen corresponding path program 5 times [2024-06-21 16:18:28,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:28,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160290619] [2024-06-21 16:18:28,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:28,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:28,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:29,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:29,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:29,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160290619] [2024-06-21 16:18:29,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160290619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:29,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:29,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:18:29,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781068074] [2024-06-21 16:18:29,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:29,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:18:29,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:29,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:18:29,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:18:29,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:18:29,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 183 transitions, 1720 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:29,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:29,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:18:29,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:29,744 INFO L124 PetriNetUnfolderBase]: 425/768 cut-off events. [2024-06-21 16:18:29,745 INFO L125 PetriNetUnfolderBase]: For 58982/58982 co-relation queries the response was YES. [2024-06-21 16:18:29,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5771 conditions, 768 events. 425/768 cut-off events. For 58982/58982 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3583 event pairs, 44 based on Foata normal form. 2/768 useless extension candidates. Maximal degree in co-relation 5674. Up to 633 conditions per place. [2024-06-21 16:18:29,750 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 160 selfloop transitions, 35 changer transitions 0/198 dead transitions. [2024-06-21 16:18:29,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 198 transitions, 2210 flow [2024-06-21 16:18:29,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:18:29,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:18:29,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 16:18:29,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-21 16:18:29,752 INFO L175 Difference]: Start difference. First operand has 197 places, 183 transitions, 1720 flow. Second operand 10 states and 126 transitions. [2024-06-21 16:18:29,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 198 transitions, 2210 flow [2024-06-21 16:18:29,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 198 transitions, 2095 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-21 16:18:29,827 INFO L231 Difference]: Finished difference. Result has 199 places, 186 transitions, 1745 flow [2024-06-21 16:18:29,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1605, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1745, PETRI_PLACES=199, PETRI_TRANSITIONS=186} [2024-06-21 16:18:29,827 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 168 predicate places. [2024-06-21 16:18:29,827 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 186 transitions, 1745 flow [2024-06-21 16:18:29,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:29,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:29,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:29,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-21 16:18:29,828 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:29,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:29,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1494866221, now seen corresponding path program 6 times [2024-06-21 16:18:29,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:29,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633392805] [2024-06-21 16:18:29,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:29,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:29,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:30,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:30,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:30,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633392805] [2024-06-21 16:18:30,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633392805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:30,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:30,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:18:30,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327911431] [2024-06-21 16:18:30,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:30,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:18:30,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:30,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:18:30,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:18:30,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:18:30,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 186 transitions, 1745 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:30,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:30,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:18:30,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:30,994 INFO L124 PetriNetUnfolderBase]: 446/802 cut-off events. [2024-06-21 16:18:30,994 INFO L125 PetriNetUnfolderBase]: For 66296/66296 co-relation queries the response was YES. [2024-06-21 16:18:30,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6285 conditions, 802 events. 446/802 cut-off events. For 66296/66296 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3752 event pairs, 44 based on Foata normal form. 2/802 useless extension candidates. Maximal degree in co-relation 6187. Up to 632 conditions per place. [2024-06-21 16:18:31,000 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 160 selfloop transitions, 44 changer transitions 0/207 dead transitions. [2024-06-21 16:18:31,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 207 transitions, 2456 flow [2024-06-21 16:18:31,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:18:31,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:18:31,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-21 16:18:31,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-21 16:18:31,001 INFO L175 Difference]: Start difference. First operand has 199 places, 186 transitions, 1745 flow. Second operand 10 states and 132 transitions. [2024-06-21 16:18:31,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 207 transitions, 2456 flow [2024-06-21 16:18:31,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 207 transitions, 2338 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-21 16:18:31,082 INFO L231 Difference]: Finished difference. Result has 202 places, 191 transitions, 1832 flow [2024-06-21 16:18:31,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1627, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1832, PETRI_PLACES=202, PETRI_TRANSITIONS=191} [2024-06-21 16:18:31,082 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 171 predicate places. [2024-06-21 16:18:31,082 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 191 transitions, 1832 flow [2024-06-21 16:18:31,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:31,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:31,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:31,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-21 16:18:31,083 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:31,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:31,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1487446991, now seen corresponding path program 1 times [2024-06-21 16:18:31,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:31,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151894866] [2024-06-21 16:18:31,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:31,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:31,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:32,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:32,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:32,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151894866] [2024-06-21 16:18:32,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151894866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:32,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:32,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:18:32,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98868833] [2024-06-21 16:18:32,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:32,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:18:32,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:32,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:18:32,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:18:32,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 16:18:32,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 191 transitions, 1832 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:32,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:32,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 16:18:32,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:32,838 INFO L124 PetriNetUnfolderBase]: 427/783 cut-off events. [2024-06-21 16:18:32,838 INFO L125 PetriNetUnfolderBase]: For 70308/70309 co-relation queries the response was YES. [2024-06-21 16:18:32,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6247 conditions, 783 events. 427/783 cut-off events. For 70308/70309 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3768 event pairs, 37 based on Foata normal form. 3/784 useless extension candidates. Maximal degree in co-relation 6147. Up to 645 conditions per place. [2024-06-21 16:18:32,844 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 156 selfloop transitions, 18 changer transitions 0/204 dead transitions. [2024-06-21 16:18:32,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 204 transitions, 2226 flow [2024-06-21 16:18:32,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:18:32,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:18:32,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-21 16:18:32,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-21 16:18:32,845 INFO L175 Difference]: Start difference. First operand has 202 places, 191 transitions, 1832 flow. Second operand 10 states and 127 transitions. [2024-06-21 16:18:32,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 204 transitions, 2226 flow [2024-06-21 16:18:32,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 204 transitions, 2141 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-21 16:18:32,944 INFO L231 Difference]: Finished difference. Result has 206 places, 192 transitions, 1807 flow [2024-06-21 16:18:32,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1747, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1807, PETRI_PLACES=206, PETRI_TRANSITIONS=192} [2024-06-21 16:18:32,945 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 175 predicate places. [2024-06-21 16:18:32,945 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 192 transitions, 1807 flow [2024-06-21 16:18:32,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:32,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:32,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:32,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-21 16:18:32,945 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:32,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:32,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1763604971, now seen corresponding path program 7 times [2024-06-21 16:18:32,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:32,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741610898] [2024-06-21 16:18:32,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:32,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:32,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:33,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:33,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:33,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741610898] [2024-06-21 16:18:33,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741610898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:33,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:33,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:18:33,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876383160] [2024-06-21 16:18:33,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:33,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:18:33,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:33,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:18:33,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:18:33,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:18:33,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 192 transitions, 1807 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:33,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:33,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:18:33,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:34,076 INFO L124 PetriNetUnfolderBase]: 451/812 cut-off events. [2024-06-21 16:18:34,077 INFO L125 PetriNetUnfolderBase]: For 68991/68991 co-relation queries the response was YES. [2024-06-21 16:18:34,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6355 conditions, 812 events. 451/812 cut-off events. For 68991/68991 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3832 event pairs, 44 based on Foata normal form. 2/812 useless extension candidates. Maximal degree in co-relation 6253. Up to 643 conditions per place. [2024-06-21 16:18:34,083 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 162 selfloop transitions, 45 changer transitions 0/210 dead transitions. [2024-06-21 16:18:34,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 210 transitions, 2468 flow [2024-06-21 16:18:34,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:18:34,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:18:34,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-21 16:18:34,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-21 16:18:34,084 INFO L175 Difference]: Start difference. First operand has 206 places, 192 transitions, 1807 flow. Second operand 10 states and 133 transitions. [2024-06-21 16:18:34,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 210 transitions, 2468 flow [2024-06-21 16:18:34,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 210 transitions, 2418 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-21 16:18:34,204 INFO L231 Difference]: Finished difference. Result has 208 places, 194 transitions, 1880 flow [2024-06-21 16:18:34,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1757, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1880, PETRI_PLACES=208, PETRI_TRANSITIONS=194} [2024-06-21 16:18:34,205 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 177 predicate places. [2024-06-21 16:18:34,205 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 194 transitions, 1880 flow [2024-06-21 16:18:34,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:34,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:34,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:34,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-21 16:18:34,205 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:34,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:34,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1082296452, now seen corresponding path program 6 times [2024-06-21 16:18:34,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:34,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449341125] [2024-06-21 16:18:34,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:34,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:34,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:35,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:35,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:35,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449341125] [2024-06-21 16:18:35,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449341125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:35,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:35,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:18:35,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95015720] [2024-06-21 16:18:35,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:35,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:18:35,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:35,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:18:35,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:18:35,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:18:35,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 194 transitions, 1880 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:35,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:35,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:18:35,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:35,587 INFO L124 PetriNetUnfolderBase]: 454/819 cut-off events. [2024-06-21 16:18:35,587 INFO L125 PetriNetUnfolderBase]: For 69206/69206 co-relation queries the response was YES. [2024-06-21 16:18:35,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6502 conditions, 819 events. 454/819 cut-off events. For 69206/69206 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3880 event pairs, 44 based on Foata normal form. 1/818 useless extension candidates. Maximal degree in co-relation 6399. Up to 676 conditions per place. [2024-06-21 16:18:35,594 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 167 selfloop transitions, 38 changer transitions 0/208 dead transitions. [2024-06-21 16:18:35,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 208 transitions, 2400 flow [2024-06-21 16:18:35,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:18:35,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:18:35,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-21 16:18:35,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-21 16:18:35,595 INFO L175 Difference]: Start difference. First operand has 208 places, 194 transitions, 1880 flow. Second operand 10 states and 127 transitions. [2024-06-21 16:18:35,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 208 transitions, 2400 flow [2024-06-21 16:18:35,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 208 transitions, 2310 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-21 16:18:35,682 INFO L231 Difference]: Finished difference. Result has 211 places, 196 transitions, 1937 flow [2024-06-21 16:18:35,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1790, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1937, PETRI_PLACES=211, PETRI_TRANSITIONS=196} [2024-06-21 16:18:35,683 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 180 predicate places. [2024-06-21 16:18:35,683 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 196 transitions, 1937 flow [2024-06-21 16:18:35,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:35,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:35,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:35,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-21 16:18:35,683 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:35,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:35,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1756178642, now seen corresponding path program 2 times [2024-06-21 16:18:35,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:35,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918552229] [2024-06-21 16:18:35,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:35,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:36,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:36,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:36,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918552229] [2024-06-21 16:18:36,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918552229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:36,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:36,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:18:36,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004321418] [2024-06-21 16:18:36,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:36,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:18:36,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:36,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:18:36,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:18:37,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:18:37,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 196 transitions, 1937 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:37,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:37,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:18:37,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:37,446 INFO L124 PetriNetUnfolderBase]: 452/815 cut-off events. [2024-06-21 16:18:37,447 INFO L125 PetriNetUnfolderBase]: For 68968/68968 co-relation queries the response was YES. [2024-06-21 16:18:37,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6431 conditions, 815 events. 452/815 cut-off events. For 68968/68968 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3880 event pairs, 38 based on Foata normal form. 1/814 useless extension candidates. Maximal degree in co-relation 6327. Up to 692 conditions per place. [2024-06-21 16:18:37,454 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 166 selfloop transitions, 38 changer transitions 0/207 dead transitions. [2024-06-21 16:18:37,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 207 transitions, 2379 flow [2024-06-21 16:18:37,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:18:37,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:18:37,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-21 16:18:37,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-21 16:18:37,455 INFO L175 Difference]: Start difference. First operand has 211 places, 196 transitions, 1937 flow. Second operand 9 states and 114 transitions. [2024-06-21 16:18:37,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 207 transitions, 2379 flow [2024-06-21 16:18:37,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 207 transitions, 2228 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-21 16:18:37,558 INFO L231 Difference]: Finished difference. Result has 212 places, 196 transitions, 1869 flow [2024-06-21 16:18:37,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1786, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1869, PETRI_PLACES=212, PETRI_TRANSITIONS=196} [2024-06-21 16:18:37,558 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 181 predicate places. [2024-06-21 16:18:37,558 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 196 transitions, 1869 flow [2024-06-21 16:18:37,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:37,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:37,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:37,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-21 16:18:37,559 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:37,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:37,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1074879485, now seen corresponding path program 8 times [2024-06-21 16:18:37,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:37,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550654374] [2024-06-21 16:18:37,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:37,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:37,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:38,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:38,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:38,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550654374] [2024-06-21 16:18:38,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550654374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:38,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:38,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:18:38,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807694513] [2024-06-21 16:18:38,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:38,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:18:38,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:38,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:18:38,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:18:38,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:18:38,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 196 transitions, 1869 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:38,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:38,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:18:38,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:38,771 INFO L124 PetriNetUnfolderBase]: 468/842 cut-off events. [2024-06-21 16:18:38,771 INFO L125 PetriNetUnfolderBase]: For 77914/77914 co-relation queries the response was YES. [2024-06-21 16:18:38,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6735 conditions, 842 events. 468/842 cut-off events. For 77914/77914 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4003 event pairs, 47 based on Foata normal form. 2/842 useless extension candidates. Maximal degree in co-relation 6630. Up to 555 conditions per place. [2024-06-21 16:18:38,780 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 134 selfloop transitions, 78 changer transitions 0/215 dead transitions. [2024-06-21 16:18:38,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 215 transitions, 2581 flow [2024-06-21 16:18:38,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:18:38,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:18:38,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-21 16:18:38,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-21 16:18:38,782 INFO L175 Difference]: Start difference. First operand has 212 places, 196 transitions, 1869 flow. Second operand 10 states and 133 transitions. [2024-06-21 16:18:38,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 215 transitions, 2581 flow [2024-06-21 16:18:38,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 215 transitions, 2496 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-21 16:18:38,885 INFO L231 Difference]: Finished difference. Result has 215 places, 200 transitions, 2063 flow [2024-06-21 16:18:38,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1786, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2063, PETRI_PLACES=215, PETRI_TRANSITIONS=200} [2024-06-21 16:18:38,886 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-21 16:18:38,886 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 200 transitions, 2063 flow [2024-06-21 16:18:38,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:38,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:38,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:38,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-21 16:18:38,887 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:38,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:38,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1075146612, now seen corresponding path program 7 times [2024-06-21 16:18:38,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:38,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955136617] [2024-06-21 16:18:38,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:38,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:38,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:39,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:39,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:39,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955136617] [2024-06-21 16:18:39,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955136617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:39,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:39,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:18:39,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916253197] [2024-06-21 16:18:39,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:39,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:18:39,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:39,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:18:39,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:18:40,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:18:40,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 200 transitions, 2063 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:40,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:40,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:18:40,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:40,406 INFO L124 PetriNetUnfolderBase]: 471/849 cut-off events. [2024-06-21 16:18:40,406 INFO L125 PetriNetUnfolderBase]: For 76842/76842 co-relation queries the response was YES. [2024-06-21 16:18:40,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7065 conditions, 849 events. 471/849 cut-off events. For 76842/76842 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4062 event pairs, 47 based on Foata normal form. 1/848 useless extension candidates. Maximal degree in co-relation 6958. Up to 661 conditions per place. [2024-06-21 16:18:40,413 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 156 selfloop transitions, 55 changer transitions 0/214 dead transitions. [2024-06-21 16:18:40,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 214 transitions, 2603 flow [2024-06-21 16:18:40,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:18:40,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:18:40,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 16:18:40,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-21 16:18:40,414 INFO L175 Difference]: Start difference. First operand has 215 places, 200 transitions, 2063 flow. Second operand 10 states and 126 transitions. [2024-06-21 16:18:40,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 214 transitions, 2603 flow [2024-06-21 16:18:40,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 214 transitions, 2501 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-21 16:18:40,526 INFO L231 Difference]: Finished difference. Result has 219 places, 202 transitions, 2146 flow [2024-06-21 16:18:40,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1961, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2146, PETRI_PLACES=219, PETRI_TRANSITIONS=202} [2024-06-21 16:18:40,526 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 188 predicate places. [2024-06-21 16:18:40,526 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 202 transitions, 2146 flow [2024-06-21 16:18:40,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:40,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:40,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:40,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-21 16:18:40,531 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:40,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:40,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1075146395, now seen corresponding path program 9 times [2024-06-21 16:18:40,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:40,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012276396] [2024-06-21 16:18:40,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:40,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:41,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:41,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:41,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012276396] [2024-06-21 16:18:41,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012276396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:41,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:41,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:18:41,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412891545] [2024-06-21 16:18:41,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:41,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:18:41,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:41,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:18:41,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:18:41,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:18:41,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 202 transitions, 2146 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:41,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:41,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:18:41,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:41,648 INFO L124 PetriNetUnfolderBase]: 477/859 cut-off events. [2024-06-21 16:18:41,648 INFO L125 PetriNetUnfolderBase]: For 81017/81017 co-relation queries the response was YES. [2024-06-21 16:18:41,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7230 conditions, 859 events. 477/859 cut-off events. For 81017/81017 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4117 event pairs, 47 based on Foata normal form. 2/859 useless extension candidates. Maximal degree in co-relation 7121. Up to 566 conditions per place. [2024-06-21 16:18:41,654 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 144 selfloop transitions, 75 changer transitions 0/222 dead transitions. [2024-06-21 16:18:41,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 222 transitions, 3011 flow [2024-06-21 16:18:41,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:18:41,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:18:41,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-21 16:18:41,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-21 16:18:41,656 INFO L175 Difference]: Start difference. First operand has 219 places, 202 transitions, 2146 flow. Second operand 10 states and 135 transitions. [2024-06-21 16:18:41,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 222 transitions, 3011 flow [2024-06-21 16:18:41,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 222 transitions, 2842 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-21 16:18:41,767 INFO L231 Difference]: Finished difference. Result has 221 places, 204 transitions, 2172 flow [2024-06-21 16:18:41,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1977, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2172, PETRI_PLACES=221, PETRI_TRANSITIONS=204} [2024-06-21 16:18:41,767 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 190 predicate places. [2024-06-21 16:18:41,767 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 204 transitions, 2172 flow [2024-06-21 16:18:41,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:41,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:41,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:41,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-21 16:18:41,768 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:41,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:41,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1756447691, now seen corresponding path program 10 times [2024-06-21 16:18:41,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:41,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534315066] [2024-06-21 16:18:41,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:41,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:42,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:42,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:42,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534315066] [2024-06-21 16:18:42,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534315066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:42,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:42,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:18:42,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785743808] [2024-06-21 16:18:42,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:42,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:18:42,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:42,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:18:42,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:18:42,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:18:42,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 204 transitions, 2172 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:42,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:42,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:18:42,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:43,227 INFO L124 PetriNetUnfolderBase]: 473/853 cut-off events. [2024-06-21 16:18:43,228 INFO L125 PetriNetUnfolderBase]: For 78153/78153 co-relation queries the response was YES. [2024-06-21 16:18:43,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7083 conditions, 853 events. 473/853 cut-off events. For 78153/78153 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4088 event pairs, 46 based on Foata normal form. 2/853 useless extension candidates. Maximal degree in co-relation 6973. Up to 563 conditions per place. [2024-06-21 16:18:43,234 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 146 selfloop transitions, 73 changer transitions 0/222 dead transitions. [2024-06-21 16:18:43,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 222 transitions, 2871 flow [2024-06-21 16:18:43,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:18:43,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:18:43,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-21 16:18:43,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-21 16:18:43,235 INFO L175 Difference]: Start difference. First operand has 221 places, 204 transitions, 2172 flow. Second operand 10 states and 135 transitions. [2024-06-21 16:18:43,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 222 transitions, 2871 flow [2024-06-21 16:18:43,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 222 transitions, 2653 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-21 16:18:43,363 INFO L231 Difference]: Finished difference. Result has 223 places, 204 transitions, 2106 flow [2024-06-21 16:18:43,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1954, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2106, PETRI_PLACES=223, PETRI_TRANSITIONS=204} [2024-06-21 16:18:43,363 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 192 predicate places. [2024-06-21 16:18:43,364 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 204 transitions, 2106 flow [2024-06-21 16:18:43,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:43,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:43,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:43,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-21 16:18:43,364 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:43,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:43,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1264865311, now seen corresponding path program 11 times [2024-06-21 16:18:43,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:43,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65573140] [2024-06-21 16:18:43,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:43,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:44,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:44,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:44,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65573140] [2024-06-21 16:18:44,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65573140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:44,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:44,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:18:44,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101596018] [2024-06-21 16:18:44,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:44,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:18:44,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:44,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:18:44,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:18:44,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:18:44,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 204 transitions, 2106 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:44,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:44,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:18:44,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:44,605 INFO L124 PetriNetUnfolderBase]: 509/912 cut-off events. [2024-06-21 16:18:44,606 INFO L125 PetriNetUnfolderBase]: For 96094/96094 co-relation queries the response was YES. [2024-06-21 16:18:44,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7949 conditions, 912 events. 509/912 cut-off events. For 96094/96094 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4427 event pairs, 55 based on Foata normal form. 2/908 useless extension candidates. Maximal degree in co-relation 7839. Up to 437 conditions per place. [2024-06-21 16:18:44,613 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 126 selfloop transitions, 102 changer transitions 0/231 dead transitions. [2024-06-21 16:18:44,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 231 transitions, 3314 flow [2024-06-21 16:18:44,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:18:44,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:18:44,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-21 16:18:44,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-21 16:18:44,615 INFO L175 Difference]: Start difference. First operand has 223 places, 204 transitions, 2106 flow. Second operand 10 states and 140 transitions. [2024-06-21 16:18:44,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 231 transitions, 3314 flow [2024-06-21 16:18:44,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 231 transitions, 3120 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-21 16:18:44,765 INFO L231 Difference]: Finished difference. Result has 224 places, 214 transitions, 2418 flow [2024-06-21 16:18:44,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1912, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2418, PETRI_PLACES=224, PETRI_TRANSITIONS=214} [2024-06-21 16:18:44,765 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 193 predicate places. [2024-06-21 16:18:44,765 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 214 transitions, 2418 flow [2024-06-21 16:18:44,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:44,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:44,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:44,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-21 16:18:44,766 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:44,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:44,766 INFO L85 PathProgramCache]: Analyzing trace with hash -764298011, now seen corresponding path program 2 times [2024-06-21 16:18:44,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:44,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729478581] [2024-06-21 16:18:44,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:44,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:45,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:45,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:45,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729478581] [2024-06-21 16:18:45,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729478581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:45,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:45,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:18:45,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247390531] [2024-06-21 16:18:45,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:45,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:18:45,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:45,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:18:45,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:18:46,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 16:18:46,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 214 transitions, 2418 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:46,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:46,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 16:18:46,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:46,426 INFO L124 PetriNetUnfolderBase]: 478/881 cut-off events. [2024-06-21 16:18:46,426 INFO L125 PetriNetUnfolderBase]: For 101333/101334 co-relation queries the response was YES. [2024-06-21 16:18:46,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8079 conditions, 881 events. 478/881 cut-off events. For 101333/101334 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4429 event pairs, 42 based on Foata normal form. 3/880 useless extension candidates. Maximal degree in co-relation 7967. Up to 712 conditions per place. [2024-06-21 16:18:46,434 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 166 selfloop transitions, 31 changer transitions 0/227 dead transitions. [2024-06-21 16:18:46,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 227 transitions, 2880 flow [2024-06-21 16:18:46,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:18:46,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:18:46,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-21 16:18:46,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-21 16:18:46,435 INFO L175 Difference]: Start difference. First operand has 224 places, 214 transitions, 2418 flow. Second operand 10 states and 129 transitions. [2024-06-21 16:18:46,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 227 transitions, 2880 flow [2024-06-21 16:18:46,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 227 transitions, 2770 flow, removed 45 selfloop flow, removed 3 redundant places. [2024-06-21 16:18:46,607 INFO L231 Difference]: Finished difference. Result has 232 places, 217 transitions, 2427 flow [2024-06-21 16:18:46,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2309, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2427, PETRI_PLACES=232, PETRI_TRANSITIONS=217} [2024-06-21 16:18:46,607 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 201 predicate places. [2024-06-21 16:18:46,607 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 217 transitions, 2427 flow [2024-06-21 16:18:46,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:46,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:46,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:46,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-21 16:18:46,608 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:46,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:46,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1255918091, now seen corresponding path program 3 times [2024-06-21 16:18:46,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:46,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674418497] [2024-06-21 16:18:46,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:46,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:46,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:47,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:47,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:47,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674418497] [2024-06-21 16:18:47,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674418497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:47,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:47,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:18:47,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322668333] [2024-06-21 16:18:47,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:47,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:18:47,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:47,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:18:47,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:18:47,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 16:18:47,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 217 transitions, 2427 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:47,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:47,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 16:18:47,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:48,180 INFO L124 PetriNetUnfolderBase]: 487/894 cut-off events. [2024-06-21 16:18:48,181 INFO L125 PetriNetUnfolderBase]: For 102873/102874 co-relation queries the response was YES. [2024-06-21 16:18:48,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8115 conditions, 894 events. 487/894 cut-off events. For 102873/102874 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4487 event pairs, 43 based on Foata normal form. 3/893 useless extension candidates. Maximal degree in co-relation 8000. Up to 764 conditions per place. [2024-06-21 16:18:48,189 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 185 selfloop transitions, 15 changer transitions 0/230 dead transitions. [2024-06-21 16:18:48,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 230 transitions, 2888 flow [2024-06-21 16:18:48,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:18:48,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:18:48,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-21 16:18:48,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-21 16:18:48,191 INFO L175 Difference]: Start difference. First operand has 232 places, 217 transitions, 2427 flow. Second operand 10 states and 124 transitions. [2024-06-21 16:18:48,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 230 transitions, 2888 flow [2024-06-21 16:18:48,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 230 transitions, 2796 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-21 16:18:48,360 INFO L231 Difference]: Finished difference. Result has 236 places, 220 transitions, 2417 flow [2024-06-21 16:18:48,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2335, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2417, PETRI_PLACES=236, PETRI_TRANSITIONS=220} [2024-06-21 16:18:48,361 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 205 predicate places. [2024-06-21 16:18:48,361 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 220 transitions, 2417 flow [2024-06-21 16:18:48,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:48,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:48,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:48,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-21 16:18:48,362 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:48,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:48,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1012459389, now seen corresponding path program 4 times [2024-06-21 16:18:48,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:48,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889614734] [2024-06-21 16:18:48,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:48,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:48,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:49,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:49,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:49,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889614734] [2024-06-21 16:18:49,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889614734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:49,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:49,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:18:49,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515049579] [2024-06-21 16:18:49,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:49,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:18:49,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:49,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:18:49,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:18:49,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 16:18:49,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 220 transitions, 2417 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:49,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:49,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 16:18:49,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:50,184 INFO L124 PetriNetUnfolderBase]: 490/903 cut-off events. [2024-06-21 16:18:50,185 INFO L125 PetriNetUnfolderBase]: For 105181/105182 co-relation queries the response was YES. [2024-06-21 16:18:50,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8157 conditions, 903 events. 490/903 cut-off events. For 105181/105182 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4545 event pairs, 44 based on Foata normal form. 3/902 useless extension candidates. Maximal degree in co-relation 8040. Up to 755 conditions per place. [2024-06-21 16:18:50,191 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 180 selfloop transitions, 21 changer transitions 0/231 dead transitions. [2024-06-21 16:18:50,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 231 transitions, 2865 flow [2024-06-21 16:18:50,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:18:50,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:18:50,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 16:18:50,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-21 16:18:50,192 INFO L175 Difference]: Start difference. First operand has 236 places, 220 transitions, 2417 flow. Second operand 10 states and 126 transitions. [2024-06-21 16:18:50,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 231 transitions, 2865 flow [2024-06-21 16:18:50,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 231 transitions, 2818 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-21 16:18:50,357 INFO L231 Difference]: Finished difference. Result has 239 places, 221 transitions, 2442 flow [2024-06-21 16:18:50,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2370, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2442, PETRI_PLACES=239, PETRI_TRANSITIONS=221} [2024-06-21 16:18:50,358 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 208 predicate places. [2024-06-21 16:18:50,358 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 221 transitions, 2442 flow [2024-06-21 16:18:50,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:50,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:50,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:50,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-21 16:18:50,359 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:50,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:50,359 INFO L85 PathProgramCache]: Analyzing trace with hash -439170941, now seen corresponding path program 5 times [2024-06-21 16:18:50,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:50,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498894355] [2024-06-21 16:18:50,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:50,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:50,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:51,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:51,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:51,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498894355] [2024-06-21 16:18:51,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498894355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:51,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:51,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:18:51,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088144378] [2024-06-21 16:18:51,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:51,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:18:51,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:51,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:18:51,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:18:51,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 16:18:51,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 221 transitions, 2442 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:51,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:51,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 16:18:51,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:52,030 INFO L124 PetriNetUnfolderBase]: 494/909 cut-off events. [2024-06-21 16:18:52,031 INFO L125 PetriNetUnfolderBase]: For 108237/108238 co-relation queries the response was YES. [2024-06-21 16:18:52,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8230 conditions, 909 events. 494/909 cut-off events. For 108237/108238 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4588 event pairs, 46 based on Foata normal form. 3/908 useless extension candidates. Maximal degree in co-relation 8112. Up to 750 conditions per place. [2024-06-21 16:18:52,040 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 184 selfloop transitions, 21 changer transitions 0/235 dead transitions. [2024-06-21 16:18:52,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 235 transitions, 3058 flow [2024-06-21 16:18:52,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:18:52,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:18:52,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-21 16:18:52,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-21 16:18:52,041 INFO L175 Difference]: Start difference. First operand has 239 places, 221 transitions, 2442 flow. Second operand 11 states and 137 transitions. [2024-06-21 16:18:52,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 235 transitions, 3058 flow [2024-06-21 16:18:52,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 235 transitions, 2996 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-21 16:18:52,242 INFO L231 Difference]: Finished difference. Result has 242 places, 222 transitions, 2452 flow [2024-06-21 16:18:52,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2380, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2452, PETRI_PLACES=242, PETRI_TRANSITIONS=222} [2024-06-21 16:18:52,243 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 211 predicate places. [2024-06-21 16:18:52,243 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 222 transitions, 2452 flow [2024-06-21 16:18:52,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:18:52,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:52,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:52,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-21 16:18:52,244 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:52,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:52,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1012728779, now seen corresponding path program 12 times [2024-06-21 16:18:52,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:52,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472187619] [2024-06-21 16:18:52,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:52,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:52,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:53,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:53,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:53,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472187619] [2024-06-21 16:18:53,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472187619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:53,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:53,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:18:53,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930030748] [2024-06-21 16:18:53,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:53,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:18:53,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:53,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:18:53,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:18:53,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:18:53,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 222 transitions, 2452 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:53,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:53,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:18:53,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:53,454 INFO L124 PetriNetUnfolderBase]: 554/991 cut-off events. [2024-06-21 16:18:53,454 INFO L125 PetriNetUnfolderBase]: For 121324/121324 co-relation queries the response was YES. [2024-06-21 16:18:53,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9179 conditions, 991 events. 554/991 cut-off events. For 121324/121324 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4907 event pairs, 59 based on Foata normal form. 2/987 useless extension candidates. Maximal degree in co-relation 9060. Up to 749 conditions per place. [2024-06-21 16:18:53,462 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 187 selfloop transitions, 55 changer transitions 0/245 dead transitions. [2024-06-21 16:18:53,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 245 transitions, 3632 flow [2024-06-21 16:18:53,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:18:53,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:18:53,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-21 16:18:53,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.434375 [2024-06-21 16:18:53,464 INFO L175 Difference]: Start difference. First operand has 242 places, 222 transitions, 2452 flow. Second operand 10 states and 139 transitions. [2024-06-21 16:18:53,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 245 transitions, 3632 flow [2024-06-21 16:18:53,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 245 transitions, 3574 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-21 16:18:53,710 INFO L231 Difference]: Finished difference. Result has 244 places, 228 transitions, 2647 flow [2024-06-21 16:18:53,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2394, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2647, PETRI_PLACES=244, PETRI_TRANSITIONS=228} [2024-06-21 16:18:53,711 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 213 predicate places. [2024-06-21 16:18:53,711 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 228 transitions, 2647 flow [2024-06-21 16:18:53,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:53,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:53,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:53,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-21 16:18:53,712 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:53,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:53,712 INFO L85 PathProgramCache]: Analyzing trace with hash 608707843, now seen corresponding path program 13 times [2024-06-21 16:18:53,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:53,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801079107] [2024-06-21 16:18:53,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:53,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:54,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:54,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:54,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801079107] [2024-06-21 16:18:54,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801079107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:54,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:54,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:18:54,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010579513] [2024-06-21 16:18:54,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:54,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:18:54,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:54,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:18:54,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:18:54,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:18:54,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 228 transitions, 2647 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:54,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:54,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:18:54,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:54,873 INFO L124 PetriNetUnfolderBase]: 550/985 cut-off events. [2024-06-21 16:18:54,873 INFO L125 PetriNetUnfolderBase]: For 118717/118717 co-relation queries the response was YES. [2024-06-21 16:18:54,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9057 conditions, 985 events. 550/985 cut-off events. For 118717/118717 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4885 event pairs, 58 based on Foata normal form. 2/981 useless extension candidates. Maximal degree in co-relation 8938. Up to 746 conditions per place. [2024-06-21 16:18:54,905 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 185 selfloop transitions, 56 changer transitions 0/244 dead transitions. [2024-06-21 16:18:54,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 244 transitions, 3535 flow [2024-06-21 16:18:54,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:18:54,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:18:54,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-21 16:18:54,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-21 16:18:54,906 INFO L175 Difference]: Start difference. First operand has 244 places, 228 transitions, 2647 flow. Second operand 10 states and 137 transitions. [2024-06-21 16:18:54,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 244 transitions, 3535 flow [2024-06-21 16:18:55,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 244 transitions, 3154 flow, removed 51 selfloop flow, removed 10 redundant places. [2024-06-21 16:18:55,110 INFO L231 Difference]: Finished difference. Result has 244 places, 228 transitions, 2383 flow [2024-06-21 16:18:55,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2266, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2383, PETRI_PLACES=244, PETRI_TRANSITIONS=228} [2024-06-21 16:18:55,110 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 213 predicate places. [2024-06-21 16:18:55,110 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 228 transitions, 2383 flow [2024-06-21 16:18:55,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:55,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:55,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:55,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-21 16:18:55,111 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:55,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:55,112 INFO L85 PathProgramCache]: Analyzing trace with hash -450599122, now seen corresponding path program 3 times [2024-06-21 16:18:55,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:55,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604106555] [2024-06-21 16:18:55,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:55,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:55,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:56,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:56,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:56,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604106555] [2024-06-21 16:18:56,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604106555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:56,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:56,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:18:56,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290904797] [2024-06-21 16:18:56,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:56,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:18:56,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:56,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:18:56,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:18:56,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:18:56,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 228 transitions, 2383 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:56,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:56,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:18:56,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:56,865 INFO L124 PetriNetUnfolderBase]: 558/997 cut-off events. [2024-06-21 16:18:56,865 INFO L125 PetriNetUnfolderBase]: For 120199/120199 co-relation queries the response was YES. [2024-06-21 16:18:56,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8751 conditions, 997 events. 558/997 cut-off events. For 120199/120199 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4947 event pairs, 53 based on Foata normal form. 1/996 useless extension candidates. Maximal degree in co-relation 8635. Up to 932 conditions per place. [2024-06-21 16:18:56,874 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 220 selfloop transitions, 19 changer transitions 0/242 dead transitions. [2024-06-21 16:18:56,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 242 transitions, 3109 flow [2024-06-21 16:18:56,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:18:56,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:18:56,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-21 16:18:56,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-21 16:18:56,875 INFO L175 Difference]: Start difference. First operand has 244 places, 228 transitions, 2383 flow. Second operand 10 states and 118 transitions. [2024-06-21 16:18:56,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 242 transitions, 3109 flow [2024-06-21 16:18:57,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 242 transitions, 2999 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-21 16:18:57,077 INFO L231 Difference]: Finished difference. Result has 246 places, 232 transitions, 2388 flow [2024-06-21 16:18:57,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2273, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2388, PETRI_PLACES=246, PETRI_TRANSITIONS=232} [2024-06-21 16:18:57,078 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 215 predicate places. [2024-06-21 16:18:57,078 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 232 transitions, 2388 flow [2024-06-21 16:18:57,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:57,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:57,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:57,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-21 16:18:57,079 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:57,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:57,079 INFO L85 PathProgramCache]: Analyzing trace with hash -764567401, now seen corresponding path program 14 times [2024-06-21 16:18:57,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:57,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280362639] [2024-06-21 16:18:57,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:57,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:57,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:57,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:57,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:57,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280362639] [2024-06-21 16:18:57,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280362639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:57,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:57,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:18:57,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434497027] [2024-06-21 16:18:57,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:57,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:18:57,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:57,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:18:57,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:18:58,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:18:58,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 232 transitions, 2388 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:58,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:58,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:18:58,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:58,310 INFO L124 PetriNetUnfolderBase]: 566/1013 cut-off events. [2024-06-21 16:18:58,311 INFO L125 PetriNetUnfolderBase]: For 126461/126461 co-relation queries the response was YES. [2024-06-21 16:18:58,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8911 conditions, 1013 events. 566/1013 cut-off events. For 126461/126461 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5067 event pairs, 55 based on Foata normal form. 1/1008 useless extension candidates. Maximal degree in co-relation 8794. Up to 647 conditions per place. [2024-06-21 16:18:58,318 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 181 selfloop transitions, 91 changer transitions 0/275 dead transitions. [2024-06-21 16:18:58,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 275 transitions, 3838 flow [2024-06-21 16:18:58,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:18:58,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:18:58,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-21 16:18:58,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-21 16:18:58,320 INFO L175 Difference]: Start difference. First operand has 246 places, 232 transitions, 2388 flow. Second operand 10 states and 135 transitions. [2024-06-21 16:18:58,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 275 transitions, 3838 flow [2024-06-21 16:18:58,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 275 transitions, 3798 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-21 16:18:58,525 INFO L231 Difference]: Finished difference. Result has 253 places, 258 transitions, 3008 flow [2024-06-21 16:18:58,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2348, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3008, PETRI_PLACES=253, PETRI_TRANSITIONS=258} [2024-06-21 16:18:58,526 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 222 predicate places. [2024-06-21 16:18:58,526 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 258 transitions, 3008 flow [2024-06-21 16:18:58,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:58,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:18:58,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:18:58,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-21 16:18:58,527 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:18:58,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:18:58,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1012736436, now seen corresponding path program 8 times [2024-06-21 16:18:58,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:18:58,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2688046] [2024-06-21 16:18:58,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:18:58,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:18:58,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:18:59,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:18:59,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:18:59,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2688046] [2024-06-21 16:18:59,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2688046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:18:59,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:18:59,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:18:59,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369694995] [2024-06-21 16:18:59,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:18:59,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:18:59,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:18:59,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:18:59,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:18:59,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:18:59,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 258 transitions, 3008 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:18:59,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:18:59,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:18:59,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:18:59,819 INFO L124 PetriNetUnfolderBase]: 574/1030 cut-off events. [2024-06-21 16:18:59,819 INFO L125 PetriNetUnfolderBase]: For 135202/135202 co-relation queries the response was YES. [2024-06-21 16:18:59,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9695 conditions, 1030 events. 574/1030 cut-off events. For 135202/135202 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5197 event pairs, 58 based on Foata normal form. 1/1025 useless extension candidates. Maximal degree in co-relation 9573. Up to 851 conditions per place. [2024-06-21 16:18:59,827 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 224 selfloop transitions, 46 changer transitions 0/273 dead transitions. [2024-06-21 16:18:59,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 273 transitions, 3882 flow [2024-06-21 16:18:59,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:18:59,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:18:59,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-21 16:18:59,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-21 16:18:59,829 INFO L175 Difference]: Start difference. First operand has 253 places, 258 transitions, 3008 flow. Second operand 10 states and 129 transitions. [2024-06-21 16:18:59,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 273 transitions, 3882 flow [2024-06-21 16:19:00,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 273 transitions, 3782 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-21 16:19:00,082 INFO L231 Difference]: Finished difference. Result has 258 places, 262 transitions, 3153 flow [2024-06-21 16:19:00,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2908, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3153, PETRI_PLACES=258, PETRI_TRANSITIONS=262} [2024-06-21 16:19:00,083 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2024-06-21 16:19:00,083 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 262 transitions, 3153 flow [2024-06-21 16:19:00,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:19:00,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:19:00,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:19:00,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-21 16:19:00,084 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:19:00,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:19:00,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1012469309, now seen corresponding path program 15 times [2024-06-21 16:19:00,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:19:00,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103807321] [2024-06-21 16:19:00,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:19:00,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:19:00,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:19:00,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:19:00,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:19:00,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103807321] [2024-06-21 16:19:00,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103807321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:19:00,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:19:00,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:19:00,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796201642] [2024-06-21 16:19:00,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:19:00,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:19:00,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:19:00,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:19:00,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:19:00,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:19:00,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 262 transitions, 3153 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:19:00,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:19:00,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:19:00,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:19:01,177 INFO L124 PetriNetUnfolderBase]: 570/1024 cut-off events. [2024-06-21 16:19:01,178 INFO L125 PetriNetUnfolderBase]: For 134818/134818 co-relation queries the response was YES. [2024-06-21 16:19:01,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9497 conditions, 1024 events. 570/1024 cut-off events. For 134818/134818 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5168 event pairs, 60 based on Foata normal form. 2/1020 useless extension candidates. Maximal degree in co-relation 9374. Up to 782 conditions per place. [2024-06-21 16:19:01,188 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 210 selfloop transitions, 63 changer transitions 0/276 dead transitions. [2024-06-21 16:19:01,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 276 transitions, 3942 flow [2024-06-21 16:19:01,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:19:01,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:19:01,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-21 16:19:01,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-21 16:19:01,189 INFO L175 Difference]: Start difference. First operand has 258 places, 262 transitions, 3153 flow. Second operand 10 states and 135 transitions. [2024-06-21 16:19:01,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 276 transitions, 3942 flow [2024-06-21 16:19:01,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 276 transitions, 3785 flow, removed 54 selfloop flow, removed 6 redundant places. [2024-06-21 16:19:01,405 INFO L231 Difference]: Finished difference. Result has 262 places, 262 transitions, 3128 flow [2024-06-21 16:19:01,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2996, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3128, PETRI_PLACES=262, PETRI_TRANSITIONS=262} [2024-06-21 16:19:01,406 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 231 predicate places. [2024-06-21 16:19:01,406 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 262 transitions, 3128 flow [2024-06-21 16:19:01,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:19:01,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:19:01,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:19:01,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-21 16:19:01,406 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:19:01,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:19:01,407 INFO L85 PathProgramCache]: Analyzing trace with hash -439557232, now seen corresponding path program 4 times [2024-06-21 16:19:01,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:19:01,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879687088] [2024-06-21 16:19:01,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:19:01,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:19:01,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:19:02,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:19:02,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:19:02,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879687088] [2024-06-21 16:19:02,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879687088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:19:02,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:19:02,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:19:02,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475904917] [2024-06-21 16:19:02,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:19:02,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:19:02,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:19:02,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:19:02,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:19:02,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:19:02,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 262 transitions, 3128 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:19:02,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:19:02,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:19:02,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:19:02,988 INFO L124 PetriNetUnfolderBase]: 566/1017 cut-off events. [2024-06-21 16:19:02,989 INFO L125 PetriNetUnfolderBase]: For 130410/130410 co-relation queries the response was YES. [2024-06-21 16:19:02,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9342 conditions, 1017 events. 566/1017 cut-off events. For 130410/130410 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5113 event pairs, 52 based on Foata normal form. 2/1017 useless extension candidates. Maximal degree in co-relation 9217. Up to 938 conditions per place. [2024-06-21 16:19:02,999 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 244 selfloop transitions, 26 changer transitions 0/273 dead transitions. [2024-06-21 16:19:02,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 273 transitions, 3692 flow [2024-06-21 16:19:03,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:19:03,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:19:03,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-21 16:19:03,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-21 16:19:03,000 INFO L175 Difference]: Start difference. First operand has 262 places, 262 transitions, 3128 flow. Second operand 12 states and 135 transitions. [2024-06-21 16:19:03,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 273 transitions, 3692 flow [2024-06-21 16:19:03,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 273 transitions, 3519 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-21 16:19:03,236 INFO L231 Difference]: Finished difference. Result has 265 places, 262 transitions, 3018 flow [2024-06-21 16:19:03,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2955, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3018, PETRI_PLACES=265, PETRI_TRANSITIONS=262} [2024-06-21 16:19:03,237 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 234 predicate places. [2024-06-21 16:19:03,237 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 262 transitions, 3018 flow [2024-06-21 16:19:03,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:19:03,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:19:03,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:19:03,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-21 16:19:03,238 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:19:03,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:19:03,238 INFO L85 PathProgramCache]: Analyzing trace with hash -439556891, now seen corresponding path program 6 times [2024-06-21 16:19:03,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:19:03,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722901013] [2024-06-21 16:19:03,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:19:03,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:19:03,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:19:04,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:19:04,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:19:04,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722901013] [2024-06-21 16:19:04,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722901013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:19:04,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:19:04,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:19:04,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499754205] [2024-06-21 16:19:04,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:19:04,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:19:04,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:19:04,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:19:04,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:19:04,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 16:19:04,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 262 transitions, 3018 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:19:04,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:19:04,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 16:19:04,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:19:04,877 INFO L124 PetriNetUnfolderBase]: 529/973 cut-off events. [2024-06-21 16:19:04,877 INFO L125 PetriNetUnfolderBase]: For 127845/127846 co-relation queries the response was YES. [2024-06-21 16:19:04,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8831 conditions, 973 events. 529/973 cut-off events. For 127845/127846 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5016 event pairs, 46 based on Foata normal form. 3/972 useless extension candidates. Maximal degree in co-relation 8705. Up to 822 conditions per place. [2024-06-21 16:19:04,887 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 220 selfloop transitions, 20 changer transitions 0/273 dead transitions. [2024-06-21 16:19:04,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 273 transitions, 3522 flow [2024-06-21 16:19:04,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:19:04,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:19:04,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-21 16:19:04,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-21 16:19:04,889 INFO L175 Difference]: Start difference. First operand has 265 places, 262 transitions, 3018 flow. Second operand 11 states and 135 transitions. [2024-06-21 16:19:04,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 273 transitions, 3522 flow [2024-06-21 16:19:05,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 273 transitions, 3410 flow, removed 13 selfloop flow, removed 14 redundant places. [2024-06-21 16:19:05,111 INFO L231 Difference]: Finished difference. Result has 262 places, 262 transitions, 2952 flow [2024-06-21 16:19:05,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2906, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2952, PETRI_PLACES=262, PETRI_TRANSITIONS=262} [2024-06-21 16:19:05,112 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 231 predicate places. [2024-06-21 16:19:05,112 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 262 transitions, 2952 flow [2024-06-21 16:19:05,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:19:05,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:19:05,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:19:05,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-21 16:19:05,113 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:19:05,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:19:05,113 INFO L85 PathProgramCache]: Analyzing trace with hash 601558003, now seen corresponding path program 16 times [2024-06-21 16:19:05,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:19:05,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157050706] [2024-06-21 16:19:05,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:19:05,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:19:05,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:19:05,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:19:05,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:19:05,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157050706] [2024-06-21 16:19:05,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157050706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:19:05,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:19:05,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:19:05,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169986814] [2024-06-21 16:19:05,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:19:05,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:19:05,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:19:05,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:19:05,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:19:05,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:19:05,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 262 transitions, 2952 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:19:05,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:19:05,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:19:05,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:19:06,139 INFO L124 PetriNetUnfolderBase]: 579/1039 cut-off events. [2024-06-21 16:19:06,139 INFO L125 PetriNetUnfolderBase]: For 133262/133262 co-relation queries the response was YES. [2024-06-21 16:19:06,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9377 conditions, 1039 events. 579/1039 cut-off events. For 133262/133262 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5267 event pairs, 58 based on Foata normal form. 2/1035 useless extension candidates. Maximal degree in co-relation 9251. Up to 837 conditions per place. [2024-06-21 16:19:06,150 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 229 selfloop transitions, 51 changer transitions 0/283 dead transitions. [2024-06-21 16:19:06,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 283 transitions, 4051 flow [2024-06-21 16:19:06,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:19:06,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:19:06,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-21 16:19:06,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-21 16:19:06,151 INFO L175 Difference]: Start difference. First operand has 262 places, 262 transitions, 2952 flow. Second operand 10 states and 133 transitions. [2024-06-21 16:19:06,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 283 transitions, 4051 flow [2024-06-21 16:19:06,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 283 transitions, 3974 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 16:19:06,415 INFO L231 Difference]: Finished difference. Result has 261 places, 268 transitions, 3109 flow [2024-06-21 16:19:06,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2879, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3109, PETRI_PLACES=261, PETRI_TRANSITIONS=268} [2024-06-21 16:19:06,415 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 230 predicate places. [2024-06-21 16:19:06,415 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 268 transitions, 3109 flow [2024-06-21 16:19:06,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:19:06,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:19:06,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:19:06,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-21 16:19:06,416 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:19:06,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:19:06,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1521632948, now seen corresponding path program 9 times [2024-06-21 16:19:06,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:19:06,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327890117] [2024-06-21 16:19:06,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:19:06,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:19:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:19:07,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:19:07,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:19:07,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327890117] [2024-06-21 16:19:07,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327890117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:19:07,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:19:07,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:19:07,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957990436] [2024-06-21 16:19:07,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:19:07,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:19:07,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:19:07,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:19:07,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:19:07,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:19:07,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 268 transitions, 3109 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:19:07,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:19:07,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:19:07,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:19:08,150 INFO L124 PetriNetUnfolderBase]: 582/1046 cut-off events. [2024-06-21 16:19:08,150 INFO L125 PetriNetUnfolderBase]: For 130749/130749 co-relation queries the response was YES. [2024-06-21 16:19:08,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9522 conditions, 1046 events. 582/1046 cut-off events. For 130749/130749 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5325 event pairs, 56 based on Foata normal form. 1/1041 useless extension candidates. Maximal degree in co-relation 9395. Up to 876 conditions per place. [2024-06-21 16:19:08,161 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 234 selfloop transitions, 46 changer transitions 0/283 dead transitions. [2024-06-21 16:19:08,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 283 transitions, 3953 flow [2024-06-21 16:19:08,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:19:08,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:19:08,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-21 16:19:08,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-21 16:19:08,163 INFO L175 Difference]: Start difference. First operand has 261 places, 268 transitions, 3109 flow. Second operand 11 states and 138 transitions. [2024-06-21 16:19:08,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 283 transitions, 3953 flow [2024-06-21 16:19:08,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 283 transitions, 3816 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-21 16:19:08,460 INFO L231 Difference]: Finished difference. Result has 265 places, 270 transitions, 3137 flow [2024-06-21 16:19:08,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2972, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3137, PETRI_PLACES=265, PETRI_TRANSITIONS=270} [2024-06-21 16:19:08,461 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 234 predicate places. [2024-06-21 16:19:08,461 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 270 transitions, 3137 flow [2024-06-21 16:19:08,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:19:08,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:19:08,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:19:08,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-21 16:19:08,462 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:19:08,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:19:08,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1019878619, now seen corresponding path program 17 times [2024-06-21 16:19:08,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:19:08,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061159585] [2024-06-21 16:19:08,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:19:08,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:19:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:19:09,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:19:09,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:19:09,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061159585] [2024-06-21 16:19:09,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061159585] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:19:09,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:19:09,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:19:09,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130893717] [2024-06-21 16:19:09,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:19:09,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:19:09,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:19:09,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:19:09,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:19:09,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:19:09,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 270 transitions, 3137 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:19:09,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:19:09,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:19:09,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:19:09,740 INFO L124 PetriNetUnfolderBase]: 578/1040 cut-off events. [2024-06-21 16:19:09,741 INFO L125 PetriNetUnfolderBase]: For 129934/129934 co-relation queries the response was YES. [2024-06-21 16:19:09,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9293 conditions, 1040 events. 578/1040 cut-off events. For 129934/129934 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5301 event pairs, 56 based on Foata normal form. 2/1036 useless extension candidates. Maximal degree in co-relation 9165. Up to 839 conditions per place. [2024-06-21 16:19:09,750 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 228 selfloop transitions, 52 changer transitions 0/283 dead transitions. [2024-06-21 16:19:09,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 283 transitions, 3929 flow [2024-06-21 16:19:09,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:19:09,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:19:09,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-21 16:19:09,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-21 16:19:09,751 INFO L175 Difference]: Start difference. First operand has 265 places, 270 transitions, 3137 flow. Second operand 10 states and 131 transitions. [2024-06-21 16:19:09,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 283 transitions, 3929 flow [2024-06-21 16:19:09,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 283 transitions, 3743 flow, removed 46 selfloop flow, removed 9 redundant places. [2024-06-21 16:19:09,999 INFO L231 Difference]: Finished difference. Result has 266 places, 270 transitions, 3061 flow [2024-06-21 16:19:09,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2951, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3061, PETRI_PLACES=266, PETRI_TRANSITIONS=270} [2024-06-21 16:19:09,999 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 235 predicate places. [2024-06-21 16:19:09,999 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 270 transitions, 3061 flow [2024-06-21 16:19:09,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:19:10,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:19:10,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:19:10,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-21 16:19:10,000 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:19:10,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:19:10,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1521834758, now seen corresponding path program 10 times [2024-06-21 16:19:10,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:19:10,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640927864] [2024-06-21 16:19:10,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:19:10,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:19:10,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:19:11,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:19:11,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:19:11,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640927864] [2024-06-21 16:19:11,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640927864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:19:11,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:19:11,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:19:11,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038824645] [2024-06-21 16:19:11,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:19:11,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:19:11,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:19:11,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:19:11,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:19:11,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:19:11,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 270 transitions, 3061 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:19:11,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:19:11,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:19:11,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:19:11,690 INFO L124 PetriNetUnfolderBase]: 576/1037 cut-off events. [2024-06-21 16:19:11,690 INFO L125 PetriNetUnfolderBase]: For 125016/125016 co-relation queries the response was YES. [2024-06-21 16:19:11,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9139 conditions, 1037 events. 576/1037 cut-off events. For 125016/125016 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5283 event pairs, 55 based on Foata normal form. 1/1032 useless extension candidates. Maximal degree in co-relation 9010. Up to 877 conditions per place. [2024-06-21 16:19:11,701 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 237 selfloop transitions, 42 changer transitions 0/282 dead transitions. [2024-06-21 16:19:11,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 282 transitions, 3665 flow [2024-06-21 16:19:11,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:19:11,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:19:11,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-21 16:19:11,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-21 16:19:11,702 INFO L175 Difference]: Start difference. First operand has 266 places, 270 transitions, 3061 flow. Second operand 11 states and 135 transitions. [2024-06-21 16:19:11,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 282 transitions, 3665 flow [2024-06-21 16:19:11,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 282 transitions, 3493 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-21 16:19:11,941 INFO L231 Difference]: Finished difference. Result has 268 places, 270 transitions, 2978 flow [2024-06-21 16:19:11,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2889, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2978, PETRI_PLACES=268, PETRI_TRANSITIONS=270} [2024-06-21 16:19:11,942 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 237 predicate places. [2024-06-21 16:19:11,942 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 270 transitions, 2978 flow [2024-06-21 16:19:11,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:19:11,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:19:11,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:19:11,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-21 16:19:11,942 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:19:11,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:19:11,943 INFO L85 PathProgramCache]: Analyzing trace with hash -755370631, now seen corresponding path program 18 times [2024-06-21 16:19:11,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:19:11,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779830650] [2024-06-21 16:19:11,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:19:11,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:19:11,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:19:12,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:19:12,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:19:12,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779830650] [2024-06-21 16:19:12,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779830650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:19:12,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:19:12,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:19:12,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750157078] [2024-06-21 16:19:12,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:19:12,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:19:12,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:19:12,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:19:12,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:19:12,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:19:12,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 270 transitions, 2978 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:19:12,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:19:12,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:19:12,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:19:13,287 INFO L124 PetriNetUnfolderBase]: 574/1033 cut-off events. [2024-06-21 16:19:13,287 INFO L125 PetriNetUnfolderBase]: For 123388/123388 co-relation queries the response was YES. [2024-06-21 16:19:13,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8974 conditions, 1033 events. 574/1033 cut-off events. For 123388/123388 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5239 event pairs, 51 based on Foata normal form. 1/1032 useless extension candidates. Maximal degree in co-relation 8844. Up to 967 conditions per place. [2024-06-21 16:19:13,297 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 260 selfloop transitions, 18 changer transitions 0/281 dead transitions. [2024-06-21 16:19:13,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 281 transitions, 3578 flow [2024-06-21 16:19:13,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:19:13,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:19:13,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-21 16:19:13,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-21 16:19:13,298 INFO L175 Difference]: Start difference. First operand has 268 places, 270 transitions, 2978 flow. Second operand 11 states and 123 transitions. [2024-06-21 16:19:13,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 281 transitions, 3578 flow [2024-06-21 16:19:13,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 281 transitions, 3451 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-21 16:19:13,550 INFO L231 Difference]: Finished difference. Result has 269 places, 272 transitions, 2918 flow [2024-06-21 16:19:13,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2857, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2918, PETRI_PLACES=269, PETRI_TRANSITIONS=272} [2024-06-21 16:19:13,551 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 238 predicate places. [2024-06-21 16:19:13,551 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 272 transitions, 2918 flow [2024-06-21 16:19:13,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:19:13,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:19:13,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:19:13,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-21 16:19:13,551 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:19:13,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:19:13,552 INFO L85 PathProgramCache]: Analyzing trace with hash -763385549, now seen corresponding path program 19 times [2024-06-21 16:19:13,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:19:13,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691138113] [2024-06-21 16:19:13,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:19:13,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:19:13,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:19:14,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:19:14,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:19:14,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691138113] [2024-06-21 16:19:14,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691138113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:19:14,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:19:14,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:19:14,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310277921] [2024-06-21 16:19:14,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:19:14,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:19:14,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:19:14,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:19:14,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:19:14,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:19:14,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 272 transitions, 2918 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:19:14,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:19:14,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:19:14,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:19:14,680 INFO L124 PetriNetUnfolderBase]: 575/1036 cut-off events. [2024-06-21 16:19:14,680 INFO L125 PetriNetUnfolderBase]: For 125720/125720 co-relation queries the response was YES. [2024-06-21 16:19:14,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8833 conditions, 1036 events. 575/1036 cut-off events. For 125720/125720 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5272 event pairs, 57 based on Foata normal form. 2/1032 useless extension candidates. Maximal degree in co-relation 8702. Up to 526 conditions per place. [2024-06-21 16:19:14,691 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 136 selfloop transitions, 149 changer transitions 0/288 dead transitions. [2024-06-21 16:19:14,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 288 transitions, 3937 flow [2024-06-21 16:19:14,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:19:14,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:19:14,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-21 16:19:14,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-21 16:19:14,692 INFO L175 Difference]: Start difference. First operand has 269 places, 272 transitions, 2918 flow. Second operand 10 states and 137 transitions. [2024-06-21 16:19:14,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 288 transitions, 3937 flow [2024-06-21 16:19:14,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 288 transitions, 3862 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-21 16:19:14,967 INFO L231 Difference]: Finished difference. Result has 271 places, 274 transitions, 3187 flow [2024-06-21 16:19:14,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2851, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3187, PETRI_PLACES=271, PETRI_TRANSITIONS=274} [2024-06-21 16:19:14,968 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 240 predicate places. [2024-06-21 16:19:14,968 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 274 transitions, 3187 flow [2024-06-21 16:19:14,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:19:14,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:19:14,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:19:14,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-21 16:19:14,969 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:19:14,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:19:14,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1020087869, now seen corresponding path program 20 times [2024-06-21 16:19:14,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:19:14,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954319244] [2024-06-21 16:19:14,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:19:14,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:19:14,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:19:15,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:19:15,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:19:15,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954319244] [2024-06-21 16:19:15,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954319244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:19:15,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:19:15,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:19:15,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980075030] [2024-06-21 16:19:15,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:19:15,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:19:15,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:19:15,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:19:15,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:19:15,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:19:15,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 274 transitions, 3187 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:19:15,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:19:15,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:19:15,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:19:16,250 INFO L124 PetriNetUnfolderBase]: 567/1023 cut-off events. [2024-06-21 16:19:16,250 INFO L125 PetriNetUnfolderBase]: For 121570/121570 co-relation queries the response was YES. [2024-06-21 16:19:16,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8658 conditions, 1023 events. 567/1023 cut-off events. For 121570/121570 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5236 event pairs, 55 based on Foata normal form. 4/1022 useless extension candidates. Maximal degree in co-relation 8526. Up to 855 conditions per place. [2024-06-21 16:19:16,260 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 240 selfloop transitions, 42 changer transitions 0/285 dead transitions. [2024-06-21 16:19:16,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 285 transitions, 3794 flow [2024-06-21 16:19:16,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:19:16,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:19:16,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 16:19:16,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-21 16:19:16,261 INFO L175 Difference]: Start difference. First operand has 271 places, 274 transitions, 3187 flow. Second operand 10 states and 126 transitions. [2024-06-21 16:19:16,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 285 transitions, 3794 flow [2024-06-21 16:19:16,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 285 transitions, 3407 flow, removed 56 selfloop flow, removed 7 redundant places. [2024-06-21 16:19:16,501 INFO L231 Difference]: Finished difference. Result has 274 places, 274 transitions, 2892 flow [2024-06-21 16:19:16,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2800, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2892, PETRI_PLACES=274, PETRI_TRANSITIONS=274} [2024-06-21 16:19:16,502 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 243 predicate places. [2024-06-21 16:19:16,502 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 274 transitions, 2892 flow [2024-06-21 16:19:16,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:19:16,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:19:16,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:19:16,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-21 16:19:16,503 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:19:16,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:19:16,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1265132438, now seen corresponding path program 11 times [2024-06-21 16:19:16,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:19:16,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451824992] [2024-06-21 16:19:16,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:19:16,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:19:16,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:19:17,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:19:17,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:19:17,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451824992] [2024-06-21 16:19:17,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451824992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:19:17,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:19:17,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:19:17,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633831311] [2024-06-21 16:19:17,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:19:17,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:19:17,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:19:17,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:19:17,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:19:17,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:19:17,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 274 transitions, 2892 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:19:17,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:19:17,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:19:17,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:19:17,834 INFO L124 PetriNetUnfolderBase]: 565/1020 cut-off events. [2024-06-21 16:19:17,834 INFO L125 PetriNetUnfolderBase]: For 107438/107438 co-relation queries the response was YES. [2024-06-21 16:19:17,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8239 conditions, 1020 events. 565/1020 cut-off events. For 107438/107438 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5217 event pairs, 55 based on Foata normal form. 1/1016 useless extension candidates. Maximal degree in co-relation 8106. Up to 764 conditions per place. [2024-06-21 16:19:17,846 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 203 selfloop transitions, 79 changer transitions 0/285 dead transitions. [2024-06-21 16:19:17,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 285 transitions, 3552 flow [2024-06-21 16:19:17,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:19:17,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:19:17,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 16:19:17,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-21 16:19:17,847 INFO L175 Difference]: Start difference. First operand has 274 places, 274 transitions, 2892 flow. Second operand 10 states and 126 transitions. [2024-06-21 16:19:17,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 285 transitions, 3552 flow [2024-06-21 16:19:18,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 285 transitions, 3447 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-21 16:19:18,063 INFO L231 Difference]: Finished difference. Result has 274 places, 276 transitions, 3030 flow [2024-06-21 16:19:18,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2787, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3030, PETRI_PLACES=274, PETRI_TRANSITIONS=276} [2024-06-21 16:19:18,063 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 243 predicate places. [2024-06-21 16:19:18,063 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 276 transitions, 3030 flow [2024-06-21 16:19:18,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:19:18,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:19:18,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:19:18,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-21 16:19:18,064 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:19:18,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:19:18,064 INFO L85 PathProgramCache]: Analyzing trace with hash 192085279, now seen corresponding path program 1 times [2024-06-21 16:19:18,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:19:18,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201973086] [2024-06-21 16:19:18,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:19:18,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:19:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:19:18,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:19:18,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:19:18,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201973086] [2024-06-21 16:19:18,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201973086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:19:18,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:19:18,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:19:18,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365868970] [2024-06-21 16:19:18,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:19:18,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:19:18,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:19:18,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:19:18,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:19:18,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:19:18,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 276 transitions, 3030 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:19:18,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:19:18,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:19:18,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:19:19,259 INFO L124 PetriNetUnfolderBase]: 569/1025 cut-off events. [2024-06-21 16:19:19,259 INFO L125 PetriNetUnfolderBase]: For 114224/114224 co-relation queries the response was YES. [2024-06-21 16:19:19,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8408 conditions, 1025 events. 569/1025 cut-off events. For 114224/114224 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5230 event pairs, 20 based on Foata normal form. 2/1025 useless extension candidates. Maximal degree in co-relation 8274. Up to 893 conditions per place. [2024-06-21 16:19:19,267 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 269 selfloop transitions, 26 changer transitions 0/298 dead transitions. [2024-06-21 16:19:19,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 298 transitions, 3708 flow [2024-06-21 16:19:19,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:19:19,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:19:19,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 16:19:19,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-21 16:19:19,268 INFO L175 Difference]: Start difference. First operand has 274 places, 276 transitions, 3030 flow. Second operand 10 states and 126 transitions. [2024-06-21 16:19:19,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 298 transitions, 3708 flow [2024-06-21 16:19:19,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 298 transitions, 3481 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-21 16:19:19,517 INFO L231 Difference]: Finished difference. Result has 276 places, 277 transitions, 2885 flow [2024-06-21 16:19:19,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2803, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2885, PETRI_PLACES=276, PETRI_TRANSITIONS=277} [2024-06-21 16:19:19,518 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 245 predicate places. [2024-06-21 16:19:19,518 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 277 transitions, 2885 flow [2024-06-21 16:19:19,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:19:19,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:19:19,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:19:19,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-21 16:19:19,519 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:19:19,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:19:19,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1937840301, now seen corresponding path program 2 times [2024-06-21 16:19:19,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:19:19,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067263566] [2024-06-21 16:19:19,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:19:19,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:19:19,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:19:20,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:19:20,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:19:20,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067263566] [2024-06-21 16:19:20,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067263566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:19:20,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:19:20,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:19:20,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886427906] [2024-06-21 16:19:20,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:19:20,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:19:20,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:19:20,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:19:20,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:19:20,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:19:20,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 277 transitions, 2885 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:19:20,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:19:20,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:19:20,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:19:20,676 INFO L124 PetriNetUnfolderBase]: 580/1051 cut-off events. [2024-06-21 16:19:20,676 INFO L125 PetriNetUnfolderBase]: For 117557/117557 co-relation queries the response was YES. [2024-06-21 16:19:20,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8391 conditions, 1051 events. 580/1051 cut-off events. For 117557/117557 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5433 event pairs, 48 based on Foata normal form. 2/1048 useless extension candidates. Maximal degree in co-relation 8256. Up to 928 conditions per place. [2024-06-21 16:19:20,687 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 270 selfloop transitions, 27 changer transitions 0/300 dead transitions. [2024-06-21 16:19:20,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 300 transitions, 3614 flow [2024-06-21 16:19:20,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:19:20,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:19:20,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-21 16:19:20,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-21 16:19:20,689 INFO L175 Difference]: Start difference. First operand has 276 places, 277 transitions, 2885 flow. Second operand 11 states and 135 transitions. [2024-06-21 16:19:20,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 300 transitions, 3614 flow [2024-06-21 16:19:20,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 300 transitions, 3532 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-21 16:19:20,915 INFO L231 Difference]: Finished difference. Result has 282 places, 285 transitions, 2969 flow [2024-06-21 16:19:20,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2813, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2969, PETRI_PLACES=282, PETRI_TRANSITIONS=285} [2024-06-21 16:19:20,916 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 251 predicate places. [2024-06-21 16:19:20,916 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 285 transitions, 2969 flow [2024-06-21 16:19:20,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:19:20,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:19:20,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:19:20,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-21 16:19:20,917 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:19:20,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:19:20,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1822549131, now seen corresponding path program 3 times [2024-06-21 16:19:20,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:19:20,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560390974] [2024-06-21 16:19:20,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:19:20,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:19:20,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:19:21,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:19:21,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:19:21,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560390974] [2024-06-21 16:19:21,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560390974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:19:21,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:19:21,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:19:21,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458326946] [2024-06-21 16:19:21,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:19:21,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:19:21,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:19:21,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:19:21,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:19:21,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:19:21,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 285 transitions, 2969 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:19:21,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:19:21,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:19:21,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:19:21,957 INFO L124 PetriNetUnfolderBase]: 590/1071 cut-off events. [2024-06-21 16:19:21,957 INFO L125 PetriNetUnfolderBase]: For 120318/120318 co-relation queries the response was YES. [2024-06-21 16:19:21,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8527 conditions, 1071 events. 590/1071 cut-off events. For 120318/120318 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5587 event pairs, 45 based on Foata normal form. 2/1068 useless extension candidates. Maximal degree in co-relation 8388. Up to 960 conditions per place. [2024-06-21 16:19:21,968 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 275 selfloop transitions, 26 changer transitions 0/304 dead transitions. [2024-06-21 16:19:21,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 304 transitions, 3694 flow [2024-06-21 16:19:21,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:19:21,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:19:21,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-21 16:19:21,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 16:19:21,970 INFO L175 Difference]: Start difference. First operand has 282 places, 285 transitions, 2969 flow. Second operand 11 states and 132 transitions. [2024-06-21 16:19:21,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 304 transitions, 3694 flow [2024-06-21 16:19:22,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 304 transitions, 3624 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-21 16:19:22,200 INFO L231 Difference]: Finished difference. Result has 291 places, 290 transitions, 3045 flow [2024-06-21 16:19:22,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2899, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3045, PETRI_PLACES=291, PETRI_TRANSITIONS=290} [2024-06-21 16:19:22,201 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 260 predicate places. [2024-06-21 16:19:22,201 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 290 transitions, 3045 flow [2024-06-21 16:19:22,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:19:22,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:19:22,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:19:22,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-21 16:19:22,202 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:19:22,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:19:22,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1678571359, now seen corresponding path program 1 times [2024-06-21 16:19:22,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:19:22,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305180889] [2024-06-21 16:19:22,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:19:22,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:19:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:19:22,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:19:22,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:19:22,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305180889] [2024-06-21 16:19:22,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305180889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:19:22,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:19:22,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:19:22,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760496094] [2024-06-21 16:19:22,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:19:22,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:19:22,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:19:22,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:19:22,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:19:23,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:19:23,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 290 transitions, 3045 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:19:23,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:19:23,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:19:23,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:19:23,440 INFO L124 PetriNetUnfolderBase]: 591/1074 cut-off events. [2024-06-21 16:19:23,441 INFO L125 PetriNetUnfolderBase]: For 118757/118757 co-relation queries the response was YES. [2024-06-21 16:19:23,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8466 conditions, 1074 events. 591/1074 cut-off events. For 118757/118757 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5641 event pairs, 34 based on Foata normal form. 2/1074 useless extension candidates. Maximal degree in co-relation 8324. Up to 940 conditions per place. [2024-06-21 16:19:23,453 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 272 selfloop transitions, 37 changer transitions 0/312 dead transitions. [2024-06-21 16:19:23,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 312 transitions, 3793 flow [2024-06-21 16:19:23,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:19:23,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:19:23,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-21 16:19:23,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-21 16:19:23,454 INFO L175 Difference]: Start difference. First operand has 291 places, 290 transitions, 3045 flow. Second operand 11 states and 138 transitions. [2024-06-21 16:19:23,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 312 transitions, 3793 flow [2024-06-21 16:19:23,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 312 transitions, 3709 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-21 16:19:23,678 INFO L231 Difference]: Finished difference. Result has 296 places, 292 transitions, 3101 flow [2024-06-21 16:19:23,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2963, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3101, PETRI_PLACES=296, PETRI_TRANSITIONS=292} [2024-06-21 16:19:23,678 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 265 predicate places. [2024-06-21 16:19:23,678 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 292 transitions, 3101 flow [2024-06-21 16:19:23,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:19:23,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:19:23,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:19:23,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-21 16:19:23,679 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:19:23,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:19:23,679 INFO L85 PathProgramCache]: Analyzing trace with hash 537729905, now seen corresponding path program 2 times [2024-06-21 16:19:23,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:19:23,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450626410] [2024-06-21 16:19:23,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:19:23,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:19:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:19:24,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:19:24,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:19:24,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450626410] [2024-06-21 16:19:24,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450626410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:19:24,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:19:24,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:19:24,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072082428] [2024-06-21 16:19:24,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:19:24,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:19:24,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:19:24,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:19:24,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:19:24,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:19:24,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 292 transitions, 3101 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:19:24,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:19:24,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:19:24,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:19:25,015 INFO L124 PetriNetUnfolderBase]: 607/1099 cut-off events. [2024-06-21 16:19:25,015 INFO L125 PetriNetUnfolderBase]: For 128127/128127 co-relation queries the response was YES. [2024-06-21 16:19:25,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9020 conditions, 1099 events. 607/1099 cut-off events. For 128127/128127 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 5762 event pairs, 31 based on Foata normal form. 2/1098 useless extension candidates. Maximal degree in co-relation 8876. Up to 936 conditions per place. [2024-06-21 16:19:25,027 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 271 selfloop transitions, 44 changer transitions 0/318 dead transitions. [2024-06-21 16:19:25,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 318 transitions, 4137 flow [2024-06-21 16:19:25,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:19:25,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:19:25,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-21 16:19:25,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-21 16:19:25,052 INFO L175 Difference]: Start difference. First operand has 296 places, 292 transitions, 3101 flow. Second operand 11 states and 140 transitions. [2024-06-21 16:19:25,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 318 transitions, 4137 flow [2024-06-21 16:19:25,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 318 transitions, 4007 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-21 16:19:25,422 INFO L231 Difference]: Finished difference. Result has 298 places, 297 transitions, 3200 flow [2024-06-21 16:19:25,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2971, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3200, PETRI_PLACES=298, PETRI_TRANSITIONS=297} [2024-06-21 16:19:25,423 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 267 predicate places. [2024-06-21 16:19:25,423 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 297 transitions, 3200 flow [2024-06-21 16:19:25,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:19:25,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:19:25,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:19:25,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-21 16:19:25,424 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:19:25,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:19:25,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1822371191, now seen corresponding path program 3 times [2024-06-21 16:19:25,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:19:25,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789524048] [2024-06-21 16:19:25,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:19:25,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:19:25,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:19:26,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:19:26,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:19:26,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789524048] [2024-06-21 16:19:26,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789524048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:19:26,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:19:26,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:19:26,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46566538] [2024-06-21 16:19:26,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:19:26,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:19:26,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:19:26,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:19:26,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:19:26,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:19:26,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 297 transitions, 3200 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:19:26,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:19:26,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:19:26,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:19:27,364 INFO L124 PetriNetUnfolderBase]: 605/1096 cut-off events. [2024-06-21 16:19:27,365 INFO L125 PetriNetUnfolderBase]: For 124950/124950 co-relation queries the response was YES. [2024-06-21 16:19:27,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8926 conditions, 1096 events. 605/1096 cut-off events. For 124950/124950 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 5756 event pairs, 27 based on Foata normal form. 1/1094 useless extension candidates. Maximal degree in co-relation 8781. Up to 950 conditions per place. [2024-06-21 16:19:27,376 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 275 selfloop transitions, 41 changer transitions 0/319 dead transitions. [2024-06-21 16:19:27,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 319 transitions, 4017 flow [2024-06-21 16:19:27,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:19:27,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:19:27,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-21 16:19:27,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-21 16:19:27,377 INFO L175 Difference]: Start difference. First operand has 298 places, 297 transitions, 3200 flow. Second operand 11 states and 138 transitions. [2024-06-21 16:19:27,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 319 transitions, 4017 flow [2024-06-21 16:19:27,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 319 transitions, 3841 flow, removed 63 selfloop flow, removed 7 redundant places. [2024-06-21 16:19:27,728 INFO L231 Difference]: Finished difference. Result has 304 places, 301 transitions, 3262 flow [2024-06-21 16:19:27,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3076, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3262, PETRI_PLACES=304, PETRI_TRANSITIONS=301} [2024-06-21 16:19:27,728 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 273 predicate places. [2024-06-21 16:19:27,728 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 301 transitions, 3262 flow [2024-06-21 16:19:27,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:19:27,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:19:27,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:19:27,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-21 16:19:27,729 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:19:27,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:19:27,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1656909997, now seen corresponding path program 4 times [2024-06-21 16:19:27,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:19:27,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460534695] [2024-06-21 16:19:27,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:19:27,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:19:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:19:28,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:19:28,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:19:28,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460534695] [2024-06-21 16:19:28,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460534695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:19:28,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:19:28,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:19:28,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703264574] [2024-06-21 16:19:28,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:19:28,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:19:28,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:19:28,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:19:28,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:19:28,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:19:28,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 301 transitions, 3262 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:19:28,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:19:28,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:19:28,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:19:29,119 INFO L124 PetriNetUnfolderBase]: 609/1106 cut-off events. [2024-06-21 16:19:29,119 INFO L125 PetriNetUnfolderBase]: For 131965/131965 co-relation queries the response was YES. [2024-06-21 16:19:29,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9029 conditions, 1106 events. 609/1106 cut-off events. For 131965/131965 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 5822 event pairs, 31 based on Foata normal form. 2/1106 useless extension candidates. Maximal degree in co-relation 8880. Up to 945 conditions per place. [2024-06-21 16:19:29,131 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 276 selfloop transitions, 39 changer transitions 0/318 dead transitions. [2024-06-21 16:19:29,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 318 transitions, 3975 flow [2024-06-21 16:19:29,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:19:29,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:19:29,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-21 16:19:29,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-21 16:19:29,133 INFO L175 Difference]: Start difference. First operand has 304 places, 301 transitions, 3262 flow. Second operand 10 states and 125 transitions. [2024-06-21 16:19:29,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 318 transitions, 3975 flow [2024-06-21 16:19:29,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 318 transitions, 3851 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-21 16:19:29,473 INFO L231 Difference]: Finished difference. Result has 308 places, 304 transitions, 3276 flow [2024-06-21 16:19:29,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3138, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3276, PETRI_PLACES=308, PETRI_TRANSITIONS=304} [2024-06-21 16:19:29,474 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 277 predicate places. [2024-06-21 16:19:29,474 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 304 transitions, 3276 flow [2024-06-21 16:19:29,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:19:29,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:19:29,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:19:29,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-21 16:19:29,475 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:19:29,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:19:29,475 INFO L85 PathProgramCache]: Analyzing trace with hash -554339337, now seen corresponding path program 4 times [2024-06-21 16:19:29,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:19:29,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481290016] [2024-06-21 16:19:29,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:19:29,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:19:29,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:19:30,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:19:30,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:19:30,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481290016] [2024-06-21 16:19:30,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481290016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:19:30,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:19:30,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:19:30,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126690638] [2024-06-21 16:19:30,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:19:30,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:19:30,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:19:30,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:19:30,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:19:30,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:19:30,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 304 transitions, 3276 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:19:30,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:19:30,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:19:30,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:19:31,155 INFO L124 PetriNetUnfolderBase]: 637/1158 cut-off events. [2024-06-21 16:19:31,156 INFO L125 PetriNetUnfolderBase]: For 155179/155179 co-relation queries the response was YES. [2024-06-21 16:19:31,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10098 conditions, 1158 events. 637/1158 cut-off events. For 155179/155179 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6184 event pairs, 40 based on Foata normal form. 1/1156 useless extension candidates. Maximal degree in co-relation 9947. Up to 890 conditions per place. [2024-06-21 16:19:31,169 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 261 selfloop transitions, 69 changer transitions 0/333 dead transitions. [2024-06-21 16:19:31,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 333 transitions, 4884 flow [2024-06-21 16:19:31,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:19:31,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:19:31,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-21 16:19:31,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-21 16:19:31,170 INFO L175 Difference]: Start difference. First operand has 308 places, 304 transitions, 3276 flow. Second operand 11 states and 146 transitions. [2024-06-21 16:19:31,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 333 transitions, 4884 flow [2024-06-21 16:19:31,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 333 transitions, 4778 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-21 16:19:31,523 INFO L231 Difference]: Finished difference. Result has 313 places, 313 transitions, 3597 flow [2024-06-21 16:19:31,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3170, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3597, PETRI_PLACES=313, PETRI_TRANSITIONS=313} [2024-06-21 16:19:31,523 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 282 predicate places. [2024-06-21 16:19:31,523 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 313 transitions, 3597 flow [2024-06-21 16:19:31,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:19:31,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:19:31,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:19:31,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-21 16:19:31,524 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:19:31,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:19:31,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1391205455, now seen corresponding path program 5 times [2024-06-21 16:19:31,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:19:31,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870916111] [2024-06-21 16:19:31,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:19:31,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:19:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:19:32,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:19:32,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:19:32,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870916111] [2024-06-21 16:19:32,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870916111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:19:32,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:19:32,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:19:32,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721218801] [2024-06-21 16:19:32,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:19:32,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:19:32,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:19:32,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:19:32,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:19:32,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:19:32,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 313 transitions, 3597 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:19:32,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:19:32,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:19:32,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:19:32,874 INFO L124 PetriNetUnfolderBase]: 648/1180 cut-off events. [2024-06-21 16:19:32,875 INFO L125 PetriNetUnfolderBase]: For 170391/170391 co-relation queries the response was YES. [2024-06-21 16:19:32,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10583 conditions, 1180 events. 648/1180 cut-off events. For 170391/170391 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6345 event pairs, 31 based on Foata normal form. 2/1179 useless extension candidates. Maximal degree in co-relation 10430. Up to 902 conditions per place. [2024-06-21 16:19:32,888 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 266 selfloop transitions, 70 changer transitions 0/339 dead transitions. [2024-06-21 16:19:32,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 339 transitions, 5133 flow [2024-06-21 16:19:32,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:19:32,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:19:32,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-21 16:19:32,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-21 16:19:32,889 INFO L175 Difference]: Start difference. First operand has 313 places, 313 transitions, 3597 flow. Second operand 11 states and 147 transitions. [2024-06-21 16:19:32,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 339 transitions, 5133 flow [2024-06-21 16:19:33,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 339 transitions, 4962 flow, removed 64 selfloop flow, removed 5 redundant places. [2024-06-21 16:19:33,281 INFO L231 Difference]: Finished difference. Result has 319 places, 318 transitions, 3728 flow [2024-06-21 16:19:33,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3456, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3728, PETRI_PLACES=319, PETRI_TRANSITIONS=318} [2024-06-21 16:19:33,282 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 288 predicate places. [2024-06-21 16:19:33,282 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 318 transitions, 3728 flow [2024-06-21 16:19:33,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:19:33,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:19:33,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:19:33,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-21 16:19:33,283 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:19:33,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:19:33,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1390974815, now seen corresponding path program 6 times [2024-06-21 16:19:33,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:19:33,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159732196] [2024-06-21 16:19:33,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:19:33,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:19:33,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:19:34,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:19:34,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:19:34,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159732196] [2024-06-21 16:19:34,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159732196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:19:34,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:19:34,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:19:34,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383551599] [2024-06-21 16:19:34,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:19:34,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:19:34,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:19:34,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:19:34,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:19:34,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:19:34,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 318 transitions, 3728 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:19:34,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:19:34,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:19:34,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:19:34,818 INFO L124 PetriNetUnfolderBase]: 646/1177 cut-off events. [2024-06-21 16:19:34,819 INFO L125 PetriNetUnfolderBase]: For 161674/161674 co-relation queries the response was YES. [2024-06-21 16:19:34,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10432 conditions, 1177 events. 646/1177 cut-off events. For 161674/161674 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6317 event pairs, 29 based on Foata normal form. 1/1175 useless extension candidates. Maximal degree in co-relation 10277. Up to 957 conditions per place. [2024-06-21 16:19:34,832 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 273 selfloop transitions, 63 changer transitions 0/339 dead transitions. [2024-06-21 16:19:34,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 339 transitions, 4825 flow [2024-06-21 16:19:34,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:19:34,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:19:34,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-21 16:19:34,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-21 16:19:34,833 INFO L175 Difference]: Start difference. First operand has 319 places, 318 transitions, 3728 flow. Second operand 11 states and 139 transitions. [2024-06-21 16:19:34,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 339 transitions, 4825 flow [2024-06-21 16:19:35,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 339 transitions, 4616 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-21 16:19:35,256 INFO L231 Difference]: Finished difference. Result has 324 places, 324 transitions, 3872 flow [2024-06-21 16:19:35,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3557, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3872, PETRI_PLACES=324, PETRI_TRANSITIONS=324} [2024-06-21 16:19:35,257 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 293 predicate places. [2024-06-21 16:19:35,257 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 324 transitions, 3872 flow [2024-06-21 16:19:35,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:19:35,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:19:35,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:19:35,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-21 16:19:35,257 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:19:35,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:19:35,258 INFO L85 PathProgramCache]: Analyzing trace with hash -554093259, now seen corresponding path program 1 times [2024-06-21 16:19:35,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:19:35,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387080643] [2024-06-21 16:19:35,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:19:35,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:19:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:19:36,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:19:36,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:19:36,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387080643] [2024-06-21 16:19:36,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387080643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:19:36,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:19:36,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:19:36,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422003779] [2024-06-21 16:19:36,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:19:36,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:19:36,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:19:36,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:19:36,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:19:36,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:19:36,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 324 transitions, 3872 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:19:36,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:19:36,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:19:36,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:19:36,743 INFO L124 PetriNetUnfolderBase]: 650/1185 cut-off events. [2024-06-21 16:19:36,743 INFO L125 PetriNetUnfolderBase]: For 170053/170053 co-relation queries the response was YES. [2024-06-21 16:19:36,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10522 conditions, 1185 events. 650/1185 cut-off events. For 170053/170053 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6398 event pairs, 30 based on Foata normal form. 2/1185 useless extension candidates. Maximal degree in co-relation 10365. Up to 1070 conditions per place. [2024-06-21 16:19:36,757 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 313 selfloop transitions, 24 changer transitions 0/340 dead transitions. [2024-06-21 16:19:36,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 340 transitions, 4617 flow [2024-06-21 16:19:36,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:19:36,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:19:36,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-21 16:19:36,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-21 16:19:36,759 INFO L175 Difference]: Start difference. First operand has 324 places, 324 transitions, 3872 flow. Second operand 10 states and 122 transitions. [2024-06-21 16:19:36,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 340 transitions, 4617 flow [2024-06-21 16:19:37,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 340 transitions, 4485 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-21 16:19:37,242 INFO L231 Difference]: Finished difference. Result has 328 places, 325 transitions, 3820 flow [2024-06-21 16:19:37,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3740, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3820, PETRI_PLACES=328, PETRI_TRANSITIONS=325} [2024-06-21 16:19:37,243 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 297 predicate places. [2024-06-21 16:19:37,243 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 325 transitions, 3820 flow [2024-06-21 16:19:37,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:19:37,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:19:37,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:19:37,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-21 16:19:37,243 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:19:37,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:19:37,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1397468075, now seen corresponding path program 7 times [2024-06-21 16:19:37,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:19:37,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957413289] [2024-06-21 16:19:37,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:19:37,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:19:37,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:19:38,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:19:38,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:19:38,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957413289] [2024-06-21 16:19:38,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957413289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:19:38,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:19:38,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:19:38,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566642130] [2024-06-21 16:19:38,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:19:38,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:19:38,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:19:38,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:19:38,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:19:38,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:19:38,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 325 transitions, 3820 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:19:38,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:19:38,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:19:38,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:19:38,898 INFO L124 PetriNetUnfolderBase]: 658/1202 cut-off events. [2024-06-21 16:19:38,899 INFO L125 PetriNetUnfolderBase]: For 174130/174130 co-relation queries the response was YES. [2024-06-21 16:19:38,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10757 conditions, 1202 events. 658/1202 cut-off events. For 174130/174130 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6503 event pairs, 29 based on Foata normal form. 1/1200 useless extension candidates. Maximal degree in co-relation 10598. Up to 1016 conditions per place. [2024-06-21 16:19:38,913 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 294 selfloop transitions, 49 changer transitions 0/346 dead transitions. [2024-06-21 16:19:38,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 346 transitions, 5104 flow [2024-06-21 16:19:38,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:19:38,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:19:38,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-21 16:19:38,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-21 16:19:38,914 INFO L175 Difference]: Start difference. First operand has 328 places, 325 transitions, 3820 flow. Second operand 11 states and 142 transitions. [2024-06-21 16:19:38,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 346 transitions, 5104 flow [2024-06-21 16:19:39,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 346 transitions, 5034 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-21 16:19:39,396 INFO L231 Difference]: Finished difference. Result has 331 places, 329 transitions, 3985 flow [2024-06-21 16:19:39,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3750, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3985, PETRI_PLACES=331, PETRI_TRANSITIONS=329} [2024-06-21 16:19:39,396 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 300 predicate places. [2024-06-21 16:19:39,396 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 329 transitions, 3985 flow [2024-06-21 16:19:39,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:19:39,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:19:39,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:19:39,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-21 16:19:39,397 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:19:39,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:19:39,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1656725547, now seen corresponding path program 8 times [2024-06-21 16:19:39,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:19:39,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147737191] [2024-06-21 16:19:39,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:19:39,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:19:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:19:40,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:19:40,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:19:40,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147737191] [2024-06-21 16:19:40,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147737191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:19:40,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:19:40,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:19:40,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591625262] [2024-06-21 16:19:40,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:19:40,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:19:40,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:19:40,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:19:40,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:19:40,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:19:40,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 329 transitions, 3985 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:19:40,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:19:40,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:19:40,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:19:40,979 INFO L124 PetriNetUnfolderBase]: 654/1196 cut-off events. [2024-06-21 16:19:40,979 INFO L125 PetriNetUnfolderBase]: For 171992/171992 co-relation queries the response was YES. [2024-06-21 16:19:40,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10520 conditions, 1196 events. 654/1196 cut-off events. For 171992/171992 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6487 event pairs, 29 based on Foata normal form. 2/1195 useless extension candidates. Maximal degree in co-relation 10360. Up to 1013 conditions per place. [2024-06-21 16:19:40,994 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 294 selfloop transitions, 48 changer transitions 0/345 dead transitions. [2024-06-21 16:19:40,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 345 transitions, 4931 flow [2024-06-21 16:19:40,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:19:40,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:19:40,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-21 16:19:40,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-21 16:19:40,995 INFO L175 Difference]: Start difference. First operand has 331 places, 329 transitions, 3985 flow. Second operand 11 states and 140 transitions. [2024-06-21 16:19:40,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 345 transitions, 4931 flow [2024-06-21 16:19:41,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 345 transitions, 4618 flow, removed 91 selfloop flow, removed 9 redundant places. [2024-06-21 16:19:41,450 INFO L231 Difference]: Finished difference. Result has 333 places, 329 transitions, 3782 flow [2024-06-21 16:19:41,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3678, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3782, PETRI_PLACES=333, PETRI_TRANSITIONS=329} [2024-06-21 16:19:41,450 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 302 predicate places. [2024-06-21 16:19:41,450 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 329 transitions, 3782 flow [2024-06-21 16:19:41,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:19:41,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:19:41,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:19:41,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-21 16:19:41,451 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:19:41,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:19:41,451 INFO L85 PathProgramCache]: Analyzing trace with hash 897117045, now seen corresponding path program 5 times [2024-06-21 16:19:41,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:19:41,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609579784] [2024-06-21 16:19:41,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:19:41,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:19:41,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:19:42,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:19:42,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:19:42,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609579784] [2024-06-21 16:19:42,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609579784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:19:42,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:19:42,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:19:42,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770363194] [2024-06-21 16:19:42,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:19:42,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:19:42,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:19:42,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:19:42,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:19:42,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:19:42,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 329 transitions, 3782 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:19:42,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:19:42,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:19:42,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:19:42,735 INFO L124 PetriNetUnfolderBase]: 658/1205 cut-off events. [2024-06-21 16:19:42,735 INFO L125 PetriNetUnfolderBase]: For 174374/174374 co-relation queries the response was YES. [2024-06-21 16:19:42,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10386 conditions, 1205 events. 658/1205 cut-off events. For 174374/174374 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6538 event pairs, 32 based on Foata normal form. 2/1205 useless extension candidates. Maximal degree in co-relation 10226. Up to 1037 conditions per place. [2024-06-21 16:19:42,749 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 304 selfloop transitions, 37 changer transitions 0/344 dead transitions. [2024-06-21 16:19:42,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 344 transitions, 4543 flow [2024-06-21 16:19:42,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:19:42,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:19:42,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-21 16:19:42,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-21 16:19:42,751 INFO L175 Difference]: Start difference. First operand has 333 places, 329 transitions, 3782 flow. Second operand 10 states and 123 transitions. [2024-06-21 16:19:42,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 344 transitions, 4543 flow [2024-06-21 16:19:43,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 344 transitions, 4449 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-21 16:19:43,258 INFO L231 Difference]: Finished difference. Result has 335 places, 332 transitions, 3824 flow [2024-06-21 16:19:43,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3688, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3824, PETRI_PLACES=335, PETRI_TRANSITIONS=332} [2024-06-21 16:19:43,258 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 304 predicate places. [2024-06-21 16:19:43,258 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 332 transitions, 3824 flow [2024-06-21 16:19:43,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:19:43,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:19:43,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:19:43,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-21 16:19:43,268 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:19:43,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:19:43,268 INFO L85 PathProgramCache]: Analyzing trace with hash -502054567, now seen corresponding path program 2 times [2024-06-21 16:19:43,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:19:43,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353640212] [2024-06-21 16:19:43,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:19:43,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:19:43,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:19:44,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:19:44,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:19:44,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353640212] [2024-06-21 16:19:44,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353640212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:19:44,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:19:44,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:19:44,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25796518] [2024-06-21 16:19:44,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:19:44,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:19:44,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:19:44,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:19:44,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:19:44,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:19:44,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 332 transitions, 3824 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:19:44,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:19:44,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:19:44,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:19:44,915 INFO L124 PetriNetUnfolderBase]: 662/1212 cut-off events. [2024-06-21 16:19:44,915 INFO L125 PetriNetUnfolderBase]: For 177756/177756 co-relation queries the response was YES. [2024-06-21 16:19:44,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10470 conditions, 1212 events. 662/1212 cut-off events. For 177756/177756 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 6613 event pairs, 29 based on Foata normal form. 2/1212 useless extension candidates. Maximal degree in co-relation 10308. Up to 1085 conditions per place. [2024-06-21 16:19:44,932 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 319 selfloop transitions, 26 changer transitions 0/348 dead transitions. [2024-06-21 16:19:44,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 348 transitions, 4595 flow [2024-06-21 16:19:44,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:19:44,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:19:44,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-21 16:19:44,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-21 16:19:44,933 INFO L175 Difference]: Start difference. First operand has 335 places, 332 transitions, 3824 flow. Second operand 11 states and 130 transitions. [2024-06-21 16:19:44,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 348 transitions, 4595 flow [2024-06-21 16:19:45,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 348 transitions, 4491 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-21 16:19:45,448 INFO L231 Difference]: Finished difference. Result has 340 places, 334 transitions, 3823 flow [2024-06-21 16:19:45,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3720, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3823, PETRI_PLACES=340, PETRI_TRANSITIONS=334} [2024-06-21 16:19:45,448 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 309 predicate places. [2024-06-21 16:19:45,449 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 334 transitions, 3823 flow [2024-06-21 16:19:45,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:19:45,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:19:45,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:19:45,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-21 16:19:45,449 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:19:45,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:19:45,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1393048295, now seen corresponding path program 3 times [2024-06-21 16:19:45,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:19:45,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487611483] [2024-06-21 16:19:45,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:19:45,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:19:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:19:46,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:19:46,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:19:46,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487611483] [2024-06-21 16:19:46,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487611483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:19:46,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:19:46,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:19:46,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619773863] [2024-06-21 16:19:46,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:19:46,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:19:46,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:19:46,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:19:46,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:19:46,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:19:46,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 334 transitions, 3823 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:19:46,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:19:46,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:19:46,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:19:47,111 INFO L124 PetriNetUnfolderBase]: 673/1229 cut-off events. [2024-06-21 16:19:47,111 INFO L125 PetriNetUnfolderBase]: For 191875/191875 co-relation queries the response was YES. [2024-06-21 16:19:47,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10823 conditions, 1229 events. 673/1229 cut-off events. For 191875/191875 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6726 event pairs, 31 based on Foata normal form. 2/1229 useless extension candidates. Maximal degree in co-relation 10659. Up to 1040 conditions per place. [2024-06-21 16:19:47,125 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 301 selfloop transitions, 48 changer transitions 0/352 dead transitions. [2024-06-21 16:19:47,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 352 transitions, 4838 flow [2024-06-21 16:19:47,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:19:47,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:19:47,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-21 16:19:47,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-21 16:19:47,126 INFO L175 Difference]: Start difference. First operand has 340 places, 334 transitions, 3823 flow. Second operand 11 states and 135 transitions. [2024-06-21 16:19:47,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 352 transitions, 4838 flow [2024-06-21 16:19:47,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 352 transitions, 4754 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-21 16:19:47,675 INFO L231 Difference]: Finished difference. Result has 343 places, 336 transitions, 3901 flow [2024-06-21 16:19:47,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3739, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3901, PETRI_PLACES=343, PETRI_TRANSITIONS=336} [2024-06-21 16:19:47,675 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-21 16:19:47,675 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 336 transitions, 3901 flow [2024-06-21 16:19:47,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:19:47,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:19:47,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:19:47,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-21 16:19:47,676 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:19:47,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:19:47,676 INFO L85 PathProgramCache]: Analyzing trace with hash 897294985, now seen corresponding path program 9 times [2024-06-21 16:19:47,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:19:47,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269332242] [2024-06-21 16:19:47,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:19:47,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:19:47,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:19:48,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:19:48,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:19:48,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269332242] [2024-06-21 16:19:48,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269332242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:19:48,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:19:48,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:19:48,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652128003] [2024-06-21 16:19:48,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:19:48,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:19:48,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:19:48,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:19:48,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:19:48,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:19:48,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 336 transitions, 3901 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:19:48,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:19:48,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:19:48,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:19:49,323 INFO L124 PetriNetUnfolderBase]: 691/1263 cut-off events. [2024-06-21 16:19:49,323 INFO L125 PetriNetUnfolderBase]: For 207762/207762 co-relation queries the response was YES. [2024-06-21 16:19:49,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11584 conditions, 1263 events. 691/1263 cut-off events. For 207762/207762 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6945 event pairs, 38 based on Foata normal form. 1/1262 useless extension candidates. Maximal degree in co-relation 11419. Up to 1059 conditions per place. [2024-06-21 16:19:49,338 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 303 selfloop transitions, 51 changer transitions 0/357 dead transitions. [2024-06-21 16:19:49,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 357 transitions, 5285 flow [2024-06-21 16:19:49,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:19:49,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:19:49,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-21 16:19:49,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-21 16:19:49,339 INFO L175 Difference]: Start difference. First operand has 343 places, 336 transitions, 3901 flow. Second operand 11 states and 141 transitions. [2024-06-21 16:19:49,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 357 transitions, 5285 flow [2024-06-21 16:19:49,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 357 transitions, 5181 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-21 16:19:49,960 INFO L231 Difference]: Finished difference. Result has 346 places, 343 transitions, 4126 flow [2024-06-21 16:19:49,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3797, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4126, PETRI_PLACES=346, PETRI_TRANSITIONS=343} [2024-06-21 16:19:49,961 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 315 predicate places. [2024-06-21 16:19:49,961 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 343 transitions, 4126 flow [2024-06-21 16:19:49,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:19:49,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:19:49,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:19:49,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-21 16:19:49,962 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:19:49,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:19:49,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1125196135, now seen corresponding path program 10 times [2024-06-21 16:19:49,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:19:49,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777413064] [2024-06-21 16:19:49,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:19:49,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:19:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:19:51,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:19:51,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:19:51,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777413064] [2024-06-21 16:19:51,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777413064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:19:51,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:19:51,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:19:51,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665419387] [2024-06-21 16:19:51,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:19:51,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:19:51,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:19:51,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:19:51,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:19:51,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:19:51,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 343 transitions, 4126 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:19:51,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:19:51,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:19:51,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:19:51,796 INFO L124 PetriNetUnfolderBase]: 719/1316 cut-off events. [2024-06-21 16:19:51,797 INFO L125 PetriNetUnfolderBase]: For 243166/243166 co-relation queries the response was YES. [2024-06-21 16:19:51,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12844 conditions, 1316 events. 719/1316 cut-off events. For 243166/243166 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7302 event pairs, 40 based on Foata normal form. 1/1315 useless extension candidates. Maximal degree in co-relation 12679. Up to 843 conditions per place. [2024-06-21 16:19:51,812 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 251 selfloop transitions, 116 changer transitions 0/370 dead transitions. [2024-06-21 16:19:51,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 370 transitions, 5900 flow [2024-06-21 16:19:51,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:19:51,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:19:51,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-21 16:19:51,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-21 16:19:51,814 INFO L175 Difference]: Start difference. First operand has 346 places, 343 transitions, 4126 flow. Second operand 11 states and 148 transitions. [2024-06-21 16:19:51,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 370 transitions, 5900 flow [2024-06-21 16:19:52,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 370 transitions, 5748 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-21 16:19:52,454 INFO L231 Difference]: Finished difference. Result has 352 places, 352 transitions, 4527 flow [2024-06-21 16:19:52,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3974, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4527, PETRI_PLACES=352, PETRI_TRANSITIONS=352} [2024-06-21 16:19:52,455 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 321 predicate places. [2024-06-21 16:19:52,455 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 352 transitions, 4527 flow [2024-06-21 16:19:52,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:19:52,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:19:52,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:19:52,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-21 16:19:52,456 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:19:52,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:19:52,456 INFO L85 PathProgramCache]: Analyzing trace with hash 903551095, now seen corresponding path program 11 times [2024-06-21 16:19:52,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:19:52,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613331563] [2024-06-21 16:19:52,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:19:52,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:19:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:19:53,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:19:53,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:19:53,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613331563] [2024-06-21 16:19:53,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613331563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:19:53,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:19:53,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:19:53,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611307032] [2024-06-21 16:19:53,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:19:53,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:19:53,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:19:53,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:19:53,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:19:53,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:19:53,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 352 transitions, 4527 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:19:53,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:19:53,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:19:53,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:19:54,261 INFO L124 PetriNetUnfolderBase]: 730/1338 cut-off events. [2024-06-21 16:19:54,261 INFO L125 PetriNetUnfolderBase]: For 261100/261100 co-relation queries the response was YES. [2024-06-21 16:19:54,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13444 conditions, 1338 events. 730/1338 cut-off events. For 261100/261100 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7481 event pairs, 40 based on Foata normal form. 2/1338 useless extension candidates. Maximal degree in co-relation 13276. Up to 1107 conditions per place. [2024-06-21 16:19:54,277 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 317 selfloop transitions, 59 changer transitions 0/379 dead transitions. [2024-06-21 16:19:54,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 379 transitions, 6328 flow [2024-06-21 16:19:54,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 16:19:54,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 16:19:54,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 164 transitions. [2024-06-21 16:19:54,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942307692307692 [2024-06-21 16:19:54,279 INFO L175 Difference]: Start difference. First operand has 352 places, 352 transitions, 4527 flow. Second operand 13 states and 164 transitions. [2024-06-21 16:19:54,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 379 transitions, 6328 flow [2024-06-21 16:19:54,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 379 transitions, 6142 flow, removed 66 selfloop flow, removed 5 redundant places. [2024-06-21 16:19:54,960 INFO L231 Difference]: Finished difference. Result has 363 places, 362 transitions, 4856 flow [2024-06-21 16:19:54,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4349, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4856, PETRI_PLACES=363, PETRI_TRANSITIONS=362} [2024-06-21 16:19:54,961 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 332 predicate places. [2024-06-21 16:19:54,961 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 362 transitions, 4856 flow [2024-06-21 16:19:54,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:19:54,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:19:54,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:19:54,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-21 16:19:54,961 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:19:54,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:19:54,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1393038065, now seen corresponding path program 4 times [2024-06-21 16:19:54,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:19:54,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281617869] [2024-06-21 16:19:54,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:19:54,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:19:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:19:56,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:19:56,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:19:56,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281617869] [2024-06-21 16:19:56,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281617869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:19:56,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:19:56,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:19:56,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882194266] [2024-06-21 16:19:56,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:19:56,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:19:56,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:19:56,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:19:56,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:19:56,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:19:56,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 362 transitions, 4856 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:19:56,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:19:56,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:19:56,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:19:56,640 INFO L124 PetriNetUnfolderBase]: 737/1350 cut-off events. [2024-06-21 16:19:56,641 INFO L125 PetriNetUnfolderBase]: For 269495/269495 co-relation queries the response was YES. [2024-06-21 16:19:56,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13623 conditions, 1350 events. 737/1350 cut-off events. For 269495/269495 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7581 event pairs, 36 based on Foata normal form. 2/1350 useless extension candidates. Maximal degree in co-relation 13450. Up to 1175 conditions per place. [2024-06-21 16:19:56,658 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 329 selfloop transitions, 47 changer transitions 0/379 dead transitions. [2024-06-21 16:19:56,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 379 transitions, 5697 flow [2024-06-21 16:19:56,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:19:56,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:19:56,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-21 16:19:56,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-21 16:19:56,659 INFO L175 Difference]: Start difference. First operand has 363 places, 362 transitions, 4856 flow. Second operand 11 states and 133 transitions. [2024-06-21 16:19:56,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 379 transitions, 5697 flow [2024-06-21 16:19:57,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 379 transitions, 5455 flow, removed 98 selfloop flow, removed 5 redundant places. [2024-06-21 16:19:57,434 INFO L231 Difference]: Finished difference. Result has 369 places, 365 transitions, 4762 flow [2024-06-21 16:19:57,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4614, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4762, PETRI_PLACES=369, PETRI_TRANSITIONS=365} [2024-06-21 16:19:57,435 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 338 predicate places. [2024-06-21 16:19:57,435 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 365 transitions, 4762 flow [2024-06-21 16:19:57,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:19:57,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:19:57,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:19:57,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-21 16:19:57,435 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:19:57,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:19:57,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1392740837, now seen corresponding path program 12 times [2024-06-21 16:19:57,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:19:57,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455270517] [2024-06-21 16:19:57,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:19:57,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:19:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:19:58,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:19:58,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:19:58,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455270517] [2024-06-21 16:19:58,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455270517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:19:58,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:19:58,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:19:58,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839068445] [2024-06-21 16:19:58,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:19:58,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:19:58,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:19:58,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:19:58,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:19:58,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:19:58,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 365 transitions, 4762 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:19:58,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:19:58,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:19:58,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:19:58,937 INFO L124 PetriNetUnfolderBase]: 748/1373 cut-off events. [2024-06-21 16:19:58,937 INFO L125 PetriNetUnfolderBase]: For 278286/278286 co-relation queries the response was YES. [2024-06-21 16:19:58,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13845 conditions, 1373 events. 748/1373 cut-off events. For 278286/278286 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7735 event pairs, 41 based on Foata normal form. 2/1373 useless extension candidates. Maximal degree in co-relation 13670. Up to 877 conditions per place. [2024-06-21 16:19:58,953 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 249 selfloop transitions, 134 changer transitions 0/386 dead transitions. [2024-06-21 16:19:58,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 386 transitions, 6171 flow [2024-06-21 16:19:58,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:19:58,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:19:58,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-21 16:19:58,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-21 16:19:58,955 INFO L175 Difference]: Start difference. First operand has 369 places, 365 transitions, 4762 flow. Second operand 11 states and 146 transitions. [2024-06-21 16:19:58,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 386 transitions, 6171 flow [2024-06-21 16:19:59,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 386 transitions, 6053 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-21 16:19:59,697 INFO L231 Difference]: Finished difference. Result has 372 places, 370 transitions, 5042 flow [2024-06-21 16:19:59,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4644, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5042, PETRI_PLACES=372, PETRI_TRANSITIONS=370} [2024-06-21 16:19:59,698 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 341 predicate places. [2024-06-21 16:19:59,698 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 370 transitions, 5042 flow [2024-06-21 16:19:59,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:19:59,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:19:59,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:19:59,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-21 16:19:59,699 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:19:59,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:19:59,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1125433285, now seen corresponding path program 13 times [2024-06-21 16:19:59,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:19:59,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198844461] [2024-06-21 16:19:59,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:19:59,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:19:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:20:00,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:20:00,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:20:00,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198844461] [2024-06-21 16:20:00,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198844461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:20:00,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:20:00,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:20:00,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277570625] [2024-06-21 16:20:00,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:20:00,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:20:00,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:20:00,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:20:00,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:20:01,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:20:01,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 370 transitions, 5042 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:20:01,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:20:01,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:20:01,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:20:01,685 INFO L124 PetriNetUnfolderBase]: 759/1395 cut-off events. [2024-06-21 16:20:01,685 INFO L125 PetriNetUnfolderBase]: For 291554/291554 co-relation queries the response was YES. [2024-06-21 16:20:01,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14412 conditions, 1395 events. 759/1395 cut-off events. For 291554/291554 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7906 event pairs, 40 based on Foata normal form. 2/1395 useless extension candidates. Maximal degree in co-relation 14236. Up to 889 conditions per place. [2024-06-21 16:20:01,706 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 266 selfloop transitions, 125 changer transitions 0/394 dead transitions. [2024-06-21 16:20:01,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 394 transitions, 6958 flow [2024-06-21 16:20:01,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:20:01,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:20:01,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 152 transitions. [2024-06-21 16:20:01,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-21 16:20:01,708 INFO L175 Difference]: Start difference. First operand has 372 places, 370 transitions, 5042 flow. Second operand 11 states and 152 transitions. [2024-06-21 16:20:01,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 394 transitions, 6958 flow [2024-06-21 16:20:02,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 394 transitions, 6709 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-21 16:20:02,532 INFO L231 Difference]: Finished difference. Result has 376 places, 375 transitions, 5183 flow [2024-06-21 16:20:02,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4799, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5183, PETRI_PLACES=376, PETRI_TRANSITIONS=375} [2024-06-21 16:20:02,532 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 345 predicate places. [2024-06-21 16:20:02,532 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 375 transitions, 5183 flow [2024-06-21 16:20:02,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:20:02,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:20:02,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:20:02,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-21 16:20:02,533 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:20:02,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:20:02,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1384466627, now seen corresponding path program 14 times [2024-06-21 16:20:02,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:20:02,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423929863] [2024-06-21 16:20:02,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:20:02,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:20:02,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:20:03,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:20:03,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:20:03,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423929863] [2024-06-21 16:20:03,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423929863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:20:03,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:20:03,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:20:03,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977455546] [2024-06-21 16:20:03,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:20:03,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:20:03,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:20:03,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:20:03,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:20:03,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:20:03,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 375 transitions, 5183 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:20:03,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:20:03,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:20:03,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:20:04,382 INFO L124 PetriNetUnfolderBase]: 757/1392 cut-off events. [2024-06-21 16:20:04,382 INFO L125 PetriNetUnfolderBase]: For 284684/284684 co-relation queries the response was YES. [2024-06-21 16:20:04,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14223 conditions, 1392 events. 757/1392 cut-off events. For 284684/284684 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7887 event pairs, 39 based on Foata normal form. 1/1391 useless extension candidates. Maximal degree in co-relation 14046. Up to 1042 conditions per place. [2024-06-21 16:20:04,397 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 295 selfloop transitions, 95 changer transitions 0/393 dead transitions. [2024-06-21 16:20:04,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 393 transitions, 6353 flow [2024-06-21 16:20:04,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:20:04,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:20:04,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-21 16:20:04,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-21 16:20:04,398 INFO L175 Difference]: Start difference. First operand has 376 places, 375 transitions, 5183 flow. Second operand 11 states and 142 transitions. [2024-06-21 16:20:04,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 393 transitions, 6353 flow [2024-06-21 16:20:05,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 393 transitions, 6038 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-21 16:20:05,236 INFO L231 Difference]: Finished difference. Result has 381 places, 380 transitions, 5214 flow [2024-06-21 16:20:05,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4904, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5214, PETRI_PLACES=381, PETRI_TRANSITIONS=380} [2024-06-21 16:20:05,236 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 350 predicate places. [2024-06-21 16:20:05,236 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 380 transitions, 5214 flow [2024-06-21 16:20:05,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:20:05,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:20:05,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:20:05,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-21 16:20:05,237 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:20:05,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:20:05,237 INFO L85 PathProgramCache]: Analyzing trace with hash 897301743, now seen corresponding path program 1 times [2024-06-21 16:20:05,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:20:05,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364534630] [2024-06-21 16:20:05,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:20:05,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:20:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:20:06,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:20:06,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:20:06,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364534630] [2024-06-21 16:20:06,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364534630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:20:06,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:20:06,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:20:06,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343827572] [2024-06-21 16:20:06,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:20:06,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:20:06,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:20:06,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:20:06,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:20:06,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:20:06,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 380 transitions, 5214 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-21 16:20:06,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:20:06,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:20:06,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:20:06,591 INFO L124 PetriNetUnfolderBase]: 753/1386 cut-off events. [2024-06-21 16:20:06,591 INFO L125 PetriNetUnfolderBase]: For 282527/282527 co-relation queries the response was YES. [2024-06-21 16:20:06,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13877 conditions, 1386 events. 753/1386 cut-off events. For 282527/282527 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7857 event pairs, 39 based on Foata normal form. 2/1386 useless extension candidates. Maximal degree in co-relation 13698. Up to 1186 conditions per place. [2024-06-21 16:20:06,607 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 345 selfloop transitions, 43 changer transitions 0/391 dead transitions. [2024-06-21 16:20:06,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 391 transitions, 6016 flow [2024-06-21 16:20:06,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:20:06,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:20:06,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-21 16:20:06,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-21 16:20:06,608 INFO L175 Difference]: Start difference. First operand has 381 places, 380 transitions, 5214 flow. Second operand 10 states and 127 transitions. [2024-06-21 16:20:06,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 391 transitions, 6016 flow [2024-06-21 16:20:07,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 391 transitions, 5740 flow, removed 66 selfloop flow, removed 8 redundant places. [2024-06-21 16:20:07,360 INFO L231 Difference]: Finished difference. Result has 383 places, 380 transitions, 5032 flow [2024-06-21 16:20:07,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4938, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5032, PETRI_PLACES=383, PETRI_TRANSITIONS=380} [2024-06-21 16:20:07,360 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 352 predicate places. [2024-06-21 16:20:07,360 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 380 transitions, 5032 flow [2024-06-21 16:20:07,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-21 16:20:07,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:20:07,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:20:07,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-21 16:20:07,361 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:20:07,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:20:07,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1133485783, now seen corresponding path program 5 times [2024-06-21 16:20:07,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:20:07,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874034165] [2024-06-21 16:20:07,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:20:07,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:20:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:20:08,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:20:08,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:20:08,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874034165] [2024-06-21 16:20:08,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874034165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:20:08,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:20:08,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:20:08,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968477857] [2024-06-21 16:20:08,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:20:08,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:20:08,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:20:08,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:20:08,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:20:08,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:20:08,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 380 transitions, 5032 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:20:08,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:20:08,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:20:08,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:20:08,964 INFO L124 PetriNetUnfolderBase]: 757/1393 cut-off events. [2024-06-21 16:20:08,964 INFO L125 PetriNetUnfolderBase]: For 286144/286144 co-relation queries the response was YES. [2024-06-21 16:20:08,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13740 conditions, 1393 events. 757/1393 cut-off events. For 286144/286144 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7939 event pairs, 34 based on Foata normal form. 2/1393 useless extension candidates. Maximal degree in co-relation 13562. Up to 1204 conditions per place. [2024-06-21 16:20:08,983 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 347 selfloop transitions, 44 changer transitions 0/394 dead transitions. [2024-06-21 16:20:08,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 394 transitions, 5883 flow [2024-06-21 16:20:08,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:20:08,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:20:08,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-21 16:20:08,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-21 16:20:08,984 INFO L175 Difference]: Start difference. First operand has 383 places, 380 transitions, 5032 flow. Second operand 10 states and 124 transitions. [2024-06-21 16:20:08,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 394 transitions, 5883 flow [2024-06-21 16:20:09,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 394 transitions, 5773 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-21 16:20:09,753 INFO L231 Difference]: Finished difference. Result has 383 places, 381 transitions, 5048 flow [2024-06-21 16:20:09,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4922, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5048, PETRI_PLACES=383, PETRI_TRANSITIONS=381} [2024-06-21 16:20:09,753 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 352 predicate places. [2024-06-21 16:20:09,753 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 381 transitions, 5048 flow [2024-06-21 16:20:09,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:20:09,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:20:09,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:20:09,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-21 16:20:09,754 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:20:09,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:20:09,754 INFO L85 PathProgramCache]: Analyzing trace with hash 903557605, now seen corresponding path program 15 times [2024-06-21 16:20:09,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:20:09,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329700410] [2024-06-21 16:20:09,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:20:09,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:20:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:20:10,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:20:10,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:20:10,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329700410] [2024-06-21 16:20:10,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329700410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:20:10,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:20:10,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:20:10,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359675469] [2024-06-21 16:20:10,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:20:10,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:20:10,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:20:10,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:20:10,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:20:10,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:20:10,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 381 transitions, 5048 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:20:10,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:20:10,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:20:10,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:20:11,479 INFO L124 PetriNetUnfolderBase]: 830/1529 cut-off events. [2024-06-21 16:20:11,479 INFO L125 PetriNetUnfolderBase]: For 298488/298488 co-relation queries the response was YES. [2024-06-21 16:20:11,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15048 conditions, 1529 events. 830/1529 cut-off events. For 298488/298488 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 8946 event pairs, 41 based on Foata normal form. 1/1525 useless extension candidates. Maximal degree in co-relation 14869. Up to 1281 conditions per place. [2024-06-21 16:20:11,500 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 377 selfloop transitions, 59 changer transitions 0/439 dead transitions. [2024-06-21 16:20:11,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 439 transitions, 7106 flow [2024-06-21 16:20:11,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:20:11,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:20:11,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-21 16:20:11,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114583333333333 [2024-06-21 16:20:11,501 INFO L175 Difference]: Start difference. First operand has 383 places, 381 transitions, 5048 flow. Second operand 12 states and 158 transitions. [2024-06-21 16:20:11,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 439 transitions, 7106 flow [2024-06-21 16:20:12,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 439 transitions, 6972 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-21 16:20:12,360 INFO L231 Difference]: Finished difference. Result has 392 places, 414 transitions, 5704 flow [2024-06-21 16:20:12,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4936, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5704, PETRI_PLACES=392, PETRI_TRANSITIONS=414} [2024-06-21 16:20:12,360 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 361 predicate places. [2024-06-21 16:20:12,360 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 414 transitions, 5704 flow [2024-06-21 16:20:12,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:20:12,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:20:12,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:20:12,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-21 16:20:12,362 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:20:12,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:20:12,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1125442213, now seen corresponding path program 6 times [2024-06-21 16:20:12,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:20:12,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862788638] [2024-06-21 16:20:12,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:20:12,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:20:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:20:13,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:20:13,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:20:13,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862788638] [2024-06-21 16:20:13,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862788638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:20:13,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:20:13,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:20:13,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917789525] [2024-06-21 16:20:13,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:20:13,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:20:13,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:20:13,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:20:13,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:20:13,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:20:13,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 414 transitions, 5704 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:20:13,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:20:13,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:20:13,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:20:14,014 INFO L124 PetriNetUnfolderBase]: 827/1523 cut-off events. [2024-06-21 16:20:14,014 INFO L125 PetriNetUnfolderBase]: For 291861/291861 co-relation queries the response was YES. [2024-06-21 16:20:14,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14891 conditions, 1523 events. 827/1523 cut-off events. For 291861/291861 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 8895 event pairs, 33 based on Foata normal form. 2/1523 useless extension candidates. Maximal degree in co-relation 14706. Up to 1309 conditions per place. [2024-06-21 16:20:14,034 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 378 selfloop transitions, 46 changer transitions 0/427 dead transitions. [2024-06-21 16:20:14,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 427 transitions, 6593 flow [2024-06-21 16:20:14,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:20:14,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:20:14,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 16:20:14,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-21 16:20:14,035 INFO L175 Difference]: Start difference. First operand has 392 places, 414 transitions, 5704 flow. Second operand 10 states and 126 transitions. [2024-06-21 16:20:14,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 427 transitions, 6593 flow [2024-06-21 16:20:14,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 427 transitions, 6496 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-21 16:20:14,968 INFO L231 Difference]: Finished difference. Result has 398 places, 414 transitions, 5705 flow [2024-06-21 16:20:14,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5609, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5705, PETRI_PLACES=398, PETRI_TRANSITIONS=414} [2024-06-21 16:20:14,968 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 367 predicate places. [2024-06-21 16:20:14,968 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 414 transitions, 5705 flow [2024-06-21 16:20:14,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:20:14,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:20:14,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:20:14,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-21 16:20:14,969 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:20:14,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:20:14,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1163052227, now seen corresponding path program 16 times [2024-06-21 16:20:14,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:20:14,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085043821] [2024-06-21 16:20:14,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:20:14,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:20:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:20:15,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:20:15,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:20:15,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085043821] [2024-06-21 16:20:15,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085043821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:20:15,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:20:15,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:20:15,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214791060] [2024-06-21 16:20:15,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:20:15,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:20:15,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:20:15,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:20:15,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:20:16,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:20:16,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 414 transitions, 5705 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:20:16,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:20:16,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:20:16,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:20:16,672 INFO L124 PetriNetUnfolderBase]: 836/1543 cut-off events. [2024-06-21 16:20:16,672 INFO L125 PetriNetUnfolderBase]: For 304371/304371 co-relation queries the response was YES. [2024-06-21 16:20:16,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15137 conditions, 1543 events. 836/1543 cut-off events. For 304371/304371 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9040 event pairs, 38 based on Foata normal form. 3/1544 useless extension candidates. Maximal degree in co-relation 14950. Up to 1159 conditions per place. [2024-06-21 16:20:16,692 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 337 selfloop transitions, 95 changer transitions 0/435 dead transitions. [2024-06-21 16:20:16,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 435 transitions, 7270 flow [2024-06-21 16:20:16,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:20:16,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:20:16,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-21 16:20:16,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-21 16:20:16,693 INFO L175 Difference]: Start difference. First operand has 398 places, 414 transitions, 5705 flow. Second operand 11 states and 145 transitions. [2024-06-21 16:20:16,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 435 transitions, 7270 flow [2024-06-21 16:20:17,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 435 transitions, 7116 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-21 16:20:17,555 INFO L231 Difference]: Finished difference. Result has 400 places, 420 transitions, 5940 flow [2024-06-21 16:20:17,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5551, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5940, PETRI_PLACES=400, PETRI_TRANSITIONS=420} [2024-06-21 16:20:17,556 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 369 predicate places. [2024-06-21 16:20:17,556 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 420 transitions, 5940 flow [2024-06-21 16:20:17,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:20:17,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:20:17,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:20:17,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-21 16:20:17,556 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:20:17,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:20:17,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1156565477, now seen corresponding path program 17 times [2024-06-21 16:20:17,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:20:17,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716168358] [2024-06-21 16:20:17,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:20:17,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:20:17,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:20:18,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:20:18,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:20:18,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716168358] [2024-06-21 16:20:18,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716168358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:20:18,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:20:18,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:20:18,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494634801] [2024-06-21 16:20:18,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:20:18,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:20:18,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:20:18,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:20:18,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:20:18,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:20:18,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 420 transitions, 5940 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:20:18,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:20:18,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:20:18,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:20:19,291 INFO L124 PetriNetUnfolderBase]: 848/1565 cut-off events. [2024-06-21 16:20:19,291 INFO L125 PetriNetUnfolderBase]: For 303704/303704 co-relation queries the response was YES. [2024-06-21 16:20:19,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15445 conditions, 1565 events. 848/1565 cut-off events. For 303704/303704 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 9217 event pairs, 38 based on Foata normal form. 2/1562 useless extension candidates. Maximal degree in co-relation 15257. Up to 1345 conditions per place. [2024-06-21 16:20:19,312 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 396 selfloop transitions, 49 changer transitions 0/448 dead transitions. [2024-06-21 16:20:19,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 448 transitions, 7358 flow [2024-06-21 16:20:19,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:20:19,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:20:19,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-21 16:20:19,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-21 16:20:19,313 INFO L175 Difference]: Start difference. First operand has 400 places, 420 transitions, 5940 flow. Second operand 12 states and 151 transitions. [2024-06-21 16:20:19,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 448 transitions, 7358 flow [2024-06-21 16:20:20,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 448 transitions, 6910 flow, removed 75 selfloop flow, removed 9 redundant places. [2024-06-21 16:20:20,218 INFO L231 Difference]: Finished difference. Result has 406 places, 431 transitions, 5852 flow [2024-06-21 16:20:20,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5506, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5852, PETRI_PLACES=406, PETRI_TRANSITIONS=431} [2024-06-21 16:20:20,218 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 375 predicate places. [2024-06-21 16:20:20,218 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 431 transitions, 5852 flow [2024-06-21 16:20:20,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:20:20,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:20:20,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:20:20,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-21 16:20:20,219 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:20:20,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:20:20,219 INFO L85 PathProgramCache]: Analyzing trace with hash -741360955, now seen corresponding path program 7 times [2024-06-21 16:20:20,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:20:20,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950492688] [2024-06-21 16:20:20,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:20:20,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:20:20,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:20:21,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:20:21,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:20:21,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950492688] [2024-06-21 16:20:21,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950492688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:20:21,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:20:21,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:20:21,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919172879] [2024-06-21 16:20:21,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:20:21,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:20:21,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:20:21,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:20:21,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:20:21,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:20:21,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 431 transitions, 5852 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:20:21,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:20:21,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:20:21,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:20:22,031 INFO L124 PetriNetUnfolderBase]: 859/1586 cut-off events. [2024-06-21 16:20:22,031 INFO L125 PetriNetUnfolderBase]: For 322529/322529 co-relation queries the response was YES. [2024-06-21 16:20:22,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15590 conditions, 1586 events. 859/1586 cut-off events. For 322529/322529 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 9387 event pairs, 72 based on Foata normal form. 2/1586 useless extension candidates. Maximal degree in co-relation 15399. Up to 1419 conditions per place. [2024-06-21 16:20:22,057 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 417 selfloop transitions, 27 changer transitions 0/447 dead transitions. [2024-06-21 16:20:22,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 447 transitions, 7074 flow [2024-06-21 16:20:22,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:20:22,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:20:22,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-21 16:20:22,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-21 16:20:22,059 INFO L175 Difference]: Start difference. First operand has 406 places, 431 transitions, 5852 flow. Second operand 12 states and 141 transitions. [2024-06-21 16:20:22,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 447 transitions, 7074 flow [2024-06-21 16:20:23,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 447 transitions, 6954 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-21 16:20:23,047 INFO L231 Difference]: Finished difference. Result has 411 places, 433 transitions, 5856 flow [2024-06-21 16:20:23,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5732, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5856, PETRI_PLACES=411, PETRI_TRANSITIONS=433} [2024-06-21 16:20:23,047 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 380 predicate places. [2024-06-21 16:20:23,048 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 433 transitions, 5856 flow [2024-06-21 16:20:23,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:20:23,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:20:23,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:20:23,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-21 16:20:23,048 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:20:23,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:20:23,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1894655931, now seen corresponding path program 8 times [2024-06-21 16:20:23,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:20:23,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123914792] [2024-06-21 16:20:23,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:20:23,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:20:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:20:24,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:20:24,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:20:24,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123914792] [2024-06-21 16:20:24,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123914792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:20:24,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:20:24,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:20:24,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273912744] [2024-06-21 16:20:24,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:20:24,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:20:24,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:20:24,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:20:24,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:20:24,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:20:24,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 433 transitions, 5856 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:20:24,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:20:24,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:20:24,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:20:24,986 INFO L124 PetriNetUnfolderBase]: 860/1589 cut-off events. [2024-06-21 16:20:24,986 INFO L125 PetriNetUnfolderBase]: For 328826/328826 co-relation queries the response was YES. [2024-06-21 16:20:25,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15367 conditions, 1589 events. 860/1589 cut-off events. For 328826/328826 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9400 event pairs, 70 based on Foata normal form. 4/1591 useless extension candidates. Maximal degree in co-relation 15175. Up to 1431 conditions per place. [2024-06-21 16:20:25,009 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 415 selfloop transitions, 26 changer transitions 0/444 dead transitions. [2024-06-21 16:20:25,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 444 transitions, 6794 flow [2024-06-21 16:20:25,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:20:25,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:20:25,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-21 16:20:25,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-21 16:20:25,010 INFO L175 Difference]: Start difference. First operand has 411 places, 433 transitions, 5856 flow. Second operand 10 states and 118 transitions. [2024-06-21 16:20:25,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 444 transitions, 6794 flow [2024-06-21 16:20:26,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 444 transitions, 6685 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-21 16:20:26,059 INFO L231 Difference]: Finished difference. Result has 412 places, 434 transitions, 5842 flow [2024-06-21 16:20:26,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5747, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5842, PETRI_PLACES=412, PETRI_TRANSITIONS=434} [2024-06-21 16:20:26,059 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 381 predicate places. [2024-06-21 16:20:26,060 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 434 transitions, 5842 flow [2024-06-21 16:20:26,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:20:26,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:20:26,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:20:26,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-21 16:20:26,060 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:20:26,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:20:26,061 INFO L85 PathProgramCache]: Analyzing trace with hash 2067984545, now seen corresponding path program 18 times [2024-06-21 16:20:26,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:20:26,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506345984] [2024-06-21 16:20:26,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:20:26,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:20:26,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:20:27,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:20:27,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:20:27,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506345984] [2024-06-21 16:20:27,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506345984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:20:27,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:20:27,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:20:27,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093094013] [2024-06-21 16:20:27,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:20:27,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:20:27,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:20:27,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:20:27,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:20:27,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:20:27,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 434 transitions, 5842 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:20:27,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:20:27,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:20:27,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:20:27,708 INFO L124 PetriNetUnfolderBase]: 873/1614 cut-off events. [2024-06-21 16:20:27,708 INFO L125 PetriNetUnfolderBase]: For 327769/327769 co-relation queries the response was YES. [2024-06-21 16:20:27,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15898 conditions, 1614 events. 873/1614 cut-off events. For 327769/327769 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 9633 event pairs, 46 based on Foata normal form. 1/1610 useless extension candidates. Maximal degree in co-relation 15706. Up to 977 conditions per place. [2024-06-21 16:20:27,732 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 294 selfloop transitions, 164 changer transitions 0/461 dead transitions. [2024-06-21 16:20:27,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 461 transitions, 7891 flow [2024-06-21 16:20:27,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:20:27,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:20:27,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-21 16:20:27,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-21 16:20:27,733 INFO L175 Difference]: Start difference. First operand has 412 places, 434 transitions, 5842 flow. Second operand 11 states and 146 transitions. [2024-06-21 16:20:27,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 461 transitions, 7891 flow [2024-06-21 16:20:28,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 461 transitions, 7814 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-21 16:20:28,949 INFO L231 Difference]: Finished difference. Result has 416 places, 445 transitions, 6460 flow [2024-06-21 16:20:28,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5765, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6460, PETRI_PLACES=416, PETRI_TRANSITIONS=445} [2024-06-21 16:20:28,950 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 385 predicate places. [2024-06-21 16:20:28,950 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 445 transitions, 6460 flow [2024-06-21 16:20:28,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:20:28,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:20:28,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:20:28,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-21 16:20:28,952 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:20:28,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:20:28,952 INFO L85 PathProgramCache]: Analyzing trace with hash 2067978035, now seen corresponding path program 19 times [2024-06-21 16:20:28,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:20:28,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169163916] [2024-06-21 16:20:28,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:20:28,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:20:28,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:20:29,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:20:29,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:20:29,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169163916] [2024-06-21 16:20:29,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169163916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:20:29,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:20:29,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:20:29,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768399812] [2024-06-21 16:20:29,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:20:29,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:20:29,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:20:29,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:20:29,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:20:30,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:20:30,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 445 transitions, 6460 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:20:30,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:20:30,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:20:30,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:20:30,589 INFO L124 PetriNetUnfolderBase]: 881/1631 cut-off events. [2024-06-21 16:20:30,589 INFO L125 PetriNetUnfolderBase]: For 339649/339649 co-relation queries the response was YES. [2024-06-21 16:20:30,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16550 conditions, 1631 events. 881/1631 cut-off events. For 339649/339649 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 9744 event pairs, 57 based on Foata normal form. 1/1626 useless extension candidates. Maximal degree in co-relation 16356. Up to 707 conditions per place. [2024-06-21 16:20:30,612 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 242 selfloop transitions, 220 changer transitions 0/465 dead transitions. [2024-06-21 16:20:30,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 465 transitions, 8373 flow [2024-06-21 16:20:30,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:20:30,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:20:30,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-06-21 16:20:30,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-06-21 16:20:30,616 INFO L175 Difference]: Start difference. First operand has 416 places, 445 transitions, 6460 flow. Second operand 11 states and 150 transitions. [2024-06-21 16:20:30,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 465 transitions, 8373 flow [2024-06-21 16:20:31,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 465 transitions, 8120 flow, removed 92 selfloop flow, removed 4 redundant places. [2024-06-21 16:20:31,740 INFO L231 Difference]: Finished difference. Result has 423 places, 451 transitions, 6860 flow [2024-06-21 16:20:31,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6207, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6860, PETRI_PLACES=423, PETRI_TRANSITIONS=451} [2024-06-21 16:20:31,742 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 392 predicate places. [2024-06-21 16:20:31,742 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 451 transitions, 6860 flow [2024-06-21 16:20:31,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:20:31,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:20:31,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:20:31,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-21 16:20:31,744 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:20:31,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:20:31,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1689029937, now seen corresponding path program 6 times [2024-06-21 16:20:31,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:20:31,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245559746] [2024-06-21 16:20:31,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:20:31,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:20:31,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:20:32,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:20:32,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:20:32,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245559746] [2024-06-21 16:20:32,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245559746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:20:32,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:20:32,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:20:32,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070453027] [2024-06-21 16:20:32,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:20:32,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:20:32,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:20:32,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:20:32,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:20:32,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:20:32,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 451 transitions, 6860 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:20:32,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:20:32,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:20:32,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:20:33,136 INFO L124 PetriNetUnfolderBase]: 885/1638 cut-off events. [2024-06-21 16:20:33,136 INFO L125 PetriNetUnfolderBase]: For 354686/354686 co-relation queries the response was YES. [2024-06-21 16:20:33,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16966 conditions, 1638 events. 885/1638 cut-off events. For 354686/354686 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 9759 event pairs, 49 based on Foata normal form. 2/1634 useless extension candidates. Maximal degree in co-relation 16770. Up to 1391 conditions per place. [2024-06-21 16:20:33,156 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 409 selfloop transitions, 51 changer transitions 0/463 dead transitions. [2024-06-21 16:20:33,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 463 transitions, 7850 flow [2024-06-21 16:20:33,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:20:33,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:20:33,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-21 16:20:33,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-21 16:20:33,158 INFO L175 Difference]: Start difference. First operand has 423 places, 451 transitions, 6860 flow. Second operand 10 states and 122 transitions. [2024-06-21 16:20:33,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 463 transitions, 7850 flow [2024-06-21 16:20:34,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 463 transitions, 7702 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-21 16:20:34,410 INFO L231 Difference]: Finished difference. Result has 428 places, 453 transitions, 6868 flow [2024-06-21 16:20:34,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6713, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6868, PETRI_PLACES=428, PETRI_TRANSITIONS=453} [2024-06-21 16:20:34,410 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 397 predicate places. [2024-06-21 16:20:34,411 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 453 transitions, 6868 flow [2024-06-21 16:20:34,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:20:34,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:20:34,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:20:34,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-21 16:20:34,411 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:20:34,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:20:34,412 INFO L85 PathProgramCache]: Analyzing trace with hash 327034307, now seen corresponding path program 20 times [2024-06-21 16:20:34,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:20:34,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832189968] [2024-06-21 16:20:34,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:20:34,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:20:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:20:35,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:20:35,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:20:35,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832189968] [2024-06-21 16:20:35,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832189968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:20:35,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:20:35,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:20:35,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520442989] [2024-06-21 16:20:35,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:20:35,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:20:35,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:20:35,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:20:35,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:20:35,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:20:35,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 453 transitions, 6868 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:20:35,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:20:35,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:20:35,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:20:35,963 INFO L124 PetriNetUnfolderBase]: 901/1668 cut-off events. [2024-06-21 16:20:35,964 INFO L125 PetriNetUnfolderBase]: For 376510/376510 co-relation queries the response was YES. [2024-06-21 16:20:35,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17676 conditions, 1668 events. 901/1668 cut-off events. For 376510/376510 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 10012 event pairs, 49 based on Foata normal form. 2/1664 useless extension candidates. Maximal degree in co-relation 17478. Up to 1385 conditions per place. [2024-06-21 16:20:35,996 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 405 selfloop transitions, 65 changer transitions 0/473 dead transitions. [2024-06-21 16:20:35,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 473 transitions, 8417 flow [2024-06-21 16:20:35,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:20:35,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:20:35,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-21 16:20:35,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-21 16:20:35,998 INFO L175 Difference]: Start difference. First operand has 428 places, 453 transitions, 6868 flow. Second operand 11 states and 138 transitions. [2024-06-21 16:20:35,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 473 transitions, 8417 flow [2024-06-21 16:20:37,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 473 transitions, 8201 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-21 16:20:37,249 INFO L231 Difference]: Finished difference. Result has 429 places, 460 transitions, 7082 flow [2024-06-21 16:20:37,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6652, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7082, PETRI_PLACES=429, PETRI_TRANSITIONS=460} [2024-06-21 16:20:37,249 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 398 predicate places. [2024-06-21 16:20:37,249 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 460 transitions, 7082 flow [2024-06-21 16:20:37,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:20:37,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:20:37,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:20:37,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-21 16:20:37,250 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:20:37,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:20:37,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1557958537, now seen corresponding path program 21 times [2024-06-21 16:20:37,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:20:37,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949721498] [2024-06-21 16:20:37,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:20:37,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:20:37,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:20:38,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:20:38,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:20:38,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949721498] [2024-06-21 16:20:38,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949721498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:20:38,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:20:38,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:20:38,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340977031] [2024-06-21 16:20:38,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:20:38,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:20:38,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:20:38,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:20:38,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:20:38,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:20:38,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 460 transitions, 7082 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:20:38,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:20:38,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:20:38,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:20:39,129 INFO L124 PetriNetUnfolderBase]: 899/1665 cut-off events. [2024-06-21 16:20:39,129 INFO L125 PetriNetUnfolderBase]: For 365986/365986 co-relation queries the response was YES. [2024-06-21 16:20:39,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17433 conditions, 1665 events. 899/1665 cut-off events. For 365986/365986 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 9981 event pairs, 54 based on Foata normal form. 1/1660 useless extension candidates. Maximal degree in co-relation 17236. Up to 1361 conditions per place. [2024-06-21 16:20:39,153 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 399 selfloop transitions, 71 changer transitions 0/473 dead transitions. [2024-06-21 16:20:39,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 473 transitions, 8351 flow [2024-06-21 16:20:39,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:20:39,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:20:39,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-21 16:20:39,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-21 16:20:39,155 INFO L175 Difference]: Start difference. First operand has 429 places, 460 transitions, 7082 flow. Second operand 11 states and 140 transitions. [2024-06-21 16:20:39,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 473 transitions, 8351 flow [2024-06-21 16:20:40,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 473 transitions, 8121 flow, removed 81 selfloop flow, removed 7 redundant places. [2024-06-21 16:20:40,397 INFO L231 Difference]: Finished difference. Result has 433 places, 461 transitions, 7035 flow [2024-06-21 16:20:40,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6852, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7035, PETRI_PLACES=433, PETRI_TRANSITIONS=461} [2024-06-21 16:20:40,398 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 402 predicate places. [2024-06-21 16:20:40,398 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 461 transitions, 7035 flow [2024-06-21 16:20:40,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:20:40,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:20:40,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:20:40,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-21 16:20:40,399 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:20:40,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:20:40,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1551695917, now seen corresponding path program 22 times [2024-06-21 16:20:40,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:20:40,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069633359] [2024-06-21 16:20:40,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:20:40,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:20:40,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:20:41,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:20:41,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:20:41,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069633359] [2024-06-21 16:20:41,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069633359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:20:41,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:20:41,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:20:41,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132341617] [2024-06-21 16:20:41,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:20:41,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:20:41,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:20:41,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:20:41,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:20:41,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:20:41,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 461 transitions, 7035 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:20:41,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:20:41,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:20:41,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:20:42,138 INFO L124 PetriNetUnfolderBase]: 925/1715 cut-off events. [2024-06-21 16:20:42,138 INFO L125 PetriNetUnfolderBase]: For 414529/414529 co-relation queries the response was YES. [2024-06-21 16:20:42,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18676 conditions, 1715 events. 925/1715 cut-off events. For 414529/414529 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 10375 event pairs, 52 based on Foata normal form. 2/1711 useless extension candidates. Maximal degree in co-relation 18477. Up to 1346 conditions per place. [2024-06-21 16:20:42,165 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 402 selfloop transitions, 84 changer transitions 0/489 dead transitions. [2024-06-21 16:20:42,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 489 transitions, 9358 flow [2024-06-21 16:20:42,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:20:42,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:20:42,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-21 16:20:42,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-21 16:20:42,167 INFO L175 Difference]: Start difference. First operand has 433 places, 461 transitions, 7035 flow. Second operand 11 states and 148 transitions. [2024-06-21 16:20:42,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 489 transitions, 9358 flow [2024-06-21 16:20:43,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 489 transitions, 9160 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-21 16:20:43,567 INFO L231 Difference]: Finished difference. Result has 436 places, 471 transitions, 7453 flow [2024-06-21 16:20:43,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6837, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7453, PETRI_PLACES=436, PETRI_TRANSITIONS=471} [2024-06-21 16:20:43,567 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 405 predicate places. [2024-06-21 16:20:43,567 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 471 transitions, 7453 flow [2024-06-21 16:20:43,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:20:43,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:20:43,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:20:43,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-21 16:20:43,568 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:20:43,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:20:43,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1551702427, now seen corresponding path program 23 times [2024-06-21 16:20:43,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:20:43,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080403129] [2024-06-21 16:20:43,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:20:43,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:20:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:20:44,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:20:44,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:20:44,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080403129] [2024-06-21 16:20:44,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080403129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:20:44,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:20:44,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:20:44,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050319976] [2024-06-21 16:20:44,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:20:44,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:20:44,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:20:44,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:20:44,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:20:44,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:20:44,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 471 transitions, 7453 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:20:44,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:20:44,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:20:44,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:20:45,289 INFO L124 PetriNetUnfolderBase]: 928/1720 cut-off events. [2024-06-21 16:20:45,290 INFO L125 PetriNetUnfolderBase]: For 412267/412267 co-relation queries the response was YES. [2024-06-21 16:20:45,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18798 conditions, 1720 events. 928/1720 cut-off events. For 412267/412267 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 10397 event pairs, 49 based on Foata normal form. 1/1715 useless extension candidates. Maximal degree in co-relation 18598. Up to 1374 conditions per place. [2024-06-21 16:20:45,315 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 402 selfloop transitions, 85 changer transitions 0/490 dead transitions. [2024-06-21 16:20:45,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 490 transitions, 9417 flow [2024-06-21 16:20:45,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:20:45,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:20:45,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-21 16:20:45,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-21 16:20:45,316 INFO L175 Difference]: Start difference. First operand has 436 places, 471 transitions, 7453 flow. Second operand 11 states and 146 transitions. [2024-06-21 16:20:45,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 490 transitions, 9417 flow [2024-06-21 16:20:46,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 490 transitions, 9068 flow, removed 110 selfloop flow, removed 7 redundant places. [2024-06-21 16:20:46,614 INFO L231 Difference]: Finished difference. Result has 440 places, 475 transitions, 7437 flow [2024-06-21 16:20:46,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7118, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7437, PETRI_PLACES=440, PETRI_TRANSITIONS=475} [2024-06-21 16:20:46,615 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 409 predicate places. [2024-06-21 16:20:46,615 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 475 transitions, 7437 flow [2024-06-21 16:20:46,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:20:46,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:20:46,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:20:46,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-21 16:20:46,616 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:20:46,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:20:46,616 INFO L85 PathProgramCache]: Analyzing trace with hash -9313407, now seen corresponding path program 9 times [2024-06-21 16:20:46,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:20:46,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054915806] [2024-06-21 16:20:46,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:20:46,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:20:46,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:20:47,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:20:47,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:20:47,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054915806] [2024-06-21 16:20:47,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054915806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:20:47,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:20:47,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:20:47,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86375668] [2024-06-21 16:20:47,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:20:47,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:20:47,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:20:47,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:20:47,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:20:47,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:20:47,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 475 transitions, 7437 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:20:47,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:20:47,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:20:47,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:20:48,449 INFO L124 PetriNetUnfolderBase]: 939/1740 cut-off events. [2024-06-21 16:20:48,449 INFO L125 PetriNetUnfolderBase]: For 442189/442189 co-relation queries the response was YES. [2024-06-21 16:20:48,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19128 conditions, 1740 events. 939/1740 cut-off events. For 442189/442189 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 10564 event pairs, 78 based on Foata normal form. 2/1740 useless extension candidates. Maximal degree in co-relation 18927. Up to 1511 conditions per place. [2024-06-21 16:20:48,476 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 459 selfloop transitions, 30 changer transitions 0/492 dead transitions. [2024-06-21 16:20:48,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 492 transitions, 8777 flow [2024-06-21 16:20:48,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:20:48,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:20:48,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-21 16:20:48,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-21 16:20:48,477 INFO L175 Difference]: Start difference. First operand has 440 places, 475 transitions, 7437 flow. Second operand 12 states and 140 transitions. [2024-06-21 16:20:48,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 492 transitions, 8777 flow [2024-06-21 16:20:49,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 492 transitions, 8588 flow, removed 56 selfloop flow, removed 6 redundant places. [2024-06-21 16:20:49,801 INFO L231 Difference]: Finished difference. Result has 446 places, 477 transitions, 7386 flow [2024-06-21 16:20:49,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7248, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7386, PETRI_PLACES=446, PETRI_TRANSITIONS=477} [2024-06-21 16:20:49,801 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 415 predicate places. [2024-06-21 16:20:49,801 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 477 transitions, 7386 flow [2024-06-21 16:20:49,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:20:49,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:20:49,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:20:49,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-21 16:20:49,802 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:20:49,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:20:49,802 INFO L85 PathProgramCache]: Analyzing trace with hash -741371495, now seen corresponding path program 2 times [2024-06-21 16:20:49,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:20:49,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375813379] [2024-06-21 16:20:49,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:20:49,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:20:49,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:20:51,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:20:51,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:20:51,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375813379] [2024-06-21 16:20:51,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375813379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:20:51,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:20:51,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:20:51,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191149040] [2024-06-21 16:20:51,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:20:51,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:20:51,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:20:51,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:20:51,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:20:51,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:20:51,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 477 transitions, 7386 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:20:51,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:20:51,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:20:51,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:20:51,855 INFO L124 PetriNetUnfolderBase]: 942/1745 cut-off events. [2024-06-21 16:20:51,855 INFO L125 PetriNetUnfolderBase]: For 440441/440441 co-relation queries the response was YES. [2024-06-21 16:20:51,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19142 conditions, 1745 events. 942/1745 cut-off events. For 440441/440441 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 10601 event pairs, 80 based on Foata normal form. 1/1744 useless extension candidates. Maximal degree in co-relation 18939. Up to 1569 conditions per place. [2024-06-21 16:20:51,882 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 460 selfloop transitions, 28 changer transitions 0/491 dead transitions. [2024-06-21 16:20:51,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 491 transitions, 8684 flow [2024-06-21 16:20:51,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:20:51,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:20:51,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-21 16:20:51,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-21 16:20:51,883 INFO L175 Difference]: Start difference. First operand has 446 places, 477 transitions, 7386 flow. Second operand 12 states and 141 transitions. [2024-06-21 16:20:51,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 491 transitions, 8684 flow [2024-06-21 16:20:53,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 491 transitions, 8609 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-21 16:20:53,331 INFO L231 Difference]: Finished difference. Result has 450 places, 479 transitions, 7408 flow [2024-06-21 16:20:53,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7311, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7408, PETRI_PLACES=450, PETRI_TRANSITIONS=479} [2024-06-21 16:20:53,331 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 419 predicate places. [2024-06-21 16:20:53,331 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 479 transitions, 7408 flow [2024-06-21 16:20:53,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:20:53,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:20:53,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:20:53,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-21 16:20:53,332 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:20:53,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:20:53,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1321767739, now seen corresponding path program 10 times [2024-06-21 16:20:53,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:20:53,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466353678] [2024-06-21 16:20:53,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:20:53,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:20:53,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:20:54,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:20:54,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:20:54,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466353678] [2024-06-21 16:20:54,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466353678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:20:54,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:20:54,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:20:54,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245578743] [2024-06-21 16:20:54,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:20:54,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:20:54,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:20:54,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:20:54,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:20:54,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:20:54,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 479 transitions, 7408 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:20:54,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:20:54,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:20:54,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:20:55,492 INFO L124 PetriNetUnfolderBase]: 949/1757 cut-off events. [2024-06-21 16:20:55,492 INFO L125 PetriNetUnfolderBase]: For 455244/455244 co-relation queries the response was YES. [2024-06-21 16:20:55,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19253 conditions, 1757 events. 949/1757 cut-off events. For 455244/455244 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 10685 event pairs, 39 based on Foata normal form. 2/1755 useless extension candidates. Maximal degree in co-relation 19048. Up to 1543 conditions per place. [2024-06-21 16:20:55,519 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 456 selfloop transitions, 40 changer transitions 0/499 dead transitions. [2024-06-21 16:20:55,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 499 transitions, 8556 flow [2024-06-21 16:20:55,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:20:55,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:20:55,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-21 16:20:55,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 16:20:55,520 INFO L175 Difference]: Start difference. First operand has 450 places, 479 transitions, 7408 flow. Second operand 11 states and 132 transitions. [2024-06-21 16:20:55,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 499 transitions, 8556 flow [2024-06-21 16:20:56,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 499 transitions, 8479 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-21 16:20:56,932 INFO L231 Difference]: Finished difference. Result has 453 places, 487 transitions, 7559 flow [2024-06-21 16:20:56,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7331, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7559, PETRI_PLACES=453, PETRI_TRANSITIONS=487} [2024-06-21 16:20:56,932 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 422 predicate places. [2024-06-21 16:20:56,932 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 487 transitions, 7559 flow [2024-06-21 16:20:56,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:20:56,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:20:56,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:20:56,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-21 16:20:56,933 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:20:56,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:20:56,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1321776667, now seen corresponding path program 24 times [2024-06-21 16:20:56,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:20:56,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926898822] [2024-06-21 16:20:56,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:20:56,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:20:56,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:20:57,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:20:57,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:20:57,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926898822] [2024-06-21 16:20:57,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926898822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:20:57,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:20:57,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:20:57,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477970916] [2024-06-21 16:20:57,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:20:57,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:20:57,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:20:57,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:20:57,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:20:57,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:20:57,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 487 transitions, 7559 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:20:57,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:20:57,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:20:57,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:20:58,497 INFO L124 PetriNetUnfolderBase]: 960/1777 cut-off events. [2024-06-21 16:20:58,497 INFO L125 PetriNetUnfolderBase]: For 470993/470993 co-relation queries the response was YES. [2024-06-21 16:20:58,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19803 conditions, 1777 events. 960/1777 cut-off events. For 470993/470993 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 10817 event pairs, 58 based on Foata normal form. 2/1773 useless extension candidates. Maximal degree in co-relation 19596. Up to 1324 conditions per place. [2024-06-21 16:20:58,527 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 393 selfloop transitions, 111 changer transitions 0/507 dead transitions. [2024-06-21 16:20:58,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 507 transitions, 9411 flow [2024-06-21 16:20:58,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:20:58,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:20:58,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 149 transitions. [2024-06-21 16:20:58,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42329545454545453 [2024-06-21 16:20:58,529 INFO L175 Difference]: Start difference. First operand has 453 places, 487 transitions, 7559 flow. Second operand 11 states and 149 transitions. [2024-06-21 16:20:58,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 507 transitions, 9411 flow [2024-06-21 16:21:00,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 507 transitions, 9307 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-21 16:21:00,220 INFO L231 Difference]: Finished difference. Result has 459 places, 493 transitions, 7935 flow [2024-06-21 16:21:00,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7455, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7935, PETRI_PLACES=459, PETRI_TRANSITIONS=493} [2024-06-21 16:21:00,221 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 428 predicate places. [2024-06-21 16:21:00,221 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 493 transitions, 7935 flow [2024-06-21 16:21:00,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:21:00,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:21:00,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:21:00,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-21 16:21:00,222 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:21:00,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:21:00,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1083670085, now seen corresponding path program 3 times [2024-06-21 16:21:00,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:21:00,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479843835] [2024-06-21 16:21:00,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:21:00,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:21:00,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:21:01,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:21:01,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:21:01,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479843835] [2024-06-21 16:21:01,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479843835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:21:01,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:21:01,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:21:01,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309483616] [2024-06-21 16:21:01,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:21:01,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:21:01,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:21:01,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:21:01,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:21:01,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:21:01,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 493 transitions, 7935 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-21 16:21:01,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:21:01,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:21:01,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:21:01,729 INFO L124 PetriNetUnfolderBase]: 958/1777 cut-off events. [2024-06-21 16:21:01,729 INFO L125 PetriNetUnfolderBase]: For 458954/458954 co-relation queries the response was YES. [2024-06-21 16:21:01,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19832 conditions, 1777 events. 958/1777 cut-off events. For 458954/458954 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 10869 event pairs, 85 based on Foata normal form. 1/1776 useless extension candidates. Maximal degree in co-relation 19623. Up to 1598 conditions per place. [2024-06-21 16:21:01,762 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 470 selfloop transitions, 29 changer transitions 0/502 dead transitions. [2024-06-21 16:21:01,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 502 transitions, 8953 flow [2024-06-21 16:21:01,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:21:01,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:21:01,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-21 16:21:01,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-21 16:21:01,763 INFO L175 Difference]: Start difference. First operand has 459 places, 493 transitions, 7935 flow. Second operand 10 states and 119 transitions. [2024-06-21 16:21:01,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 502 transitions, 8953 flow [2024-06-21 16:21:03,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 502 transitions, 8267 flow, removed 115 selfloop flow, removed 9 redundant places. [2024-06-21 16:21:03,241 INFO L231 Difference]: Finished difference. Result has 460 places, 493 transitions, 7318 flow [2024-06-21 16:21:03,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7249, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7318, PETRI_PLACES=460, PETRI_TRANSITIONS=493} [2024-06-21 16:21:03,241 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 429 predicate places. [2024-06-21 16:21:03,241 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 493 transitions, 7318 flow [2024-06-21 16:21:03,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-21 16:21:03,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:21:03,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:21:03,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-21 16:21:03,242 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:21:03,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:21:03,242 INFO L85 PathProgramCache]: Analyzing trace with hash 74257075, now seen corresponding path program 25 times [2024-06-21 16:21:03,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:21:03,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960908223] [2024-06-21 16:21:03,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:21:03,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:21:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:21:04,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:21:04,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:21:04,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960908223] [2024-06-21 16:21:04,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960908223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:21:04,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:21:04,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:21:04,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891618371] [2024-06-21 16:21:04,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:21:04,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:21:04,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:21:04,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:21:04,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:21:04,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:21:04,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 493 transitions, 7318 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:21:04,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:21:04,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:21:04,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:21:04,992 INFO L124 PetriNetUnfolderBase]: 954/1771 cut-off events. [2024-06-21 16:21:04,992 INFO L125 PetriNetUnfolderBase]: For 453310/453310 co-relation queries the response was YES. [2024-06-21 16:21:05,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18816 conditions, 1771 events. 954/1771 cut-off events. For 453310/453310 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 10841 event pairs, 47 based on Foata normal form. 2/1768 useless extension candidates. Maximal degree in co-relation 18607. Up to 1425 conditions per place. [2024-06-21 16:21:05,020 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 421 selfloop transitions, 84 changer transitions 0/508 dead transitions. [2024-06-21 16:21:05,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 508 transitions, 8944 flow [2024-06-21 16:21:05,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:21:05,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:21:05,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-21 16:21:05,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-21 16:21:05,022 INFO L175 Difference]: Start difference. First operand has 460 places, 493 transitions, 7318 flow. Second operand 11 states and 144 transitions. [2024-06-21 16:21:05,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 508 transitions, 8944 flow [2024-06-21 16:21:06,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 508 transitions, 8779 flow, removed 48 selfloop flow, removed 10 redundant places. [2024-06-21 16:21:06,476 INFO L231 Difference]: Finished difference. Result has 461 places, 493 transitions, 7333 flow [2024-06-21 16:21:06,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7157, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7333, PETRI_PLACES=461, PETRI_TRANSITIONS=493} [2024-06-21 16:21:06,484 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 430 predicate places. [2024-06-21 16:21:06,484 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 493 transitions, 7333 flow [2024-06-21 16:21:06,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:21:06,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:21:06,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:21:06,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-21 16:21:06,485 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:21:06,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:21:06,486 INFO L85 PathProgramCache]: Analyzing trace with hash 563506895, now seen corresponding path program 11 times [2024-06-21 16:21:06,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:21:06,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697687945] [2024-06-21 16:21:06,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:21:06,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:21:06,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:21:07,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:21:07,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:21:07,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697687945] [2024-06-21 16:21:07,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697687945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:21:07,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:21:07,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:21:07,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662326186] [2024-06-21 16:21:07,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:21:07,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:21:07,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:21:07,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:21:07,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:21:07,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:21:07,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 493 transitions, 7333 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:21:07,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:21:07,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:21:07,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:21:08,543 INFO L124 PetriNetUnfolderBase]: 958/1779 cut-off events. [2024-06-21 16:21:08,544 INFO L125 PetriNetUnfolderBase]: For 455439/455439 co-relation queries the response was YES. [2024-06-21 16:21:08,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18946 conditions, 1779 events. 958/1779 cut-off events. For 455439/455439 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 10885 event pairs, 39 based on Foata normal form. 2/1776 useless extension candidates. Maximal degree in co-relation 18737. Up to 1548 conditions per place. [2024-06-21 16:21:08,569 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 456 selfloop transitions, 47 changer transitions 0/506 dead transitions. [2024-06-21 16:21:08,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 506 transitions, 8412 flow [2024-06-21 16:21:08,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:21:08,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:21:08,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-21 16:21:08,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-21 16:21:08,570 INFO L175 Difference]: Start difference. First operand has 461 places, 493 transitions, 7333 flow. Second operand 11 states and 133 transitions. [2024-06-21 16:21:08,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 506 transitions, 8412 flow [2024-06-21 16:21:10,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 506 transitions, 8229 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-21 16:21:10,130 INFO L231 Difference]: Finished difference. Result has 462 places, 494 transitions, 7288 flow [2024-06-21 16:21:10,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7150, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7288, PETRI_PLACES=462, PETRI_TRANSITIONS=494} [2024-06-21 16:21:10,131 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 431 predicate places. [2024-06-21 16:21:10,131 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 494 transitions, 7288 flow [2024-06-21 16:21:10,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:21:10,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:21:10,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:21:10,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-21 16:21:10,132 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:21:10,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:21:10,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1941344783, now seen corresponding path program 12 times [2024-06-21 16:21:10,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:21:10,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561207697] [2024-06-21 16:21:10,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:21:10,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:21:10,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:21:11,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:21:11,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:21:11,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561207697] [2024-06-21 16:21:11,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561207697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:21:11,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:21:11,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:21:11,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77148768] [2024-06-21 16:21:11,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:21:11,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:21:11,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:21:11,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:21:11,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:21:11,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:21:11,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 494 transitions, 7288 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:21:11,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:21:11,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:21:11,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:21:11,971 INFO L124 PetriNetUnfolderBase]: 955/1770 cut-off events. [2024-06-21 16:21:11,972 INFO L125 PetriNetUnfolderBase]: For 441829/441829 co-relation queries the response was YES. [2024-06-21 16:21:11,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18602 conditions, 1770 events. 955/1770 cut-off events. For 441829/441829 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 10844 event pairs, 74 based on Foata normal form. 2/1770 useless extension candidates. Maximal degree in co-relation 18392. Up to 1595 conditions per place. [2024-06-21 16:21:11,999 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 481 selfloop transitions, 22 changer transitions 0/506 dead transitions. [2024-06-21 16:21:11,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 506 transitions, 8320 flow [2024-06-21 16:21:12,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:21:12,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:21:12,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-21 16:21:12,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-21 16:21:12,001 INFO L175 Difference]: Start difference. First operand has 462 places, 494 transitions, 7288 flow. Second operand 11 states and 128 transitions. [2024-06-21 16:21:12,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 506 transitions, 8320 flow [2024-06-21 16:21:13,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 506 transitions, 8156 flow, removed 34 selfloop flow, removed 10 redundant places. [2024-06-21 16:21:13,456 INFO L231 Difference]: Finished difference. Result has 463 places, 494 transitions, 7172 flow [2024-06-21 16:21:13,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7124, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7172, PETRI_PLACES=463, PETRI_TRANSITIONS=494} [2024-06-21 16:21:13,456 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 432 predicate places. [2024-06-21 16:21:13,457 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 494 transitions, 7172 flow [2024-06-21 16:21:13,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:21:13,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:21:13,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:21:13,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-21 16:21:13,457 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:21:13,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:21:13,458 INFO L85 PathProgramCache]: Analyzing trace with hash 304253143, now seen corresponding path program 13 times [2024-06-21 16:21:13,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:21:13,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963175487] [2024-06-21 16:21:13,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:21:13,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:21:13,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:21:14,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:21:14,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:21:14,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963175487] [2024-06-21 16:21:14,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963175487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:21:14,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:21:14,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:21:14,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171988475] [2024-06-21 16:21:14,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:21:14,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:21:14,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:21:14,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:21:14,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:21:14,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:21:14,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 494 transitions, 7172 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:21:14,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:21:14,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:21:14,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:21:15,390 INFO L124 PetriNetUnfolderBase]: 966/1794 cut-off events. [2024-06-21 16:21:15,391 INFO L125 PetriNetUnfolderBase]: For 468246/468246 co-relation queries the response was YES. [2024-06-21 16:21:15,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18967 conditions, 1794 events. 966/1794 cut-off events. For 468246/468246 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 11033 event pairs, 39 based on Foata normal form. 2/1792 useless extension candidates. Maximal degree in co-relation 18758. Up to 1533 conditions per place. [2024-06-21 16:21:15,419 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 457 selfloop transitions, 50 changer transitions 0/510 dead transitions. [2024-06-21 16:21:15,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 510 transitions, 8577 flow [2024-06-21 16:21:15,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:21:15,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:21:15,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-21 16:21:15,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-21 16:21:15,420 INFO L175 Difference]: Start difference. First operand has 463 places, 494 transitions, 7172 flow. Second operand 11 states and 135 transitions. [2024-06-21 16:21:15,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 510 transitions, 8577 flow [2024-06-21 16:21:16,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 510 transitions, 8508 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-21 16:21:16,934 INFO L231 Difference]: Finished difference. Result has 464 places, 496 transitions, 7289 flow [2024-06-21 16:21:16,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7103, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7289, PETRI_PLACES=464, PETRI_TRANSITIONS=496} [2024-06-21 16:21:16,934 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 433 predicate places. [2024-06-21 16:21:16,934 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 496 transitions, 7289 flow [2024-06-21 16:21:16,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:21:16,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:21:16,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:21:16,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-21 16:21:16,935 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:21:16,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:21:16,936 INFO L85 PathProgramCache]: Analyzing trace with hash 555166097, now seen corresponding path program 26 times [2024-06-21 16:21:16,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:21:16,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031836695] [2024-06-21 16:21:16,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:21:16,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:21:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:21:17,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:21:17,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:21:17,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031836695] [2024-06-21 16:21:17,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031836695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:21:17,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:21:17,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:21:17,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535317399] [2024-06-21 16:21:17,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:21:17,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:21:17,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:21:17,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:21:17,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:21:17,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:21:17,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 496 transitions, 7289 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:21:17,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:21:17,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:21:17,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:21:18,666 INFO L124 PetriNetUnfolderBase]: 977/1814 cut-off events. [2024-06-21 16:21:18,666 INFO L125 PetriNetUnfolderBase]: For 484740/484740 co-relation queries the response was YES. [2024-06-21 16:21:18,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19456 conditions, 1814 events. 977/1814 cut-off events. For 484740/484740 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 11161 event pairs, 54 based on Foata normal form. 2/1810 useless extension candidates. Maximal degree in co-relation 19247. Up to 1377 conditions per place. [2024-06-21 16:21:18,689 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 413 selfloop transitions, 105 changer transitions 0/521 dead transitions. [2024-06-21 16:21:18,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 521 transitions, 9765 flow [2024-06-21 16:21:18,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:21:18,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:21:18,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 154 transitions. [2024-06-21 16:21:18,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-21 16:21:18,691 INFO L175 Difference]: Start difference. First operand has 464 places, 496 transitions, 7289 flow. Second operand 11 states and 154 transitions. [2024-06-21 16:21:18,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 521 transitions, 9765 flow [2024-06-21 16:21:20,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 521 transitions, 9656 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-21 16:21:20,231 INFO L231 Difference]: Finished difference. Result has 468 places, 502 transitions, 7618 flow [2024-06-21 16:21:20,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7182, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7618, PETRI_PLACES=468, PETRI_TRANSITIONS=502} [2024-06-21 16:21:20,236 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 437 predicate places. [2024-06-21 16:21:20,236 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 502 transitions, 7618 flow [2024-06-21 16:21:20,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:21:20,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:21:20,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:21:20,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-21 16:21:20,237 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:21:20,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:21:20,237 INFO L85 PathProgramCache]: Analyzing trace with hash -19797855, now seen corresponding path program 27 times [2024-06-21 16:21:20,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:21:20,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314182832] [2024-06-21 16:21:20,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:21:20,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:21:20,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:21:21,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:21:21,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:21:21,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314182832] [2024-06-21 16:21:21,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314182832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:21:21,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:21:21,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:21:21,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585047473] [2024-06-21 16:21:21,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:21:21,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:21:21,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:21:21,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:21:21,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:21:21,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:21:21,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 502 transitions, 7618 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:21:21,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:21:21,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:21:21,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:21:22,034 INFO L124 PetriNetUnfolderBase]: 980/1820 cut-off events. [2024-06-21 16:21:22,034 INFO L125 PetriNetUnfolderBase]: For 481098/481098 co-relation queries the response was YES. [2024-06-21 16:21:22,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19680 conditions, 1820 events. 980/1820 cut-off events. For 481098/481098 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 11234 event pairs, 76 based on Foata normal form. 1/1819 useless extension candidates. Maximal degree in co-relation 19469. Up to 1664 conditions per place. [2024-06-21 16:21:22,063 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 492 selfloop transitions, 19 changer transitions 0/514 dead transitions. [2024-06-21 16:21:22,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 514 transitions, 8722 flow [2024-06-21 16:21:22,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:21:22,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:21:22,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-21 16:21:22,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-21 16:21:22,070 INFO L175 Difference]: Start difference. First operand has 468 places, 502 transitions, 7618 flow. Second operand 11 states and 125 transitions. [2024-06-21 16:21:22,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 514 transitions, 8722 flow [2024-06-21 16:21:23,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 514 transitions, 8280 flow, removed 74 selfloop flow, removed 9 redundant places. [2024-06-21 16:21:23,619 INFO L231 Difference]: Finished difference. Result has 470 places, 504 transitions, 7283 flow [2024-06-21 16:21:23,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7176, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7283, PETRI_PLACES=470, PETRI_TRANSITIONS=504} [2024-06-21 16:21:23,620 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 439 predicate places. [2024-06-21 16:21:23,620 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 504 transitions, 7283 flow [2024-06-21 16:21:23,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:21:23,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:21:23,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:21:23,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-21 16:21:23,621 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:21:23,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:21:23,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1551456349, now seen corresponding path program 14 times [2024-06-21 16:21:23,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:21:23,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168847620] [2024-06-21 16:21:23,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:21:23,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:21:23,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:21:24,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:21:24,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:21:24,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168847620] [2024-06-21 16:21:24,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168847620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:21:24,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:21:24,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:21:24,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775469657] [2024-06-21 16:21:24,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:21:24,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:21:24,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:21:24,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:21:24,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:21:24,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:21:24,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 504 transitions, 7283 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:21:24,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:21:24,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:21:24,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:21:25,415 INFO L124 PetriNetUnfolderBase]: 984/1827 cut-off events. [2024-06-21 16:21:25,416 INFO L125 PetriNetUnfolderBase]: For 497952/497952 co-relation queries the response was YES. [2024-06-21 16:21:25,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19328 conditions, 1827 events. 984/1827 cut-off events. For 497952/497952 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 11276 event pairs, 41 based on Foata normal form. 2/1825 useless extension candidates. Maximal degree in co-relation 19117. Up to 1622 conditions per place. [2024-06-21 16:21:25,445 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 482 selfloop transitions, 32 changer transitions 0/517 dead transitions. [2024-06-21 16:21:25,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 517 transitions, 8390 flow [2024-06-21 16:21:25,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:21:25,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:21:25,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-21 16:21:25,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 16:21:25,446 INFO L175 Difference]: Start difference. First operand has 470 places, 504 transitions, 7283 flow. Second operand 10 states and 120 transitions. [2024-06-21 16:21:25,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 517 transitions, 8390 flow [2024-06-21 16:21:26,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 517 transitions, 8307 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-21 16:21:26,984 INFO L231 Difference]: Finished difference. Result has 471 places, 505 transitions, 7304 flow [2024-06-21 16:21:26,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7200, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7304, PETRI_PLACES=471, PETRI_TRANSITIONS=505} [2024-06-21 16:21:26,984 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 440 predicate places. [2024-06-21 16:21:26,984 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 505 transitions, 7304 flow [2024-06-21 16:21:26,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:21:26,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:21:26,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:21:26,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-21 16:21:26,985 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:21:26,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:21:26,985 INFO L85 PathProgramCache]: Analyzing trace with hash 555175025, now seen corresponding path program 15 times [2024-06-21 16:21:26,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:21:26,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794647766] [2024-06-21 16:21:26,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:21:26,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:21:26,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:21:28,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:21:28,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:21:28,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794647766] [2024-06-21 16:21:28,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794647766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:21:28,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:21:28,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:21:28,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169300762] [2024-06-21 16:21:28,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:21:28,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:21:28,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:21:28,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:21:28,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:21:28,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:21:28,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 505 transitions, 7304 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:21:28,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:21:28,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:21:28,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:21:28,879 INFO L124 PetriNetUnfolderBase]: 981/1823 cut-off events. [2024-06-21 16:21:28,880 INFO L125 PetriNetUnfolderBase]: For 485033/485033 co-relation queries the response was YES. [2024-06-21 16:21:28,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19052 conditions, 1823 events. 981/1823 cut-off events. For 485033/485033 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 11296 event pairs, 40 based on Foata normal form. 2/1820 useless extension candidates. Maximal degree in co-relation 18840. Up to 1602 conditions per place. [2024-06-21 16:21:28,908 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 475 selfloop transitions, 40 changer transitions 0/518 dead transitions. [2024-06-21 16:21:28,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 518 transitions, 8381 flow [2024-06-21 16:21:28,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:21:28,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:21:28,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-21 16:21:28,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-21 16:21:28,910 INFO L175 Difference]: Start difference. First operand has 471 places, 505 transitions, 7304 flow. Second operand 11 states and 133 transitions. [2024-06-21 16:21:28,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 518 transitions, 8381 flow [2024-06-21 16:21:30,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 518 transitions, 8263 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-21 16:21:30,573 INFO L231 Difference]: Finished difference. Result has 474 places, 506 transitions, 7282 flow [2024-06-21 16:21:30,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7186, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7282, PETRI_PLACES=474, PETRI_TRANSITIONS=506} [2024-06-21 16:21:30,573 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 443 predicate places. [2024-06-21 16:21:30,573 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 506 transitions, 7282 flow [2024-06-21 16:21:30,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:21:30,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:21:30,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:21:30,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-21 16:21:30,574 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:21:30,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:21:30,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1330057387, now seen corresponding path program 28 times [2024-06-21 16:21:30,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:21:30,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495851266] [2024-06-21 16:21:30,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:21:30,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:21:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:21:31,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:21:31,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:21:31,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495851266] [2024-06-21 16:21:31,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495851266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:21:31,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:21:31,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:21:31,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794041190] [2024-06-21 16:21:31,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:21:31,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:21:31,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:21:31,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:21:31,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:21:31,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:21:31,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 506 transitions, 7282 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:21:31,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:21:31,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:21:31,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:21:32,338 INFO L124 PetriNetUnfolderBase]: 989/1841 cut-off events. [2024-06-21 16:21:32,338 INFO L125 PetriNetUnfolderBase]: For 493087/493087 co-relation queries the response was YES. [2024-06-21 16:21:32,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19349 conditions, 1841 events. 989/1841 cut-off events. For 493087/493087 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 11418 event pairs, 51 based on Foata normal form. 1/1836 useless extension candidates. Maximal degree in co-relation 19136. Up to 1393 conditions per place. [2024-06-21 16:21:32,370 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 404 selfloop transitions, 118 changer transitions 0/525 dead transitions. [2024-06-21 16:21:32,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 525 transitions, 9390 flow [2024-06-21 16:21:32,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:21:32,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:21:32,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-06-21 16:21:32,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-06-21 16:21:32,371 INFO L175 Difference]: Start difference. First operand has 474 places, 506 transitions, 7282 flow. Second operand 11 states and 150 transitions. [2024-06-21 16:21:32,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 525 transitions, 9390 flow [2024-06-21 16:21:34,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 525 transitions, 9304 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-21 16:21:34,096 INFO L231 Difference]: Finished difference. Result has 477 places, 510 transitions, 7585 flow [2024-06-21 16:21:34,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7196, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7585, PETRI_PLACES=477, PETRI_TRANSITIONS=510} [2024-06-21 16:21:34,097 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 446 predicate places. [2024-06-21 16:21:34,097 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 510 transitions, 7585 flow [2024-06-21 16:21:34,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:21:34,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:21:34,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:21:34,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-21 16:21:34,098 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:21:34,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:21:34,098 INFO L85 PathProgramCache]: Analyzing trace with hash 2068223803, now seen corresponding path program 4 times [2024-06-21 16:21:34,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:21:34,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137076295] [2024-06-21 16:21:34,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:21:34,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:21:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:21:35,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:21:35,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:21:35,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137076295] [2024-06-21 16:21:35,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137076295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:21:35,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:21:35,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:21:35,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231373935] [2024-06-21 16:21:35,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:21:35,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:21:35,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:21:35,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:21:35,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:21:35,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:21:35,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 510 transitions, 7585 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-21 16:21:35,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:21:35,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:21:35,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:21:35,736 INFO L124 PetriNetUnfolderBase]: 987/1838 cut-off events. [2024-06-21 16:21:35,736 INFO L125 PetriNetUnfolderBase]: For 490520/490520 co-relation queries the response was YES. [2024-06-21 16:21:35,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19394 conditions, 1838 events. 987/1838 cut-off events. For 490520/490520 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 11417 event pairs, 52 based on Foata normal form. 1/1833 useless extension candidates. Maximal degree in co-relation 19180. Up to 1168 conditions per place. [2024-06-21 16:21:35,766 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 347 selfloop transitions, 170 changer transitions 0/520 dead transitions. [2024-06-21 16:21:35,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 520 transitions, 8660 flow [2024-06-21 16:21:35,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 16:21:35,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 16:21:35,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-21 16:21:35,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-21 16:21:35,767 INFO L175 Difference]: Start difference. First operand has 477 places, 510 transitions, 7585 flow. Second operand 10 states and 136 transitions. [2024-06-21 16:21:35,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 520 transitions, 8660 flow [2024-06-21 16:21:37,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 520 transitions, 8279 flow, removed 68 selfloop flow, removed 8 redundant places. [2024-06-21 16:21:37,408 INFO L231 Difference]: Finished difference. Result has 479 places, 510 transitions, 7551 flow [2024-06-21 16:21:37,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7204, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7551, PETRI_PLACES=479, PETRI_TRANSITIONS=510} [2024-06-21 16:21:37,409 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 448 predicate places. [2024-06-21 16:21:37,409 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 510 transitions, 7551 flow [2024-06-21 16:21:37,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-21 16:21:37,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:21:37,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:21:37,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-21 16:21:37,409 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:21:37,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:21:37,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1330050877, now seen corresponding path program 29 times [2024-06-21 16:21:37,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:21:37,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445366776] [2024-06-21 16:21:37,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:21:37,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:21:37,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:21:38,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:21:38,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:21:38,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445366776] [2024-06-21 16:21:38,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445366776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:21:38,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:21:38,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:21:38,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622519311] [2024-06-21 16:21:38,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:21:38,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:21:38,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:21:38,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:21:38,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:21:38,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:21:38,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 510 transitions, 7551 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:21:38,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:21:38,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:21:38,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:21:39,664 INFO L124 PetriNetUnfolderBase]: 985/1835 cut-off events. [2024-06-21 16:21:39,664 INFO L125 PetriNetUnfolderBase]: For 487604/487604 co-relation queries the response was YES. [2024-06-21 16:21:39,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19117 conditions, 1835 events. 985/1835 cut-off events. For 487604/487604 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 11422 event pairs, 53 based on Foata normal form. 1/1830 useless extension candidates. Maximal degree in co-relation 18903. Up to 1459 conditions per place. [2024-06-21 16:21:39,695 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 427 selfloop transitions, 94 changer transitions 0/524 dead transitions. [2024-06-21 16:21:39,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 524 transitions, 8694 flow [2024-06-21 16:21:39,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:21:39,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:21:39,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-21 16:21:39,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 16:21:39,696 INFO L175 Difference]: Start difference. First operand has 479 places, 510 transitions, 7551 flow. Second operand 12 states and 156 transitions. [2024-06-21 16:21:39,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 524 transitions, 8694 flow [2024-06-21 16:21:41,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 524 transitions, 8319 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-21 16:21:41,474 INFO L231 Difference]: Finished difference. Result has 480 places, 513 transitions, 7434 flow [2024-06-21 16:21:41,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7176, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7434, PETRI_PLACES=480, PETRI_TRANSITIONS=513} [2024-06-21 16:21:41,474 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 449 predicate places. [2024-06-21 16:21:41,474 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 513 transitions, 7434 flow [2024-06-21 16:21:41,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:21:41,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:21:41,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:21:41,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-21 16:21:41,475 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:21:41,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:21:41,475 INFO L85 PathProgramCache]: Analyzing trace with hash 2068215185, now seen corresponding path program 30 times [2024-06-21 16:21:41,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:21:41,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355500917] [2024-06-21 16:21:41,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:21:41,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:21:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:21:42,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:21:42,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:21:42,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355500917] [2024-06-21 16:21:42,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355500917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:21:42,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:21:42,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:21:42,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470918215] [2024-06-21 16:21:42,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:21:42,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:21:42,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:21:42,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:21:42,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:21:42,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:21:42,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 513 transitions, 7434 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:21:42,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:21:42,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:21:42,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:21:43,320 INFO L124 PetriNetUnfolderBase]: 988/1842 cut-off events. [2024-06-21 16:21:43,321 INFO L125 PetriNetUnfolderBase]: For 484500/484500 co-relation queries the response was YES. [2024-06-21 16:21:43,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19007 conditions, 1842 events. 988/1842 cut-off events. For 484500/484500 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 11460 event pairs, 52 based on Foata normal form. 1/1837 useless extension candidates. Maximal degree in co-relation 18793. Up to 1170 conditions per place. [2024-06-21 16:21:43,352 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 335 selfloop transitions, 189 changer transitions 0/527 dead transitions. [2024-06-21 16:21:43,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 527 transitions, 9144 flow [2024-06-21 16:21:43,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:21:43,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:21:43,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-21 16:21:43,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-21 16:21:43,354 INFO L175 Difference]: Start difference. First operand has 480 places, 513 transitions, 7434 flow. Second operand 11 states and 146 transitions. [2024-06-21 16:21:43,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 527 transitions, 9144 flow [2024-06-21 16:21:45,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 527 transitions, 8835 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-06-21 16:21:45,056 INFO L231 Difference]: Finished difference. Result has 484 places, 515 transitions, 7572 flow [2024-06-21 16:21:45,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7125, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7572, PETRI_PLACES=484, PETRI_TRANSITIONS=515} [2024-06-21 16:21:45,056 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 453 predicate places. [2024-06-21 16:21:45,056 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 515 transitions, 7572 flow [2024-06-21 16:21:45,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:21:45,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:21:45,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:21:45,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-21 16:21:45,057 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:21:45,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:21:45,057 INFO L85 PathProgramCache]: Analyzing trace with hash 2068224113, now seen corresponding path program 16 times [2024-06-21 16:21:45,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:21:45,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187619400] [2024-06-21 16:21:45,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:21:45,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:21:45,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:21:46,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:21:46,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:21:46,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187619400] [2024-06-21 16:21:46,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187619400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:21:46,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:21:46,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:21:46,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501052300] [2024-06-21 16:21:46,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:21:46,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:21:46,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:21:46,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:21:46,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:21:46,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:21:46,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 515 transitions, 7572 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:21:46,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:21:46,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:21:46,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:21:47,089 INFO L124 PetriNetUnfolderBase]: 992/1849 cut-off events. [2024-06-21 16:21:47,089 INFO L125 PetriNetUnfolderBase]: For 503169/503169 co-relation queries the response was YES. [2024-06-21 16:21:47,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19344 conditions, 1849 events. 992/1849 cut-off events. For 503169/503169 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 11464 event pairs, 39 based on Foata normal form. 2/1846 useless extension candidates. Maximal degree in co-relation 19128. Up to 1558 conditions per place. [2024-06-21 16:21:47,122 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 458 selfloop transitions, 67 changer transitions 0/528 dead transitions. [2024-06-21 16:21:47,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 528 transitions, 8699 flow [2024-06-21 16:21:47,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:21:47,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:21:47,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-21 16:21:47,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-21 16:21:47,123 INFO L175 Difference]: Start difference. First operand has 484 places, 515 transitions, 7572 flow. Second operand 11 states and 134 transitions. [2024-06-21 16:21:47,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 528 transitions, 8699 flow [2024-06-21 16:21:48,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 528 transitions, 8285 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-21 16:21:48,922 INFO L231 Difference]: Finished difference. Result has 487 places, 516 transitions, 7340 flow [2024-06-21 16:21:48,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7158, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7340, PETRI_PLACES=487, PETRI_TRANSITIONS=516} [2024-06-21 16:21:48,923 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 456 predicate places. [2024-06-21 16:21:48,923 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 516 transitions, 7340 flow [2024-06-21 16:21:48,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:21:48,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:21:48,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:21:48,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-21 16:21:48,923 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:21:48,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:21:48,924 INFO L85 PathProgramCache]: Analyzing trace with hash 2076267683, now seen corresponding path program 17 times [2024-06-21 16:21:48,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:21:48,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821545512] [2024-06-21 16:21:48,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:21:48,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:21:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:21:50,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:21:50,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:21:50,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821545512] [2024-06-21 16:21:50,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821545512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:21:50,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:21:50,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:21:50,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962777602] [2024-06-21 16:21:50,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:21:50,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:21:50,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:21:50,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:21:50,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:21:50,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:21:50,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 516 transitions, 7340 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:21:50,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:21:50,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:21:50,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:21:51,018 INFO L124 PetriNetUnfolderBase]: 999/1862 cut-off events. [2024-06-21 16:21:51,019 INFO L125 PetriNetUnfolderBase]: For 509392/509392 co-relation queries the response was YES. [2024-06-21 16:21:51,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19213 conditions, 1862 events. 999/1862 cut-off events. For 509392/509392 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 11585 event pairs, 41 based on Foata normal form. 2/1859 useless extension candidates. Maximal degree in co-relation 18996. Up to 1571 conditions per place. [2024-06-21 16:21:51,048 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 462 selfloop transitions, 66 changer transitions 0/531 dead transitions. [2024-06-21 16:21:51,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 531 transitions, 8492 flow [2024-06-21 16:21:51,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:21:51,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:21:51,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-21 16:21:51,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-21 16:21:51,050 INFO L175 Difference]: Start difference. First operand has 487 places, 516 transitions, 7340 flow. Second operand 11 states and 135 transitions. [2024-06-21 16:21:51,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 531 transitions, 8492 flow [2024-06-21 16:21:52,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 531 transitions, 8313 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-21 16:21:52,929 INFO L231 Difference]: Finished difference. Result has 490 places, 519 transitions, 7367 flow [2024-06-21 16:21:52,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7161, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7367, PETRI_PLACES=490, PETRI_TRANSITIONS=519} [2024-06-21 16:21:52,930 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 459 predicate places. [2024-06-21 16:21:52,930 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 519 transitions, 7367 flow [2024-06-21 16:21:52,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:21:52,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:21:52,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:21:52,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-21 16:21:52,931 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:21:52,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:21:52,931 INFO L85 PathProgramCache]: Analyzing trace with hash 2076566213, now seen corresponding path program 18 times [2024-06-21 16:21:52,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:21:52,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760018545] [2024-06-21 16:21:52,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:21:52,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:21:52,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:21:54,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:21:54,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:21:54,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760018545] [2024-06-21 16:21:54,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760018545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:21:54,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:21:54,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:21:54,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959482882] [2024-06-21 16:21:54,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:21:54,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:21:54,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:21:54,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:21:54,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:21:54,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:21:54,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 519 transitions, 7367 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:21:54,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:21:54,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:21:54,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:21:54,886 INFO L124 PetriNetUnfolderBase]: 1003/1870 cut-off events. [2024-06-21 16:21:54,886 INFO L125 PetriNetUnfolderBase]: For 516442/516442 co-relation queries the response was YES. [2024-06-21 16:21:54,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19293 conditions, 1870 events. 1003/1870 cut-off events. For 516442/516442 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 11732 event pairs, 39 based on Foata normal form. 2/1867 useless extension candidates. Maximal degree in co-relation 19075. Up to 1541 conditions per place. [2024-06-21 16:21:54,916 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 457 selfloop transitions, 74 changer transitions 0/534 dead transitions. [2024-06-21 16:21:54,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 534 transitions, 8806 flow [2024-06-21 16:21:54,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:21:54,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:21:54,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-21 16:21:54,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-21 16:21:54,917 INFO L175 Difference]: Start difference. First operand has 490 places, 519 transitions, 7367 flow. Second operand 11 states and 138 transitions. [2024-06-21 16:21:54,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 534 transitions, 8806 flow [2024-06-21 16:21:56,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 534 transitions, 8627 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-21 16:21:56,725 INFO L231 Difference]: Finished difference. Result has 493 places, 520 transitions, 7386 flow [2024-06-21 16:21:56,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7188, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7386, PETRI_PLACES=493, PETRI_TRANSITIONS=520} [2024-06-21 16:21:56,726 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 462 predicate places. [2024-06-21 16:21:56,726 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 520 transitions, 7386 flow [2024-06-21 16:21:56,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:21:56,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:21:56,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:21:56,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-21 16:21:56,727 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:21:56,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:21:56,727 INFO L85 PathProgramCache]: Analyzing trace with hash 2076555983, now seen corresponding path program 19 times [2024-06-21 16:21:56,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:21:56,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489536277] [2024-06-21 16:21:56,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:21:56,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:21:56,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:21:57,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:21:57,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:21:57,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489536277] [2024-06-21 16:21:57,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489536277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:21:57,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:21:57,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:21:57,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353543617] [2024-06-21 16:21:57,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:21:57,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:21:57,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:21:57,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:21:57,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:21:58,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:21:58,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 520 transitions, 7386 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:21:58,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:21:58,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:21:58,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:21:58,652 INFO L124 PetriNetUnfolderBase]: 1000/1865 cut-off events. [2024-06-21 16:21:58,653 INFO L125 PetriNetUnfolderBase]: For 500963/500963 co-relation queries the response was YES. [2024-06-21 16:21:58,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18931 conditions, 1865 events. 1000/1865 cut-off events. For 500963/500963 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 11663 event pairs, 40 based on Foata normal form. 2/1862 useless extension candidates. Maximal degree in co-relation 18712. Up to 1565 conditions per place. [2024-06-21 16:21:58,684 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 458 selfloop transitions, 71 changer transitions 0/532 dead transitions. [2024-06-21 16:21:58,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 532 transitions, 8479 flow [2024-06-21 16:21:58,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:21:58,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:21:58,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-21 16:21:58,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-21 16:21:58,685 INFO L175 Difference]: Start difference. First operand has 493 places, 520 transitions, 7386 flow. Second operand 11 states and 136 transitions. [2024-06-21 16:21:58,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 532 transitions, 8479 flow [2024-06-21 16:22:00,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 532 transitions, 8184 flow, removed 43 selfloop flow, removed 11 redundant places. [2024-06-21 16:22:00,512 INFO L231 Difference]: Finished difference. Result has 493 places, 520 transitions, 7237 flow [2024-06-21 16:22:00,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7091, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7237, PETRI_PLACES=493, PETRI_TRANSITIONS=520} [2024-06-21 16:22:00,512 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 462 predicate places. [2024-06-21 16:22:00,512 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 520 transitions, 7237 flow [2024-06-21 16:22:00,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:22:00,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:22:00,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:22:00,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-21 16:22:00,513 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:22:00,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:22:00,513 INFO L85 PathProgramCache]: Analyzing trace with hash 2076258755, now seen corresponding path program 31 times [2024-06-21 16:22:00,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:22:00,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447715015] [2024-06-21 16:22:00,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:22:00,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:22:00,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:22:01,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:22:01,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:22:01,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447715015] [2024-06-21 16:22:01,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447715015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:22:01,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:22:01,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:22:01,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208612042] [2024-06-21 16:22:01,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:22:01,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:22:01,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:22:01,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:22:01,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:22:01,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:22:01,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 520 transitions, 7237 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:22:01,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:22:01,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:22:01,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:22:02,236 INFO L124 PetriNetUnfolderBase]: 998/1863 cut-off events. [2024-06-21 16:22:02,236 INFO L125 PetriNetUnfolderBase]: For 483646/483646 co-relation queries the response was YES. [2024-06-21 16:22:02,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18429 conditions, 1863 events. 998/1863 cut-off events. For 483646/483646 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 11619 event pairs, 53 based on Foata normal form. 1/1858 useless extension candidates. Maximal degree in co-relation 18213. Up to 1192 conditions per place. [2024-06-21 16:22:02,266 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 340 selfloop transitions, 188 changer transitions 0/531 dead transitions. [2024-06-21 16:22:02,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 531 transitions, 8613 flow [2024-06-21 16:22:02,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:22:02,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:22:02,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-21 16:22:02,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-21 16:22:02,267 INFO L175 Difference]: Start difference. First operand has 493 places, 520 transitions, 7237 flow. Second operand 11 states and 146 transitions. [2024-06-21 16:22:02,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 531 transitions, 8613 flow [2024-06-21 16:22:03,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 531 transitions, 8226 flow, removed 30 selfloop flow, removed 15 redundant places. [2024-06-21 16:22:03,931 INFO L231 Difference]: Finished difference. Result has 489 places, 520 transitions, 7231 flow [2024-06-21 16:22:03,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6850, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7231, PETRI_PLACES=489, PETRI_TRANSITIONS=520} [2024-06-21 16:22:03,932 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 458 predicate places. [2024-06-21 16:22:03,932 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 520 transitions, 7231 flow [2024-06-21 16:22:03,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:22:03,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:22:03,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:22:03,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-21 16:22:03,932 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:22:03,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:22:03,933 INFO L85 PathProgramCache]: Analyzing trace with hash 164965663, now seen corresponding path program 7 times [2024-06-21 16:22:03,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:22:03,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709520899] [2024-06-21 16:22:03,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:22:03,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:22:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:22:04,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:22:04,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:22:04,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709520899] [2024-06-21 16:22:04,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709520899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:22:04,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:22:04,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:22:04,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820963924] [2024-06-21 16:22:04,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:22:04,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:22:04,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:22:04,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:22:04,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:22:04,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:22:04,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 520 transitions, 7231 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:22:04,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:22:04,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:22:04,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:22:05,371 INFO L124 PetriNetUnfolderBase]: 1017/1900 cut-off events. [2024-06-21 16:22:05,371 INFO L125 PetriNetUnfolderBase]: For 500147/500147 co-relation queries the response was YES. [2024-06-21 16:22:05,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18678 conditions, 1900 events. 1017/1900 cut-off events. For 500147/500147 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 11927 event pairs, 47 based on Foata normal form. 2/1900 useless extension candidates. Maximal degree in co-relation 18464. Up to 1674 conditions per place. [2024-06-21 16:22:05,401 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 511 selfloop transitions, 35 changer transitions 0/549 dead transitions. [2024-06-21 16:22:05,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 549 transitions, 8517 flow [2024-06-21 16:22:05,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:22:05,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:22:05,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-21 16:22:05,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-21 16:22:05,409 INFO L175 Difference]: Start difference. First operand has 489 places, 520 transitions, 7231 flow. Second operand 11 states and 138 transitions. [2024-06-21 16:22:05,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 549 transitions, 8517 flow [2024-06-21 16:22:07,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 549 transitions, 8082 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 16:22:07,029 INFO L231 Difference]: Finished difference. Result has 492 places, 530 transitions, 7046 flow [2024-06-21 16:22:07,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6810, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7046, PETRI_PLACES=492, PETRI_TRANSITIONS=530} [2024-06-21 16:22:07,030 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 461 predicate places. [2024-06-21 16:22:07,030 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 530 transitions, 7046 flow [2024-06-21 16:22:07,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:22:07,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:22:07,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:22:07,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-21 16:22:07,031 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:22:07,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:22:07,031 INFO L85 PathProgramCache]: Analyzing trace with hash -318507267, now seen corresponding path program 8 times [2024-06-21 16:22:07,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:22:07,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915093454] [2024-06-21 16:22:07,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:22:07,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:22:07,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:22:08,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:22:08,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:22:08,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915093454] [2024-06-21 16:22:08,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915093454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:22:08,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:22:08,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:22:08,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735112651] [2024-06-21 16:22:08,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:22:08,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:22:08,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:22:08,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:22:08,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:22:08,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:22:08,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 530 transitions, 7046 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:22:08,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:22:08,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:22:08,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:22:08,912 INFO L124 PetriNetUnfolderBase]: 1028/1922 cut-off events. [2024-06-21 16:22:08,913 INFO L125 PetriNetUnfolderBase]: For 508266/508266 co-relation queries the response was YES. [2024-06-21 16:22:08,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18585 conditions, 1922 events. 1028/1922 cut-off events. For 508266/508266 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 12132 event pairs, 41 based on Foata normal form. 2/1922 useless extension candidates. Maximal degree in co-relation 18367. Up to 1692 conditions per place. [2024-06-21 16:22:08,942 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 515 selfloop transitions, 36 changer transitions 0/554 dead transitions. [2024-06-21 16:22:08,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 554 transitions, 8297 flow [2024-06-21 16:22:08,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:22:08,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:22:08,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-21 16:22:08,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-21 16:22:08,943 INFO L175 Difference]: Start difference. First operand has 492 places, 530 transitions, 7046 flow. Second operand 11 states and 138 transitions. [2024-06-21 16:22:08,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 554 transitions, 8297 flow [2024-06-21 16:22:10,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 554 transitions, 8204 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-21 16:22:10,667 INFO L231 Difference]: Finished difference. Result has 499 places, 536 transitions, 7151 flow [2024-06-21 16:22:10,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6956, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7151, PETRI_PLACES=499, PETRI_TRANSITIONS=536} [2024-06-21 16:22:10,667 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 468 predicate places. [2024-06-21 16:22:10,667 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 536 transitions, 7151 flow [2024-06-21 16:22:10,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:22:10,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:22:10,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:22:10,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-21 16:22:10,668 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:22:10,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:22:10,668 INFO L85 PathProgramCache]: Analyzing trace with hash 563753789, now seen corresponding path program 9 times [2024-06-21 16:22:10,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:22:10,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530621707] [2024-06-21 16:22:10,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:22:10,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:22:10,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:22:11,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:22:11,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:22:11,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530621707] [2024-06-21 16:22:11,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530621707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:22:11,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:22:11,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:22:11,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300958802] [2024-06-21 16:22:11,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:22:11,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:22:11,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:22:11,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:22:11,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:22:11,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:22:11,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 536 transitions, 7151 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:22:11,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:22:11,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:22:11,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:22:12,346 INFO L124 PetriNetUnfolderBase]: 1035/1936 cut-off events. [2024-06-21 16:22:12,347 INFO L125 PetriNetUnfolderBase]: For 508696/508696 co-relation queries the response was YES. [2024-06-21 16:22:12,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18690 conditions, 1936 events. 1035/1936 cut-off events. For 508696/508696 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 12271 event pairs, 41 based on Foata normal form. 2/1936 useless extension candidates. Maximal degree in co-relation 18470. Up to 1705 conditions per place. [2024-06-21 16:22:12,374 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 515 selfloop transitions, 41 changer transitions 0/559 dead transitions. [2024-06-21 16:22:12,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 559 transitions, 8383 flow [2024-06-21 16:22:12,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:22:12,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:22:12,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-21 16:22:12,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-21 16:22:12,375 INFO L175 Difference]: Start difference. First operand has 499 places, 536 transitions, 7151 flow. Second operand 11 states and 138 transitions. [2024-06-21 16:22:12,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 559 transitions, 8383 flow [2024-06-21 16:22:14,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 559 transitions, 8285 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-21 16:22:14,207 INFO L231 Difference]: Finished difference. Result has 505 places, 539 transitions, 7216 flow [2024-06-21 16:22:14,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7053, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7216, PETRI_PLACES=505, PETRI_TRANSITIONS=539} [2024-06-21 16:22:14,208 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 474 predicate places. [2024-06-21 16:22:14,208 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 539 transitions, 7216 flow [2024-06-21 16:22:14,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:22:14,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:22:14,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:22:14,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-21 16:22:14,209 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:22:14,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:22:14,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1192105085, now seen corresponding path program 10 times [2024-06-21 16:22:14,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:22:14,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140358180] [2024-06-21 16:22:14,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:22:14,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:22:14,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:22:14,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:22:14,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:22:14,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140358180] [2024-06-21 16:22:14,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140358180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:22:14,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:22:14,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:22:14,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356428353] [2024-06-21 16:22:14,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:22:14,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:22:14,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:22:14,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:22:14,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:22:15,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:22:15,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 539 transitions, 7216 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:22:15,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:22:15,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:22:15,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:22:15,712 INFO L124 PetriNetUnfolderBase]: 1045/1954 cut-off events. [2024-06-21 16:22:15,713 INFO L125 PetriNetUnfolderBase]: For 515797/515797 co-relation queries the response was YES. [2024-06-21 16:22:15,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18874 conditions, 1954 events. 1045/1954 cut-off events. For 515797/515797 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 12398 event pairs, 46 based on Foata normal form. 2/1952 useless extension candidates. Maximal degree in co-relation 18654. Up to 1746 conditions per place. [2024-06-21 16:22:15,744 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 527 selfloop transitions, 32 changer transitions 0/562 dead transitions. [2024-06-21 16:22:15,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 562 transitions, 8492 flow [2024-06-21 16:22:15,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:22:15,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:22:15,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-21 16:22:15,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-21 16:22:15,746 INFO L175 Difference]: Start difference. First operand has 505 places, 539 transitions, 7216 flow. Second operand 11 states and 135 transitions. [2024-06-21 16:22:15,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 562 transitions, 8492 flow [2024-06-21 16:22:17,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 562 transitions, 8365 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-21 16:22:17,551 INFO L231 Difference]: Finished difference. Result has 511 places, 544 transitions, 7283 flow [2024-06-21 16:22:17,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7089, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7283, PETRI_PLACES=511, PETRI_TRANSITIONS=544} [2024-06-21 16:22:17,552 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 480 predicate places. [2024-06-21 16:22:17,552 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 544 transitions, 7283 flow [2024-06-21 16:22:17,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:22:17,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:22:17,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:22:17,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-21 16:22:17,553 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:22:17,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:22:17,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1065366463, now seen corresponding path program 11 times [2024-06-21 16:22:17,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:22:17,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380312236] [2024-06-21 16:22:17,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:22:17,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:22:17,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:22:18,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:22:18,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:22:18,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380312236] [2024-06-21 16:22:18,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380312236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:22:18,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:22:18,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:22:18,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088746657] [2024-06-21 16:22:18,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:22:18,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:22:18,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:22:18,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:22:18,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:22:18,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:22:18,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 544 transitions, 7283 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:22:18,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:22:18,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:22:18,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:22:19,076 INFO L124 PetriNetUnfolderBase]: 1049/1962 cut-off events. [2024-06-21 16:22:19,076 INFO L125 PetriNetUnfolderBase]: For 522583/522583 co-relation queries the response was YES. [2024-06-21 16:22:19,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18940 conditions, 1962 events. 1049/1962 cut-off events. For 522583/522583 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 12441 event pairs, 46 based on Foata normal form. 2/1960 useless extension candidates. Maximal degree in co-relation 18717. Up to 1754 conditions per place. [2024-06-21 16:22:19,112 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 531 selfloop transitions, 30 changer transitions 0/564 dead transitions. [2024-06-21 16:22:19,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 564 transitions, 8526 flow [2024-06-21 16:22:19,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:22:19,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:22:19,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-21 16:22:19,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-21 16:22:19,114 INFO L175 Difference]: Start difference. First operand has 511 places, 544 transitions, 7283 flow. Second operand 11 states and 135 transitions. [2024-06-21 16:22:19,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 564 transitions, 8526 flow [2024-06-21 16:22:21,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 564 transitions, 8426 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-21 16:22:21,086 INFO L231 Difference]: Finished difference. Result has 517 places, 547 transitions, 7331 flow [2024-06-21 16:22:21,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7183, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7331, PETRI_PLACES=517, PETRI_TRANSITIONS=547} [2024-06-21 16:22:21,086 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 486 predicate places. [2024-06-21 16:22:21,086 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 547 transitions, 7331 flow [2024-06-21 16:22:21,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:22:21,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:22:21,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:22:21,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-21 16:22:21,087 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:22:21,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:22:21,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1536710879, now seen corresponding path program 12 times [2024-06-21 16:22:21,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:22:21,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589580813] [2024-06-21 16:22:21,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:22:21,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:22:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:22:21,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:22:21,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:22:21,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589580813] [2024-06-21 16:22:21,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589580813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:22:21,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:22:21,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:22:21,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973472093] [2024-06-21 16:22:21,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:22:21,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:22:21,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:22:21,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:22:21,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:22:21,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:22:21,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 547 transitions, 7331 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:22:21,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:22:21,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:22:21,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:22:22,628 INFO L124 PetriNetUnfolderBase]: 1053/1972 cut-off events. [2024-06-21 16:22:22,629 INFO L125 PetriNetUnfolderBase]: For 529404/529404 co-relation queries the response was YES. [2024-06-21 16:22:22,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19047 conditions, 1972 events. 1053/1972 cut-off events. For 529404/529404 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 12548 event pairs, 38 based on Foata normal form. 2/1972 useless extension candidates. Maximal degree in co-relation 18821. Up to 1739 conditions per place. [2024-06-21 16:22:22,662 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 527 selfloop transitions, 35 changer transitions 0/565 dead transitions. [2024-06-21 16:22:22,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 565 transitions, 8547 flow [2024-06-21 16:22:22,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:22:22,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:22:22,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-21 16:22:22,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-21 16:22:22,663 INFO L175 Difference]: Start difference. First operand has 517 places, 547 transitions, 7331 flow. Second operand 11 states and 138 transitions. [2024-06-21 16:22:22,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 565 transitions, 8547 flow [2024-06-21 16:22:24,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 565 transitions, 8375 flow, removed 34 selfloop flow, removed 12 redundant places. [2024-06-21 16:22:24,865 INFO L231 Difference]: Finished difference. Result has 516 places, 548 transitions, 7281 flow [2024-06-21 16:22:24,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7159, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7281, PETRI_PLACES=516, PETRI_TRANSITIONS=548} [2024-06-21 16:22:24,865 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 485 predicate places. [2024-06-21 16:22:24,865 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 548 transitions, 7281 flow [2024-06-21 16:22:24,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:22:24,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:22:24,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:22:24,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-21 16:22:24,866 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:22:24,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:22:24,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1652002049, now seen corresponding path program 13 times [2024-06-21 16:22:24,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:22:24,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994758145] [2024-06-21 16:22:24,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:22:24,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:22:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:22:25,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:22:25,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:22:25,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994758145] [2024-06-21 16:22:25,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994758145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:22:25,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:22:25,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:22:25,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317268031] [2024-06-21 16:22:25,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:22:25,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:22:25,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:22:25,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:22:25,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:22:25,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:22:25,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 548 transitions, 7281 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:22:25,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:22:25,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:22:25,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:22:26,370 INFO L124 PetriNetUnfolderBase]: 1050/1967 cut-off events. [2024-06-21 16:22:26,371 INFO L125 PetriNetUnfolderBase]: For 511552/511552 co-relation queries the response was YES. [2024-06-21 16:22:26,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18541 conditions, 1967 events. 1050/1967 cut-off events. For 511552/511552 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 12536 event pairs, 36 based on Foata normal form. 2/1967 useless extension candidates. Maximal degree in co-relation 18319. Up to 1757 conditions per place. [2024-06-21 16:22:26,402 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 533 selfloop transitions, 29 changer transitions 0/565 dead transitions. [2024-06-21 16:22:26,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 565 transitions, 8464 flow [2024-06-21 16:22:26,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:22:26,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:22:26,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-21 16:22:26,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-21 16:22:26,403 INFO L175 Difference]: Start difference. First operand has 516 places, 548 transitions, 7281 flow. Second operand 11 states and 135 transitions. [2024-06-21 16:22:26,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 565 transitions, 8464 flow [2024-06-21 16:22:28,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 565 transitions, 8306 flow, removed 30 selfloop flow, removed 12 redundant places. [2024-06-21 16:22:28,307 INFO L231 Difference]: Finished difference. Result has 515 places, 549 transitions, 7202 flow [2024-06-21 16:22:28,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7123, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7202, PETRI_PLACES=515, PETRI_TRANSITIONS=549} [2024-06-21 16:22:28,308 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 484 predicate places. [2024-06-21 16:22:28,308 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 549 transitions, 7202 flow [2024-06-21 16:22:28,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2024-06-21 16:22:28,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:22:28,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:22:28,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-21 16:22:28,308 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:22:28,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:22:28,309 INFO L85 PathProgramCache]: Analyzing trace with hash -341169747, now seen corresponding path program 32 times [2024-06-21 16:22:28,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:22:28,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324417147] [2024-06-21 16:22:28,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:22:28,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:22:28,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:22:29,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:22:29,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:22:29,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324417147] [2024-06-21 16:22:29,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324417147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:22:29,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:22:29,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:22:29,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238314096] [2024-06-21 16:22:29,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:22:29,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:22:29,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:22:29,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:22:29,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:22:29,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:22:29,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 549 transitions, 7202 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:22:29,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:22:29,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:22:29,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:22:30,204 INFO L124 PetriNetUnfolderBase]: 1076/2015 cut-off events. [2024-06-21 16:22:30,204 INFO L125 PetriNetUnfolderBase]: For 525737/525737 co-relation queries the response was YES. [2024-06-21 16:22:30,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18936 conditions, 2015 events. 1076/2015 cut-off events. For 525737/525737 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 12852 event pairs, 51 based on Foata normal form. 2/2015 useless extension candidates. Maximal degree in co-relation 18717. Up to 1677 conditions per place. [2024-06-21 16:22:30,236 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 510 selfloop transitions, 77 changer transitions 0/590 dead transitions. [2024-06-21 16:22:30,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 590 transitions, 9691 flow [2024-06-21 16:22:30,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:22:30,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:22:30,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 161 transitions. [2024-06-21 16:22:30,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4192708333333333 [2024-06-21 16:22:30,238 INFO L175 Difference]: Start difference. First operand has 515 places, 549 transitions, 7202 flow. Second operand 12 states and 161 transitions. [2024-06-21 16:22:30,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 590 transitions, 9691 flow [2024-06-21 16:22:32,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 590 transitions, 9432 flow, removed 51 selfloop flow, removed 14 redundant places. [2024-06-21 16:22:32,059 INFO L231 Difference]: Finished difference. Result has 516 places, 564 transitions, 7428 flow [2024-06-21 16:22:32,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6945, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7428, PETRI_PLACES=516, PETRI_TRANSITIONS=564} [2024-06-21 16:22:32,060 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 485 predicate places. [2024-06-21 16:22:32,060 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 564 transitions, 7428 flow [2024-06-21 16:22:32,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:22:32,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:22:32,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:22:32,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-21 16:22:32,061 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:22:32,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:22:32,061 INFO L85 PathProgramCache]: Analyzing trace with hash 76885379, now seen corresponding path program 33 times [2024-06-21 16:22:32,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:22:32,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463901265] [2024-06-21 16:22:32,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:22:32,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:22:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:22:32,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:22:32,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:22:32,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463901265] [2024-06-21 16:22:32,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463901265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:22:32,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:22:32,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:22:32,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094224233] [2024-06-21 16:22:32,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:22:32,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:22:32,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:22:32,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:22:32,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:22:33,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:22:33,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 564 transitions, 7428 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:22:33,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:22:33,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:22:33,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:22:33,823 INFO L124 PetriNetUnfolderBase]: 1072/2008 cut-off events. [2024-06-21 16:22:33,823 INFO L125 PetriNetUnfolderBase]: For 507998/507998 co-relation queries the response was YES. [2024-06-21 16:22:33,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18594 conditions, 2008 events. 1072/2008 cut-off events. For 507998/507998 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 12815 event pairs, 50 based on Foata normal form. 2/2008 useless extension candidates. Maximal degree in co-relation 18375. Up to 1729 conditions per place. [2024-06-21 16:22:33,854 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 522 selfloop transitions, 58 changer transitions 0/583 dead transitions. [2024-06-21 16:22:33,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 583 transitions, 8966 flow [2024-06-21 16:22:33,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:22:33,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:22:33,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-21 16:22:33,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-21 16:22:33,855 INFO L175 Difference]: Start difference. First operand has 516 places, 564 transitions, 7428 flow. Second operand 12 states and 152 transitions. [2024-06-21 16:22:33,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 583 transitions, 8966 flow [2024-06-21 16:22:35,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 583 transitions, 8693 flow, removed 82 selfloop flow, removed 8 redundant places. [2024-06-21 16:22:35,623 INFO L231 Difference]: Finished difference. Result has 520 places, 564 transitions, 7279 flow [2024-06-21 16:22:35,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7155, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7279, PETRI_PLACES=520, PETRI_TRANSITIONS=564} [2024-06-21 16:22:35,623 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 489 predicate places. [2024-06-21 16:22:35,623 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 564 transitions, 7279 flow [2024-06-21 16:22:35,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:22:35,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:22:35,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:22:35,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-21 16:22:35,624 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:22:35,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:22:35,624 INFO L85 PathProgramCache]: Analyzing trace with hash -496257311, now seen corresponding path program 1 times [2024-06-21 16:22:35,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:22:35,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576172025] [2024-06-21 16:22:35,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:22:35,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:22:35,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:22:36,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:22:36,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:22:36,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576172025] [2024-06-21 16:22:36,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576172025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:22:36,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:22:36,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:22:36,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219292007] [2024-06-21 16:22:36,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:22:36,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:22:36,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:22:36,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:22:36,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:22:36,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:22:36,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 564 transitions, 7279 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:22:36,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:22:36,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:22:36,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:22:37,472 INFO L124 PetriNetUnfolderBase]: 1076/2016 cut-off events. [2024-06-21 16:22:37,473 INFO L125 PetriNetUnfolderBase]: For 516927/516927 co-relation queries the response was YES. [2024-06-21 16:22:37,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18509 conditions, 2016 events. 1076/2016 cut-off events. For 516927/516927 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 12920 event pairs, 43 based on Foata normal form. 2/2016 useless extension candidates. Maximal degree in co-relation 18292. Up to 1719 conditions per place. [2024-06-21 16:22:37,504 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 529 selfloop transitions, 53 changer transitions 0/585 dead transitions. [2024-06-21 16:22:37,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 585 transitions, 8527 flow [2024-06-21 16:22:37,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:22:37,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:22:37,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-21 16:22:37,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-21 16:22:37,506 INFO L175 Difference]: Start difference. First operand has 520 places, 564 transitions, 7279 flow. Second operand 11 states and 137 transitions. [2024-06-21 16:22:37,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 585 transitions, 8527 flow [2024-06-21 16:22:39,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 585 transitions, 8359 flow, removed 17 selfloop flow, removed 12 redundant places. [2024-06-21 16:22:39,292 INFO L231 Difference]: Finished difference. Result has 519 places, 565 transitions, 7261 flow [2024-06-21 16:22:39,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7111, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7261, PETRI_PLACES=519, PETRI_TRANSITIONS=565} [2024-06-21 16:22:39,293 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 488 predicate places. [2024-06-21 16:22:39,293 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 565 transitions, 7261 flow [2024-06-21 16:22:39,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:22:39,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:22:39,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:22:39,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-21 16:22:39,294 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:22:39,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:22:39,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1567286219, now seen corresponding path program 2 times [2024-06-21 16:22:39,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:22:39,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440208739] [2024-06-21 16:22:39,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:22:39,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:22:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:22:40,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:22:40,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:22:40,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440208739] [2024-06-21 16:22:40,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440208739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:22:40,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:22:40,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:22:40,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626730580] [2024-06-21 16:22:40,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:22:40,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:22:40,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:22:40,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:22:40,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:22:40,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:22:40,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 565 transitions, 7261 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:22:40,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:22:40,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:22:40,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:22:41,096 INFO L124 PetriNetUnfolderBase]: 1080/2024 cut-off events. [2024-06-21 16:22:41,097 INFO L125 PetriNetUnfolderBase]: For 523455/523455 co-relation queries the response was YES. [2024-06-21 16:22:41,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18577 conditions, 2024 events. 1080/2024 cut-off events. For 523455/523455 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 12982 event pairs, 46 based on Foata normal form. 2/2024 useless extension candidates. Maximal degree in co-relation 18362. Up to 1764 conditions per place. [2024-06-21 16:22:41,130 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 532 selfloop transitions, 50 changer transitions 0/585 dead transitions. [2024-06-21 16:22:41,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 585 transitions, 8509 flow [2024-06-21 16:22:41,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:22:41,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:22:41,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-21 16:22:41,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-21 16:22:41,131 INFO L175 Difference]: Start difference. First operand has 519 places, 565 transitions, 7261 flow. Second operand 11 states and 137 transitions. [2024-06-21 16:22:41,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 585 transitions, 8509 flow [2024-06-21 16:22:43,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 585 transitions, 8377 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-21 16:22:43,066 INFO L231 Difference]: Finished difference. Result has 521 places, 566 transitions, 7271 flow [2024-06-21 16:22:43,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7129, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7271, PETRI_PLACES=521, PETRI_TRANSITIONS=566} [2024-06-21 16:22:43,067 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 490 predicate places. [2024-06-21 16:22:43,067 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 566 transitions, 7271 flow [2024-06-21 16:22:43,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:22:43,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:22:43,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:22:43,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-21 16:22:43,068 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:22:43,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:22:43,068 INFO L85 PathProgramCache]: Analyzing trace with hash -584823071, now seen corresponding path program 3 times [2024-06-21 16:22:43,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:22:43,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747691399] [2024-06-21 16:22:43,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:22:43,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:22:43,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:22:44,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:22:44,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:22:44,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747691399] [2024-06-21 16:22:44,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747691399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:22:44,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:22:44,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:22:44,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090539740] [2024-06-21 16:22:44,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:22:44,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:22:44,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:22:44,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:22:44,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:22:44,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:22:44,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 566 transitions, 7271 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:22:44,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:22:44,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:22:44,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:22:44,912 INFO L124 PetriNetUnfolderBase]: 1093/2051 cut-off events. [2024-06-21 16:22:44,912 INFO L125 PetriNetUnfolderBase]: For 531808/531808 co-relation queries the response was YES. [2024-06-21 16:22:44,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18705 conditions, 2051 events. 1093/2051 cut-off events. For 531808/531808 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 13242 event pairs, 57 based on Foata normal form. 2/2048 useless extension candidates. Maximal degree in co-relation 18489. Up to 1803 conditions per place. [2024-06-21 16:22:44,943 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 552 selfloop transitions, 32 changer transitions 0/587 dead transitions. [2024-06-21 16:22:44,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 587 transitions, 8533 flow [2024-06-21 16:22:44,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:22:44,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:22:44,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-21 16:22:44,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-21 16:22:44,944 INFO L175 Difference]: Start difference. First operand has 521 places, 566 transitions, 7271 flow. Second operand 12 states and 145 transitions. [2024-06-21 16:22:44,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 587 transitions, 8533 flow [2024-06-21 16:22:46,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 587 transitions, 8401 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-21 16:22:46,715 INFO L231 Difference]: Finished difference. Result has 526 places, 569 transitions, 7263 flow [2024-06-21 16:22:46,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7139, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7263, PETRI_PLACES=526, PETRI_TRANSITIONS=569} [2024-06-21 16:22:46,715 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 495 predicate places. [2024-06-21 16:22:46,715 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 569 transitions, 7263 flow [2024-06-21 16:22:46,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:22:46,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:22:46,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:22:46,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-21 16:22:46,716 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:22:46,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:22:46,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1217050467, now seen corresponding path program 4 times [2024-06-21 16:22:46,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:22:46,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554820695] [2024-06-21 16:22:46,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:22:46,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:22:46,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:22:47,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:22:47,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:22:47,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554820695] [2024-06-21 16:22:47,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554820695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:22:47,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:22:47,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:22:47,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768557767] [2024-06-21 16:22:47,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:22:47,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:22:47,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:22:47,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:22:47,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:22:47,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:22:47,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 569 transitions, 7263 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:22:47,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:22:47,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:22:47,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:22:48,686 INFO L124 PetriNetUnfolderBase]: 1100/2064 cut-off events. [2024-06-21 16:22:48,686 INFO L125 PetriNetUnfolderBase]: For 538495/538495 co-relation queries the response was YES. [2024-06-21 16:22:48,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18806 conditions, 2064 events. 1100/2064 cut-off events. For 538495/538495 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 13338 event pairs, 57 based on Foata normal form. 2/2061 useless extension candidates. Maximal degree in co-relation 18587. Up to 1847 conditions per place. [2024-06-21 16:22:48,718 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 552 selfloop transitions, 31 changer transitions 0/586 dead transitions. [2024-06-21 16:22:48,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 586 transitions, 8535 flow [2024-06-21 16:22:48,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:22:48,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:22:48,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-21 16:22:48,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-21 16:22:48,719 INFO L175 Difference]: Start difference. First operand has 526 places, 569 transitions, 7263 flow. Second operand 12 states and 142 transitions. [2024-06-21 16:22:48,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 586 transitions, 8535 flow [2024-06-21 16:22:50,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 586 transitions, 8441 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-21 16:22:50,615 INFO L231 Difference]: Finished difference. Result has 531 places, 572 transitions, 7314 flow [2024-06-21 16:22:50,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7169, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=538, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7314, PETRI_PLACES=531, PETRI_TRANSITIONS=572} [2024-06-21 16:22:50,615 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 500 predicate places. [2024-06-21 16:22:50,615 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 572 transitions, 7314 flow [2024-06-21 16:22:50,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:22:50,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:22:50,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:22:50,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-21 16:22:50,616 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:22:50,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:22:50,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1062384671, now seen corresponding path program 5 times [2024-06-21 16:22:50,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:22:50,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891439278] [2024-06-21 16:22:50,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:22:50,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:22:50,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:22:51,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:22:51,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:22:51,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891439278] [2024-06-21 16:22:51,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891439278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:22:51,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:22:51,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:22:51,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777980674] [2024-06-21 16:22:51,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:22:51,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:22:51,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:22:51,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:22:51,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:22:51,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:22:51,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 572 transitions, 7314 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:22:51,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:22:51,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:22:51,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:22:52,475 INFO L124 PetriNetUnfolderBase]: 1104/2070 cut-off events. [2024-06-21 16:22:52,475 INFO L125 PetriNetUnfolderBase]: For 545298/545298 co-relation queries the response was YES. [2024-06-21 16:22:52,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18893 conditions, 2070 events. 1104/2070 cut-off events. For 545298/545298 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 13385 event pairs, 60 based on Foata normal form. 2/2068 useless extension candidates. Maximal degree in co-relation 18672. Up to 1802 conditions per place. [2024-06-21 16:22:52,506 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 541 selfloop transitions, 47 changer transitions 0/591 dead transitions. [2024-06-21 16:22:52,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 591 transitions, 8576 flow [2024-06-21 16:22:52,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:22:52,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:22:52,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-21 16:22:52,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-21 16:22:52,507 INFO L175 Difference]: Start difference. First operand has 531 places, 572 transitions, 7314 flow. Second operand 11 states and 134 transitions. [2024-06-21 16:22:52,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 591 transitions, 8576 flow [2024-06-21 16:22:54,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 591 transitions, 8481 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-21 16:22:54,674 INFO L231 Difference]: Finished difference. Result has 533 places, 573 transitions, 7364 flow [2024-06-21 16:22:54,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7219, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7364, PETRI_PLACES=533, PETRI_TRANSITIONS=573} [2024-06-21 16:22:54,676 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 502 predicate places. [2024-06-21 16:22:54,677 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 573 transitions, 7364 flow [2024-06-21 16:22:54,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:22:54,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:22:54,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:22:54,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-21 16:22:54,677 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:22:54,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:22:54,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1211688087, now seen corresponding path program 6 times [2024-06-21 16:22:54,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:22:54,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806358136] [2024-06-21 16:22:54,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:22:54,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:22:54,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:22:55,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:22:55,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:22:55,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806358136] [2024-06-21 16:22:55,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806358136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:22:55,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:22:55,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:22:55,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836256086] [2024-06-21 16:22:55,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:22:55,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:22:55,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:22:55,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:22:55,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:22:55,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:22:55,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 573 transitions, 7364 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:22:55,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:22:55,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:22:55,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:22:56,668 INFO L124 PetriNetUnfolderBase]: 1108/2078 cut-off events. [2024-06-21 16:22:56,668 INFO L125 PetriNetUnfolderBase]: For 552341/552341 co-relation queries the response was YES. [2024-06-21 16:22:56,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19018 conditions, 2078 events. 1108/2078 cut-off events. For 552341/552341 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 13428 event pairs, 64 based on Foata normal form. 2/2076 useless extension candidates. Maximal degree in co-relation 18796. Up to 1826 conditions per place. [2024-06-21 16:22:56,697 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 542 selfloop transitions, 46 changer transitions 0/591 dead transitions. [2024-06-21 16:22:56,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 591 transitions, 8626 flow [2024-06-21 16:22:56,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:22:56,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:22:56,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-21 16:22:56,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-21 16:22:56,698 INFO L175 Difference]: Start difference. First operand has 533 places, 573 transitions, 7364 flow. Second operand 11 states and 136 transitions. [2024-06-21 16:22:56,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 591 transitions, 8626 flow [2024-06-21 16:22:58,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 591 transitions, 8497 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-21 16:22:58,633 INFO L231 Difference]: Finished difference. Result has 535 places, 574 transitions, 7377 flow [2024-06-21 16:22:58,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7235, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=527, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7377, PETRI_PLACES=535, PETRI_TRANSITIONS=574} [2024-06-21 16:22:58,634 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 504 predicate places. [2024-06-21 16:22:58,634 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 574 transitions, 7377 flow [2024-06-21 16:22:58,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:22:58,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:22:58,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:22:58,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-21 16:22:58,634 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:22:58,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:22:58,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1211472606, now seen corresponding path program 1 times [2024-06-21 16:22:58,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:22:58,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759942754] [2024-06-21 16:22:58,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:22:58,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:22:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:22:59,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:22:59,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:22:59,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759942754] [2024-06-21 16:22:59,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759942754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:22:59,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:22:59,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:22:59,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656373457] [2024-06-21 16:22:59,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:22:59,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:22:59,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:22:59,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:22:59,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:22:59,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:22:59,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 574 transitions, 7377 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:22:59,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:22:59,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:22:59,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:23:00,780 INFO L124 PetriNetUnfolderBase]: 1124/2114 cut-off events. [2024-06-21 16:23:00,780 INFO L125 PetriNetUnfolderBase]: For 661413/661413 co-relation queries the response was YES. [2024-06-21 16:23:00,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19232 conditions, 2114 events. 1124/2114 cut-off events. For 661413/661413 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 13738 event pairs, 68 based on Foata normal form. 10/2120 useless extension candidates. Maximal degree in co-relation 19009. Up to 1819 conditions per place. [2024-06-21 16:23:00,811 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 540 selfloop transitions, 49 changer transitions 4/596 dead transitions. [2024-06-21 16:23:00,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 596 transitions, 8697 flow [2024-06-21 16:23:00,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:23:00,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:23:00,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-21 16:23:00,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-21 16:23:00,812 INFO L175 Difference]: Start difference. First operand has 535 places, 574 transitions, 7377 flow. Second operand 12 states and 151 transitions. [2024-06-21 16:23:00,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 596 transitions, 8697 flow [2024-06-21 16:23:02,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 596 transitions, 8565 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-21 16:23:02,843 INFO L231 Difference]: Finished difference. Result has 538 places, 574 transitions, 7362 flow [2024-06-21 16:23:02,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7245, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7362, PETRI_PLACES=538, PETRI_TRANSITIONS=574} [2024-06-21 16:23:02,844 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 507 predicate places. [2024-06-21 16:23:02,844 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 574 transitions, 7362 flow [2024-06-21 16:23:02,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:23:02,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:23:02,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:23:02,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-21 16:23:02,845 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:23:02,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:23:02,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1211480325, now seen corresponding path program 1 times [2024-06-21 16:23:02,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:23:02,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651815170] [2024-06-21 16:23:02,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:23:02,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:23:02,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:23:04,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:23:04,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:23:04,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651815170] [2024-06-21 16:23:04,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651815170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:23:04,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:23:04,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:23:04,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033879993] [2024-06-21 16:23:04,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:23:04,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:23:04,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:23:04,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:23:04,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:23:04,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:23:04,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 574 transitions, 7362 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:23:04,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:23:04,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:23:04,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:23:05,533 INFO L124 PetriNetUnfolderBase]: 1121/2109 cut-off events. [2024-06-21 16:23:05,534 INFO L125 PetriNetUnfolderBase]: For 552502/552502 co-relation queries the response was YES. [2024-06-21 16:23:05,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19216 conditions, 2109 events. 1121/2109 cut-off events. For 552502/552502 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 13700 event pairs, 68 based on Foata normal form. 1/2106 useless extension candidates. Maximal degree in co-relation 18992. Up to 1846 conditions per place. [2024-06-21 16:23:05,570 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 537 selfloop transitions, 53 changer transitions 0/593 dead transitions. [2024-06-21 16:23:05,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 593 transitions, 8640 flow [2024-06-21 16:23:05,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:23:05,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:23:05,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-21 16:23:05,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-21 16:23:05,571 INFO L175 Difference]: Start difference. First operand has 538 places, 574 transitions, 7362 flow. Second operand 12 states and 147 transitions. [2024-06-21 16:23:05,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 593 transitions, 8640 flow [2024-06-21 16:23:07,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 593 transitions, 8518 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-21 16:23:07,974 INFO L231 Difference]: Finished difference. Result has 540 places, 576 transitions, 7411 flow [2024-06-21 16:23:07,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7240, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7411, PETRI_PLACES=540, PETRI_TRANSITIONS=576} [2024-06-21 16:23:07,975 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 509 predicate places. [2024-06-21 16:23:07,975 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 576 transitions, 7411 flow [2024-06-21 16:23:07,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:23:07,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:23:07,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:23:07,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-21 16:23:07,976 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:23:07,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:23:07,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1290661965, now seen corresponding path program 2 times [2024-06-21 16:23:07,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:23:07,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281219315] [2024-06-21 16:23:07,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:23:07,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:23:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:23:09,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:23:09,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:23:09,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281219315] [2024-06-21 16:23:09,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281219315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:23:09,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:23:09,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:23:09,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585782196] [2024-06-21 16:23:09,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:23:09,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:23:09,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:23:09,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:23:09,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:23:09,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:23:09,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 576 transitions, 7411 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:23:09,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:23:09,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:23:09,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:23:10,706 INFO L124 PetriNetUnfolderBase]: 1119/2106 cut-off events. [2024-06-21 16:23:10,707 INFO L125 PetriNetUnfolderBase]: For 545367/545367 co-relation queries the response was YES. [2024-06-21 16:23:10,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19038 conditions, 2106 events. 1119/2106 cut-off events. For 545367/545367 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 13689 event pairs, 68 based on Foata normal form. 1/2103 useless extension candidates. Maximal degree in co-relation 18813. Up to 1843 conditions per place. [2024-06-21 16:23:10,740 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 538 selfloop transitions, 52 changer transitions 0/593 dead transitions. [2024-06-21 16:23:10,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 593 transitions, 8633 flow [2024-06-21 16:23:10,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:23:10,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:23:10,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-21 16:23:10,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-21 16:23:10,742 INFO L175 Difference]: Start difference. First operand has 540 places, 576 transitions, 7411 flow. Second operand 12 states and 148 transitions. [2024-06-21 16:23:10,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 593 transitions, 8633 flow [2024-06-21 16:23:12,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 593 transitions, 8447 flow, removed 40 selfloop flow, removed 10 redundant places. [2024-06-21 16:23:12,844 INFO L231 Difference]: Finished difference. Result has 542 places, 576 transitions, 7334 flow [2024-06-21 16:23:12,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7225, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7334, PETRI_PLACES=542, PETRI_TRANSITIONS=576} [2024-06-21 16:23:12,845 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 511 predicate places. [2024-06-21 16:23:12,845 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 576 transitions, 7334 flow [2024-06-21 16:23:12,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:23:12,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:23:12,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:23:12,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-21 16:23:12,845 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:23:12,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:23:12,846 INFO L85 PathProgramCache]: Analyzing trace with hash -177902819, now seen corresponding path program 7 times [2024-06-21 16:23:12,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:23:12,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420656286] [2024-06-21 16:23:12,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:23:12,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:23:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:23:13,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:23:13,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:23:13,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420656286] [2024-06-21 16:23:13,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420656286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:23:13,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:23:13,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:23:13,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364124396] [2024-06-21 16:23:13,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:23:13,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:23:13,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:23:13,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:23:13,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:23:13,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:23:13,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 576 transitions, 7334 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:23:13,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:23:13,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:23:13,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:23:14,770 INFO L124 PetriNetUnfolderBase]: 1123/2114 cut-off events. [2024-06-21 16:23:14,770 INFO L125 PetriNetUnfolderBase]: For 565758/565758 co-relation queries the response was YES. [2024-06-21 16:23:14,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19101 conditions, 2114 events. 1123/2114 cut-off events. For 565758/565758 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 13750 event pairs, 68 based on Foata normal form. 2/2112 useless extension candidates. Maximal degree in co-relation 18875. Up to 1818 conditions per place. [2024-06-21 16:23:14,805 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 530 selfloop transitions, 59 changer transitions 0/592 dead transitions. [2024-06-21 16:23:14,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 592 transitions, 8594 flow [2024-06-21 16:23:14,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:23:14,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:23:14,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-21 16:23:14,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-21 16:23:14,806 INFO L175 Difference]: Start difference. First operand has 542 places, 576 transitions, 7334 flow. Second operand 11 states and 136 transitions. [2024-06-21 16:23:14,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 592 transitions, 8594 flow [2024-06-21 16:23:17,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 592 transitions, 8464 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-21 16:23:17,051 INFO L231 Difference]: Finished difference. Result has 542 places, 577 transitions, 7374 flow [2024-06-21 16:23:17,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7204, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7374, PETRI_PLACES=542, PETRI_TRANSITIONS=577} [2024-06-21 16:23:17,052 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 511 predicate places. [2024-06-21 16:23:17,052 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 577 transitions, 7374 flow [2024-06-21 16:23:17,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:23:17,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:23:17,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:23:17,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-21 16:23:17,053 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:23:17,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:23:17,053 INFO L85 PathProgramCache]: Analyzing trace with hash -371842229, now seen corresponding path program 8 times [2024-06-21 16:23:17,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:23:17,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760857121] [2024-06-21 16:23:17,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:23:17,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:23:17,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:23:17,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:23:17,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:23:17,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760857121] [2024-06-21 16:23:17,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760857121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:23:17,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:23:17,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:23:17,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28131551] [2024-06-21 16:23:17,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:23:17,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:23:17,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:23:17,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:23:17,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:23:18,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:23:18,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 577 transitions, 7374 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:23:18,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:23:18,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:23:18,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:23:18,830 INFO L124 PetriNetUnfolderBase]: 1127/2122 cut-off events. [2024-06-21 16:23:18,830 INFO L125 PetriNetUnfolderBase]: For 573529/573529 co-relation queries the response was YES. [2024-06-21 16:23:18,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19249 conditions, 2122 events. 1127/2122 cut-off events. For 573529/573529 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 13823 event pairs, 68 based on Foata normal form. 2/2120 useless extension candidates. Maximal degree in co-relation 19022. Up to 1859 conditions per place. [2024-06-21 16:23:18,865 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 541 selfloop transitions, 49 changer transitions 0/593 dead transitions. [2024-06-21 16:23:18,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 593 transitions, 8638 flow [2024-06-21 16:23:18,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:23:18,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:23:18,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-21 16:23:18,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-21 16:23:18,866 INFO L175 Difference]: Start difference. First operand has 542 places, 577 transitions, 7374 flow. Second operand 11 states and 136 transitions. [2024-06-21 16:23:18,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 593 transitions, 8638 flow [2024-06-21 16:23:21,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 593 transitions, 8478 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-21 16:23:21,169 INFO L231 Difference]: Finished difference. Result has 544 places, 578 transitions, 7366 flow [2024-06-21 16:23:21,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7214, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7366, PETRI_PLACES=544, PETRI_TRANSITIONS=578} [2024-06-21 16:23:21,170 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 513 predicate places. [2024-06-21 16:23:21,170 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 578 transitions, 7366 flow [2024-06-21 16:23:21,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:23:21,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:23:21,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:23:21,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-21 16:23:21,170 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:23:21,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:23:21,171 INFO L85 PathProgramCache]: Analyzing trace with hash -377204609, now seen corresponding path program 9 times [2024-06-21 16:23:21,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:23:21,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141900299] [2024-06-21 16:23:21,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:23:21,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:23:21,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:23:22,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:23:22,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:23:22,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141900299] [2024-06-21 16:23:22,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141900299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:23:22,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:23:22,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:23:22,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046746070] [2024-06-21 16:23:22,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:23:22,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:23:22,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:23:22,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:23:22,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:23:22,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:23:22,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 578 transitions, 7366 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:23:22,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:23:22,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:23:22,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:23:23,377 INFO L124 PetriNetUnfolderBase]: 1131/2130 cut-off events. [2024-06-21 16:23:23,377 INFO L125 PetriNetUnfolderBase]: For 580210/580210 co-relation queries the response was YES. [2024-06-21 16:23:23,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19304 conditions, 2130 events. 1131/2130 cut-off events. For 580210/580210 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 13865 event pairs, 70 based on Foata normal form. 2/2128 useless extension candidates. Maximal degree in co-relation 19076. Up to 1875 conditions per place. [2024-06-21 16:23:23,414 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 545 selfloop transitions, 47 changer transitions 0/595 dead transitions. [2024-06-21 16:23:23,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 595 transitions, 8651 flow [2024-06-21 16:23:23,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:23:23,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:23:23,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-21 16:23:23,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-21 16:23:23,415 INFO L175 Difference]: Start difference. First operand has 544 places, 578 transitions, 7366 flow. Second operand 11 states and 134 transitions. [2024-06-21 16:23:23,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 595 transitions, 8651 flow [2024-06-21 16:23:25,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 595 transitions, 8507 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-21 16:23:25,763 INFO L231 Difference]: Finished difference. Result has 547 places, 580 transitions, 7393 flow [2024-06-21 16:23:25,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7224, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7393, PETRI_PLACES=547, PETRI_TRANSITIONS=580} [2024-06-21 16:23:25,763 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 516 predicate places. [2024-06-21 16:23:25,763 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 580 transitions, 7393 flow [2024-06-21 16:23:25,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:23:25,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:23:25,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:23:25,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-21 16:23:25,764 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:23:25,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:23:25,765 INFO L85 PathProgramCache]: Analyzing trace with hash 175398671, now seen corresponding path program 10 times [2024-06-21 16:23:25,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:23:25,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948294586] [2024-06-21 16:23:25,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:23:25,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:23:25,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:23:26,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:23:26,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:23:26,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948294586] [2024-06-21 16:23:26,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948294586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:23:26,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:23:26,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:23:26,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621470082] [2024-06-21 16:23:26,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:23:26,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:23:26,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:23:26,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:23:26,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:23:27,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:23:27,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 580 transitions, 7393 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:23:27,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:23:27,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:23:27,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:23:27,772 INFO L124 PetriNetUnfolderBase]: 1135/2138 cut-off events. [2024-06-21 16:23:27,773 INFO L125 PetriNetUnfolderBase]: For 587259/587259 co-relation queries the response was YES. [2024-06-21 16:23:27,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19382 conditions, 2138 events. 1135/2138 cut-off events. For 587259/587259 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 13942 event pairs, 68 based on Foata normal form. 2/2136 useless extension candidates. Maximal degree in co-relation 19152. Up to 1878 conditions per place. [2024-06-21 16:23:27,807 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 548 selfloop transitions, 46 changer transitions 0/597 dead transitions. [2024-06-21 16:23:27,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 597 transitions, 8671 flow [2024-06-21 16:23:27,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:23:27,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:23:27,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-21 16:23:27,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-21 16:23:27,808 INFO L175 Difference]: Start difference. First operand has 547 places, 580 transitions, 7393 flow. Second operand 11 states and 134 transitions. [2024-06-21 16:23:27,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 597 transitions, 8671 flow [2024-06-21 16:23:30,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 597 transitions, 8535 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-21 16:23:30,266 INFO L231 Difference]: Finished difference. Result has 550 places, 581 transitions, 7407 flow [2024-06-21 16:23:30,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7257, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7407, PETRI_PLACES=550, PETRI_TRANSITIONS=581} [2024-06-21 16:23:30,267 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 519 predicate places. [2024-06-21 16:23:30,267 INFO L495 AbstractCegarLoop]: Abstraction has has 550 places, 581 transitions, 7407 flow [2024-06-21 16:23:30,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:23:30,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:23:30,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:23:30,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-21 16:23:30,267 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:23:30,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:23:30,268 INFO L85 PathProgramCache]: Analyzing trace with hash 382205933, now seen corresponding path program 3 times [2024-06-21 16:23:30,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:23:30,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125117721] [2024-06-21 16:23:30,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:23:30,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:23:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:23:32,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:23:32,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:23:32,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125117721] [2024-06-21 16:23:32,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125117721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:23:32,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:23:32,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:23:32,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295524433] [2024-06-21 16:23:32,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:23:32,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:23:32,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:23:32,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:23:32,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:23:32,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:23:32,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 581 transitions, 7407 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:23:32,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:23:32,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:23:32,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:23:33,327 INFO L124 PetriNetUnfolderBase]: 1133/2135 cut-off events. [2024-06-21 16:23:33,328 INFO L125 PetriNetUnfolderBase]: For 564193/564193 co-relation queries the response was YES. [2024-06-21 16:23:33,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19141 conditions, 2135 events. 1133/2135 cut-off events. For 564193/564193 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 13946 event pairs, 70 based on Foata normal form. 1/2132 useless extension candidates. Maximal degree in co-relation 18910. Up to 1798 conditions per place. [2024-06-21 16:23:33,363 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 512 selfloop transitions, 81 changer transitions 0/596 dead transitions. [2024-06-21 16:23:33,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 596 transitions, 8629 flow [2024-06-21 16:23:33,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:23:33,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:23:33,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-21 16:23:33,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-21 16:23:33,364 INFO L175 Difference]: Start difference. First operand has 550 places, 581 transitions, 7407 flow. Second operand 12 states and 148 transitions. [2024-06-21 16:23:33,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 561 places, 596 transitions, 8629 flow [2024-06-21 16:23:35,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 596 transitions, 8489 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-21 16:23:35,625 INFO L231 Difference]: Finished difference. Result has 553 places, 581 transitions, 7434 flow [2024-06-21 16:23:35,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7267, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7434, PETRI_PLACES=553, PETRI_TRANSITIONS=581} [2024-06-21 16:23:35,626 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 522 predicate places. [2024-06-21 16:23:35,626 INFO L495 AbstractCegarLoop]: Abstraction has has 553 places, 581 transitions, 7434 flow [2024-06-21 16:23:35,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:23:35,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:23:35,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:23:35,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-21 16:23:35,627 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:23:35,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:23:35,627 INFO L85 PathProgramCache]: Analyzing trace with hash -371836277, now seen corresponding path program 4 times [2024-06-21 16:23:35,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:23:35,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048667866] [2024-06-21 16:23:35,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:23:35,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:23:35,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:23:37,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:23:37,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:23:37,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048667866] [2024-06-21 16:23:37,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048667866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:23:37,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:23:37,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:23:37,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791091969] [2024-06-21 16:23:37,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:23:37,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:23:37,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:23:37,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:23:37,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:23:37,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:23:37,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 581 transitions, 7434 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:23:37,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:23:37,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:23:37,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:23:38,149 INFO L124 PetriNetUnfolderBase]: 1136/2140 cut-off events. [2024-06-21 16:23:38,149 INFO L125 PetriNetUnfolderBase]: For 569983/569983 co-relation queries the response was YES. [2024-06-21 16:23:38,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19217 conditions, 2140 events. 1136/2140 cut-off events. For 569983/569983 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 13944 event pairs, 70 based on Foata normal form. 1/2137 useless extension candidates. Maximal degree in co-relation 18985. Up to 1855 conditions per place. [2024-06-21 16:23:38,184 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 536 selfloop transitions, 60 changer transitions 0/599 dead transitions. [2024-06-21 16:23:38,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 599 transitions, 9079 flow [2024-06-21 16:23:38,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:23:38,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:23:38,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-21 16:23:38,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-21 16:23:38,186 INFO L175 Difference]: Start difference. First operand has 553 places, 581 transitions, 7434 flow. Second operand 11 states and 142 transitions. [2024-06-21 16:23:38,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 599 transitions, 9079 flow [2024-06-21 16:23:40,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 599 transitions, 8874 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-21 16:23:40,413 INFO L231 Difference]: Finished difference. Result has 554 places, 583 transitions, 7415 flow [2024-06-21 16:23:40,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7231, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7415, PETRI_PLACES=554, PETRI_TRANSITIONS=583} [2024-06-21 16:23:40,414 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 523 predicate places. [2024-06-21 16:23:40,414 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 583 transitions, 7415 flow [2024-06-21 16:23:40,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:23:40,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:23:40,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:23:40,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-21 16:23:40,415 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:23:40,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:23:40,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1725295182, now seen corresponding path program 2 times [2024-06-21 16:23:40,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:23:40,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820710853] [2024-06-21 16:23:40,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:23:40,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:23:40,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:23:41,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:23:41,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:23:41,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820710853] [2024-06-21 16:23:41,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820710853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:23:41,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:23:41,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:23:41,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580407599] [2024-06-21 16:23:41,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:23:41,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:23:41,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:23:41,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:23:41,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:23:41,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:23:41,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 583 transitions, 7415 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:23:41,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:23:41,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:23:41,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:23:42,511 INFO L124 PetriNetUnfolderBase]: 1152/2176 cut-off events. [2024-06-21 16:23:42,511 INFO L125 PetriNetUnfolderBase]: For 705907/705907 co-relation queries the response was YES. [2024-06-21 16:23:42,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19415 conditions, 2176 events. 1152/2176 cut-off events. For 705907/705907 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 14245 event pairs, 74 based on Foata normal form. 10/2182 useless extension candidates. Maximal degree in co-relation 19182. Up to 1872 conditions per place. [2024-06-21 16:23:42,551 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 544 selfloop transitions, 53 changer transitions 4/604 dead transitions. [2024-06-21 16:23:42,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 604 transitions, 8762 flow [2024-06-21 16:23:42,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:23:42,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:23:42,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-21 16:23:42,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-21 16:23:42,553 INFO L175 Difference]: Start difference. First operand has 554 places, 583 transitions, 7415 flow. Second operand 12 states and 151 transitions. [2024-06-21 16:23:42,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 604 transitions, 8762 flow [2024-06-21 16:23:45,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 604 transitions, 8601 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-21 16:23:45,127 INFO L231 Difference]: Finished difference. Result has 558 places, 584 transitions, 7402 flow [2024-06-21 16:23:45,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7254, PETRI_DIFFERENCE_MINUEND_PLACES=545, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7402, PETRI_PLACES=558, PETRI_TRANSITIONS=584} [2024-06-21 16:23:45,128 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 527 predicate places. [2024-06-21 16:23:45,128 INFO L495 AbstractCegarLoop]: Abstraction has has 558 places, 584 transitions, 7402 flow [2024-06-21 16:23:45,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:23:45,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:23:45,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:23:45,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-21 16:23:45,129 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:23:45,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:23:45,129 INFO L85 PathProgramCache]: Analyzing trace with hash -198386775, now seen corresponding path program 5 times [2024-06-21 16:23:45,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:23:45,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655422142] [2024-06-21 16:23:45,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:23:45,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:23:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:23:46,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:23:46,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:23:46,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655422142] [2024-06-21 16:23:46,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655422142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:23:46,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:23:46,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:23:46,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870276719] [2024-06-21 16:23:46,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:23:46,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:23:46,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:23:46,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:23:46,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:23:46,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:23:46,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 558 places, 584 transitions, 7402 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:23:46,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:23:46,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:23:46,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:23:47,712 INFO L124 PetriNetUnfolderBase]: 1144/2163 cut-off events. [2024-06-21 16:23:47,713 INFO L125 PetriNetUnfolderBase]: For 562262/562262 co-relation queries the response was YES. [2024-06-21 16:23:47,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19121 conditions, 2163 events. 1144/2163 cut-off events. For 562262/562262 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 14164 event pairs, 74 based on Foata normal form. 1/2160 useless extension candidates. Maximal degree in co-relation 18887. Up to 1891 conditions per place. [2024-06-21 16:23:47,749 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 539 selfloop transitions, 57 changer transitions 0/599 dead transitions. [2024-06-21 16:23:47,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 599 transitions, 8630 flow [2024-06-21 16:23:47,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:23:47,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:23:47,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-21 16:23:47,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-21 16:23:47,751 INFO L175 Difference]: Start difference. First operand has 558 places, 584 transitions, 7402 flow. Second operand 12 states and 147 transitions. [2024-06-21 16:23:47,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 599 transitions, 8630 flow [2024-06-21 16:23:50,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 599 transitions, 8468 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-21 16:23:50,295 INFO L231 Difference]: Finished difference. Result has 561 places, 584 transitions, 7359 flow [2024-06-21 16:23:50,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7240, PETRI_DIFFERENCE_MINUEND_PLACES=549, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=527, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7359, PETRI_PLACES=561, PETRI_TRANSITIONS=584} [2024-06-21 16:23:50,296 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 530 predicate places. [2024-06-21 16:23:50,296 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 584 transitions, 7359 flow [2024-06-21 16:23:50,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:23:50,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:23:50,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:23:50,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-21 16:23:50,297 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:23:50,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:23:50,297 INFO L85 PathProgramCache]: Analyzing trace with hash 2710194, now seen corresponding path program 3 times [2024-06-21 16:23:50,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:23:50,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049303889] [2024-06-21 16:23:50,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:23:50,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:23:50,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:23:51,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:23:51,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:23:51,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049303889] [2024-06-21 16:23:51,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049303889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:23:51,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:23:51,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:23:51,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89824197] [2024-06-21 16:23:51,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:23:51,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:23:51,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:23:51,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:23:51,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:23:51,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:23:51,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 584 transitions, 7359 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:23:51,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:23:51,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:23:51,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:23:52,049 INFO L124 PetriNetUnfolderBase]: 1148/2171 cut-off events. [2024-06-21 16:23:52,050 INFO L125 PetriNetUnfolderBase]: For 583175/583175 co-relation queries the response was YES. [2024-06-21 16:23:52,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19162 conditions, 2171 events. 1148/2171 cut-off events. For 583175/583175 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 14233 event pairs, 76 based on Foata normal form. 2/2169 useless extension candidates. Maximal degree in co-relation 18927. Up to 1838 conditions per place. [2024-06-21 16:23:52,086 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 525 selfloop transitions, 72 changer transitions 0/600 dead transitions. [2024-06-21 16:23:52,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 600 transitions, 8617 flow [2024-06-21 16:23:52,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:23:52,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:23:52,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-21 16:23:52,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-21 16:23:52,087 INFO L175 Difference]: Start difference. First operand has 561 places, 584 transitions, 7359 flow. Second operand 11 states and 140 transitions. [2024-06-21 16:23:52,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 600 transitions, 8617 flow [2024-06-21 16:23:54,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 600 transitions, 8484 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-21 16:23:54,295 INFO L231 Difference]: Finished difference. Result has 561 places, 585 transitions, 7404 flow [2024-06-21 16:23:54,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7226, PETRI_DIFFERENCE_MINUEND_PLACES=550, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7404, PETRI_PLACES=561, PETRI_TRANSITIONS=585} [2024-06-21 16:23:54,296 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 530 predicate places. [2024-06-21 16:23:54,296 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 585 transitions, 7404 flow [2024-06-21 16:23:54,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:23:54,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:23:54,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:23:54,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-21 16:23:54,297 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:23:54,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:23:54,297 INFO L85 PathProgramCache]: Analyzing trace with hash 2709915, now seen corresponding path program 6 times [2024-06-21 16:23:54,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:23:54,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615538749] [2024-06-21 16:23:54,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:23:54,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:23:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:23:55,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:23:55,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:23:55,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615538749] [2024-06-21 16:23:55,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615538749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:23:55,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:23:55,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:23:55,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151392345] [2024-06-21 16:23:55,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:23:55,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:23:55,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:23:55,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:23:55,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:23:55,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:23:55,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 585 transitions, 7404 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:23:55,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:23:55,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:23:55,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:23:56,080 INFO L124 PetriNetUnfolderBase]: 1146/2168 cut-off events. [2024-06-21 16:23:56,080 INFO L125 PetriNetUnfolderBase]: For 559776/559776 co-relation queries the response was YES. [2024-06-21 16:23:56,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19027 conditions, 2168 events. 1146/2168 cut-off events. For 559776/559776 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 14200 event pairs, 74 based on Foata normal form. 1/2165 useless extension candidates. Maximal degree in co-relation 18791. Up to 1778 conditions per place. [2024-06-21 16:23:56,116 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 501 selfloop transitions, 96 changer transitions 0/600 dead transitions. [2024-06-21 16:23:56,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 600 transitions, 8982 flow [2024-06-21 16:23:56,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:23:56,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:23:56,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 16:23:56,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 16:23:56,117 INFO L175 Difference]: Start difference. First operand has 561 places, 585 transitions, 7404 flow. Second operand 11 states and 143 transitions. [2024-06-21 16:23:56,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 600 transitions, 8982 flow [2024-06-21 16:23:58,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 600 transitions, 8776 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-21 16:23:58,350 INFO L231 Difference]: Finished difference. Result has 563 places, 585 transitions, 7398 flow [2024-06-21 16:23:58,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7198, PETRI_DIFFERENCE_MINUEND_PLACES=552, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7398, PETRI_PLACES=563, PETRI_TRANSITIONS=585} [2024-06-21 16:23:58,351 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 532 predicate places. [2024-06-21 16:23:58,351 INFO L495 AbstractCegarLoop]: Abstraction has has 563 places, 585 transitions, 7398 flow [2024-06-21 16:23:58,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:23:58,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:23:58,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:23:58,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-21 16:23:58,351 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:23:58,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:23:58,352 INFO L85 PathProgramCache]: Analyzing trace with hash -4439646, now seen corresponding path program 4 times [2024-06-21 16:23:58,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:23:58,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495855464] [2024-06-21 16:23:58,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:23:58,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:23:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:23:59,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:23:59,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:23:59,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495855464] [2024-06-21 16:23:59,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495855464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:23:59,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:23:59,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:23:59,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556916616] [2024-06-21 16:23:59,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:23:59,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:23:59,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:23:59,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:23:59,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:23:59,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:23:59,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 563 places, 585 transitions, 7398 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:23:59,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:23:59,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:23:59,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:24:00,819 INFO L124 PetriNetUnfolderBase]: 1150/2178 cut-off events. [2024-06-21 16:24:00,819 INFO L125 PetriNetUnfolderBase]: For 581079/581079 co-relation queries the response was YES. [2024-06-21 16:24:00,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19105 conditions, 2178 events. 1150/2178 cut-off events. For 581079/581079 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 14312 event pairs, 71 based on Foata normal form. 2/2178 useless extension candidates. Maximal degree in co-relation 18868. Up to 1808 conditions per place. [2024-06-21 16:24:00,857 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 515 selfloop transitions, 84 changer transitions 0/602 dead transitions. [2024-06-21 16:24:00,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 602 transitions, 8664 flow [2024-06-21 16:24:00,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:24:00,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:24:00,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-21 16:24:00,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-21 16:24:00,859 INFO L175 Difference]: Start difference. First operand has 563 places, 585 transitions, 7398 flow. Second operand 12 states and 149 transitions. [2024-06-21 16:24:00,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 602 transitions, 8664 flow [2024-06-21 16:24:03,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 602 transitions, 8326 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-21 16:24:03,211 INFO L231 Difference]: Finished difference. Result has 563 places, 586 transitions, 7264 flow [2024-06-21 16:24:03,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7060, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7264, PETRI_PLACES=563, PETRI_TRANSITIONS=586} [2024-06-21 16:24:03,212 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 532 predicate places. [2024-06-21 16:24:03,212 INFO L495 AbstractCegarLoop]: Abstraction has has 563 places, 586 transitions, 7264 flow [2024-06-21 16:24:03,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:24:03,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:24:03,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:24:03,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-21 16:24:03,213 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:24:03,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:24:03,213 INFO L85 PathProgramCache]: Analyzing trace with hash -170268728, now seen corresponding path program 5 times [2024-06-21 16:24:03,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:24:03,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457544799] [2024-06-21 16:24:03,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:24:03,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:24:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:24:04,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:24:04,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:24:04,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457544799] [2024-06-21 16:24:04,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457544799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:24:04,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:24:04,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:24:04,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800296316] [2024-06-21 16:24:04,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:24:04,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:24:04,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:24:04,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:24:04,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:24:04,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:24:04,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 563 places, 586 transitions, 7264 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:24:04,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:24:04,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:24:04,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:24:05,427 INFO L124 PetriNetUnfolderBase]: 1176/2230 cut-off events. [2024-06-21 16:24:05,427 INFO L125 PetriNetUnfolderBase]: For 699934/699934 co-relation queries the response was YES. [2024-06-21 16:24:05,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20719 conditions, 2230 events. 1176/2230 cut-off events. For 699934/699934 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 14635 event pairs, 92 based on Foata normal form. 2/2228 useless extension candidates. Maximal degree in co-relation 20481. Up to 1771 conditions per place. [2024-06-21 16:24:05,480 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 529 selfloop transitions, 75 changer transitions 1/608 dead transitions. [2024-06-21 16:24:05,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 608 transitions, 8994 flow [2024-06-21 16:24:05,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:24:05,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:24:05,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-21 16:24:05,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-21 16:24:05,497 INFO L175 Difference]: Start difference. First operand has 563 places, 586 transitions, 7264 flow. Second operand 11 states and 145 transitions. [2024-06-21 16:24:05,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 608 transitions, 8994 flow [2024-06-21 16:24:07,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 608 transitions, 8683 flow, removed 26 selfloop flow, removed 13 redundant places. [2024-06-21 16:24:07,825 INFO L231 Difference]: Finished difference. Result has 561 places, 587 transitions, 7141 flow [2024-06-21 16:24:07,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6953, PETRI_DIFFERENCE_MINUEND_PLACES=550, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=586, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7141, PETRI_PLACES=561, PETRI_TRANSITIONS=587} [2024-06-21 16:24:07,826 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 530 predicate places. [2024-06-21 16:24:07,826 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 587 transitions, 7141 flow [2024-06-21 16:24:07,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:24:07,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:24:07,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:24:07,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-21 16:24:07,826 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:24:07,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:24:07,827 INFO L85 PathProgramCache]: Analyzing trace with hash 548101975, now seen corresponding path program 7 times [2024-06-21 16:24:07,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:24:07,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890132584] [2024-06-21 16:24:07,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:24:07,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:24:07,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:24:09,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:24:09,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:24:09,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890132584] [2024-06-21 16:24:09,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890132584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:24:09,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:24:09,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:24:09,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932112490] [2024-06-21 16:24:09,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:24:09,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:24:09,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:24:09,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:24:09,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:24:09,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:24:09,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 587 transitions, 7141 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:24:09,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:24:09,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:24:09,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:24:10,446 INFO L124 PetriNetUnfolderBase]: 1179/2235 cut-off events. [2024-06-21 16:24:10,446 INFO L125 PetriNetUnfolderBase]: For 692189/692189 co-relation queries the response was YES. [2024-06-21 16:24:10,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20522 conditions, 2235 events. 1179/2235 cut-off events. For 692189/692189 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 14642 event pairs, 94 based on Foata normal form. 1/2232 useless extension candidates. Maximal degree in co-relation 20288. Up to 1898 conditions per place. [2024-06-21 16:24:10,482 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 524 selfloop transitions, 77 changer transitions 0/604 dead transitions. [2024-06-21 16:24:10,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 572 places, 604 transitions, 8433 flow [2024-06-21 16:24:10,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:24:10,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:24:10,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-21 16:24:10,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-21 16:24:10,484 INFO L175 Difference]: Start difference. First operand has 561 places, 587 transitions, 7141 flow. Second operand 12 states and 149 transitions. [2024-06-21 16:24:10,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 572 places, 604 transitions, 8433 flow [2024-06-21 16:24:12,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 604 transitions, 8253 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-21 16:24:12,919 INFO L231 Difference]: Finished difference. Result has 564 places, 589 transitions, 7178 flow [2024-06-21 16:24:12,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6961, PETRI_DIFFERENCE_MINUEND_PLACES=552, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7178, PETRI_PLACES=564, PETRI_TRANSITIONS=589} [2024-06-21 16:24:12,920 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 533 predicate places. [2024-06-21 16:24:12,920 INFO L495 AbstractCegarLoop]: Abstraction has has 564 places, 589 transitions, 7178 flow [2024-06-21 16:24:12,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:24:12,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:24:12,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:24:12,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-21 16:24:12,920 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:24:12,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:24:12,936 INFO L85 PathProgramCache]: Analyzing trace with hash 375056093, now seen corresponding path program 8 times [2024-06-21 16:24:12,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:24:12,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637645165] [2024-06-21 16:24:12,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:24:12,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:24:12,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:24:14,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:24:14,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:24:14,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637645165] [2024-06-21 16:24:14,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637645165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:24:14,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:24:14,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:24:14,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485891101] [2024-06-21 16:24:14,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:24:14,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:24:14,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:24:14,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:24:14,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:24:14,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:24:14,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 589 transitions, 7178 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:24:14,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:24:14,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:24:14,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:24:15,080 INFO L124 PetriNetUnfolderBase]: 1155/2186 cut-off events. [2024-06-21 16:24:15,080 INFO L125 PetriNetUnfolderBase]: For 561385/561385 co-relation queries the response was YES. [2024-06-21 16:24:15,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18665 conditions, 2186 events. 1155/2186 cut-off events. For 561385/561385 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 14347 event pairs, 78 based on Foata normal form. 1/2183 useless extension candidates. Maximal degree in co-relation 18430. Up to 1849 conditions per place. [2024-06-21 16:24:15,117 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 525 selfloop transitions, 76 changer transitions 0/604 dead transitions. [2024-06-21 16:24:15,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 575 places, 604 transitions, 8416 flow [2024-06-21 16:24:15,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:24:15,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:24:15,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-21 16:24:15,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-21 16:24:15,118 INFO L175 Difference]: Start difference. First operand has 564 places, 589 transitions, 7178 flow. Second operand 12 states and 150 transitions. [2024-06-21 16:24:15,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 575 places, 604 transitions, 8416 flow [2024-06-21 16:24:17,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 604 transitions, 8192 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-21 16:24:17,221 INFO L231 Difference]: Finished difference. Result has 567 places, 589 transitions, 7111 flow [2024-06-21 16:24:17,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6954, PETRI_DIFFERENCE_MINUEND_PLACES=555, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7111, PETRI_PLACES=567, PETRI_TRANSITIONS=589} [2024-06-21 16:24:17,221 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 536 predicate places. [2024-06-21 16:24:17,222 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 589 transitions, 7111 flow [2024-06-21 16:24:17,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:24:17,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:24:17,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:24:17,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-21 16:24:17,222 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:24:17,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:24:17,223 INFO L85 PathProgramCache]: Analyzing trace with hash 515011421, now seen corresponding path program 11 times [2024-06-21 16:24:17,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:24:17,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504556435] [2024-06-21 16:24:17,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:24:17,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:24:17,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:24:18,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:24:18,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:24:18,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504556435] [2024-06-21 16:24:18,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504556435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:24:18,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:24:18,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:24:18,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183628860] [2024-06-21 16:24:18,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:24:18,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:24:18,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:24:18,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:24:18,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:24:18,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:24:18,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 589 transitions, 7111 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:24:18,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:24:18,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:24:18,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:24:18,979 INFO L124 PetriNetUnfolderBase]: 1159/2196 cut-off events. [2024-06-21 16:24:18,979 INFO L125 PetriNetUnfolderBase]: For 584078/584078 co-relation queries the response was YES. [2024-06-21 16:24:19,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18750 conditions, 2196 events. 1159/2196 cut-off events. For 584078/584078 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 14497 event pairs, 68 based on Foata normal form. 2/2196 useless extension candidates. Maximal degree in co-relation 18514. Up to 1824 conditions per place. [2024-06-21 16:24:19,015 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 512 selfloop transitions, 88 changer transitions 0/603 dead transitions. [2024-06-21 16:24:19,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 603 transitions, 8395 flow [2024-06-21 16:24:19,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:24:19,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:24:19,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-21 16:24:19,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-21 16:24:19,016 INFO L175 Difference]: Start difference. First operand has 567 places, 589 transitions, 7111 flow. Second operand 11 states and 136 transitions. [2024-06-21 16:24:19,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 603 transitions, 8395 flow [2024-06-21 16:24:21,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 603 transitions, 8172 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-21 16:24:21,140 INFO L231 Difference]: Finished difference. Result has 565 places, 590 transitions, 7124 flow [2024-06-21 16:24:21,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6888, PETRI_DIFFERENCE_MINUEND_PLACES=554, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7124, PETRI_PLACES=565, PETRI_TRANSITIONS=590} [2024-06-21 16:24:21,141 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 534 predicate places. [2024-06-21 16:24:21,141 INFO L495 AbstractCegarLoop]: Abstraction has has 565 places, 590 transitions, 7124 flow [2024-06-21 16:24:21,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:24:21,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:24:21,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:24:21,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-21 16:24:21,141 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:24:21,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:24:21,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1687524155, now seen corresponding path program 12 times [2024-06-21 16:24:21,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:24:21,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123694086] [2024-06-21 16:24:21,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:24:21,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:24:21,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:24:22,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:24:22,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:24:22,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123694086] [2024-06-21 16:24:22,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123694086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:24:22,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:24:22,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:24:22,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224019910] [2024-06-21 16:24:22,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:24:22,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:24:22,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:24:22,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:24:22,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:24:22,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:24:22,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 565 places, 590 transitions, 7124 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:24:22,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:24:22,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:24:22,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:24:23,064 INFO L124 PetriNetUnfolderBase]: 1163/2204 cut-off events. [2024-06-21 16:24:23,064 INFO L125 PetriNetUnfolderBase]: For 592303/592303 co-relation queries the response was YES. [2024-06-21 16:24:23,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18897 conditions, 2204 events. 1163/2204 cut-off events. For 592303/592303 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 14548 event pairs, 66 based on Foata normal form. 2/2204 useless extension candidates. Maximal degree in co-relation 18660. Up to 1890 conditions per place. [2024-06-21 16:24:23,104 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 531 selfloop transitions, 70 changer transitions 0/604 dead transitions. [2024-06-21 16:24:23,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 575 places, 604 transitions, 8412 flow [2024-06-21 16:24:23,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:24:23,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:24:23,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-21 16:24:23,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-21 16:24:23,106 INFO L175 Difference]: Start difference. First operand has 565 places, 590 transitions, 7124 flow. Second operand 11 states and 137 transitions. [2024-06-21 16:24:23,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 575 places, 604 transitions, 8412 flow [2024-06-21 16:24:25,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 604 transitions, 8186 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-21 16:24:25,696 INFO L231 Difference]: Finished difference. Result has 567 places, 591 transitions, 7101 flow [2024-06-21 16:24:25,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6898, PETRI_DIFFERENCE_MINUEND_PLACES=556, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7101, PETRI_PLACES=567, PETRI_TRANSITIONS=591} [2024-06-21 16:24:25,697 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 536 predicate places. [2024-06-21 16:24:25,697 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 591 transitions, 7101 flow [2024-06-21 16:24:25,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:24:25,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:24:25,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:24:25,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-21 16:24:25,698 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:24:25,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:24:25,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1493584745, now seen corresponding path program 13 times [2024-06-21 16:24:25,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:24:25,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797158815] [2024-06-21 16:24:25,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:24:25,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:24:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:24:26,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:24:26,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:24:26,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797158815] [2024-06-21 16:24:26,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797158815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:24:26,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:24:26,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:24:26,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021161075] [2024-06-21 16:24:26,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:24:26,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:24:26,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:24:26,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:24:26,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:24:26,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:24:26,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 591 transitions, 7101 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:24:26,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:24:26,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:24:26,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:24:27,700 INFO L124 PetriNetUnfolderBase]: 1167/2212 cut-off events. [2024-06-21 16:24:27,700 INFO L125 PetriNetUnfolderBase]: For 598795/598795 co-relation queries the response was YES. [2024-06-21 16:24:27,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18932 conditions, 2212 events. 1167/2212 cut-off events. For 598795/598795 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 14597 event pairs, 68 based on Foata normal form. 2/2212 useless extension candidates. Maximal degree in co-relation 18694. Up to 1916 conditions per place. [2024-06-21 16:24:27,741 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 539 selfloop transitions, 63 changer transitions 0/605 dead transitions. [2024-06-21 16:24:27,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 605 transitions, 8393 flow [2024-06-21 16:24:27,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:24:27,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:24:27,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-21 16:24:27,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-21 16:24:27,743 INFO L175 Difference]: Start difference. First operand has 567 places, 591 transitions, 7101 flow. Second operand 11 states and 135 transitions. [2024-06-21 16:24:27,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 605 transitions, 8393 flow [2024-06-21 16:24:29,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 605 transitions, 8202 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-21 16:24:30,004 INFO L231 Difference]: Finished difference. Result has 569 places, 592 transitions, 7101 flow [2024-06-21 16:24:30,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6910, PETRI_DIFFERENCE_MINUEND_PLACES=558, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7101, PETRI_PLACES=569, PETRI_TRANSITIONS=592} [2024-06-21 16:24:30,005 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 538 predicate places. [2024-06-21 16:24:30,005 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 592 transitions, 7101 flow [2024-06-21 16:24:30,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:24:30,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:24:30,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:24:30,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-21 16:24:30,006 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:24:30,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:24:30,006 INFO L85 PathProgramCache]: Analyzing trace with hash -904078627, now seen corresponding path program 14 times [2024-06-21 16:24:30,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:24:30,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728479827] [2024-06-21 16:24:30,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:24:30,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:24:30,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:24:31,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:24:31,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:24:31,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728479827] [2024-06-21 16:24:31,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728479827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:24:31,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:24:31,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:24:31,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754539299] [2024-06-21 16:24:31,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:24:31,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:24:31,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:24:31,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:24:31,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:24:31,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:24:31,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 592 transitions, 7101 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:24:31,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:24:31,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:24:31,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:24:31,972 INFO L124 PetriNetUnfolderBase]: 1171/2220 cut-off events. [2024-06-21 16:24:31,973 INFO L125 PetriNetUnfolderBase]: For 605516/605516 co-relation queries the response was YES. [2024-06-21 16:24:32,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18989 conditions, 2220 events. 1171/2220 cut-off events. For 605516/605516 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 14684 event pairs, 68 based on Foata normal form. 2/2220 useless extension candidates. Maximal degree in co-relation 18750. Up to 1936 conditions per place. [2024-06-21 16:24:32,010 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 546 selfloop transitions, 59 changer transitions 0/608 dead transitions. [2024-06-21 16:24:32,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 608 transitions, 8433 flow [2024-06-21 16:24:32,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:24:32,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:24:32,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-21 16:24:32,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-21 16:24:32,012 INFO L175 Difference]: Start difference. First operand has 569 places, 592 transitions, 7101 flow. Second operand 11 states and 133 transitions. [2024-06-21 16:24:32,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 608 transitions, 8433 flow [2024-06-21 16:24:34,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 570 places, 608 transitions, 8250 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-21 16:24:34,364 INFO L231 Difference]: Finished difference. Result has 572 places, 595 transitions, 7145 flow [2024-06-21 16:24:34,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6922, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7145, PETRI_PLACES=572, PETRI_TRANSITIONS=595} [2024-06-21 16:24:34,365 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 541 predicate places. [2024-06-21 16:24:34,365 INFO L495 AbstractCegarLoop]: Abstraction has has 572 places, 595 transitions, 7145 flow [2024-06-21 16:24:34,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:24:34,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:24:34,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:24:34,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-21 16:24:34,365 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:24:34,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:24:34,366 INFO L85 PathProgramCache]: Analyzing trace with hash -904226497, now seen corresponding path program 15 times [2024-06-21 16:24:34,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:24:34,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114690666] [2024-06-21 16:24:34,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:24:34,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:24:34,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:24:35,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:24:35,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:24:35,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114690666] [2024-06-21 16:24:35,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114690666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:24:35,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:24:35,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:24:35,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129383850] [2024-06-21 16:24:35,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:24:35,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:24:35,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:24:35,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:24:35,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:24:35,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:24:35,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 595 transitions, 7145 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:24:35,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:24:35,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:24:35,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:24:36,482 INFO L124 PetriNetUnfolderBase]: 1175/2228 cut-off events. [2024-06-21 16:24:36,482 INFO L125 PetriNetUnfolderBase]: For 612179/612179 co-relation queries the response was YES. [2024-06-21 16:24:36,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19063 conditions, 2228 events. 1175/2228 cut-off events. For 612179/612179 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 14744 event pairs, 68 based on Foata normal form. 2/2228 useless extension candidates. Maximal degree in co-relation 18822. Up to 1942 conditions per place. [2024-06-21 16:24:36,518 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 551 selfloop transitions, 56 changer transitions 0/610 dead transitions. [2024-06-21 16:24:36,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 610 transitions, 8453 flow [2024-06-21 16:24:36,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:24:36,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:24:36,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-21 16:24:36,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-21 16:24:36,520 INFO L175 Difference]: Start difference. First operand has 572 places, 595 transitions, 7145 flow. Second operand 11 states and 133 transitions. [2024-06-21 16:24:36,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 610 transitions, 8453 flow [2024-06-21 16:24:38,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 610 transitions, 8286 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-21 16:24:38,991 INFO L231 Difference]: Finished difference. Result has 575 places, 596 transitions, 7158 flow [2024-06-21 16:24:38,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6978, PETRI_DIFFERENCE_MINUEND_PLACES=564, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7158, PETRI_PLACES=575, PETRI_TRANSITIONS=596} [2024-06-21 16:24:38,991 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 544 predicate places. [2024-06-21 16:24:38,991 INFO L495 AbstractCegarLoop]: Abstraction has has 575 places, 596 transitions, 7158 flow [2024-06-21 16:24:38,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:24:38,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:24:38,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:24:38,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-21 16:24:38,992 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:24:38,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:24:38,992 INFO L85 PathProgramCache]: Analyzing trace with hash 234507864, now seen corresponding path program 6 times [2024-06-21 16:24:38,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:24:38,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081146251] [2024-06-21 16:24:38,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:24:38,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:24:39,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:24:39,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:24:39,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:24:39,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081146251] [2024-06-21 16:24:39,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081146251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:24:39,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:24:39,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:24:39,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602562501] [2024-06-21 16:24:39,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:24:39,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:24:39,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:24:39,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:24:39,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:24:40,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:24:40,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 596 transitions, 7158 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:24:40,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:24:40,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:24:40,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:24:40,845 INFO L124 PetriNetUnfolderBase]: 1186/2249 cut-off events. [2024-06-21 16:24:40,846 INFO L125 PetriNetUnfolderBase]: For 651753/651753 co-relation queries the response was YES. [2024-06-21 16:24:40,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19564 conditions, 2249 events. 1186/2249 cut-off events. For 651753/651753 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 14909 event pairs, 69 based on Foata normal form. 2/2249 useless extension candidates. Maximal degree in co-relation 19322. Up to 1719 conditions per place. [2024-06-21 16:24:40,888 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 479 selfloop transitions, 132 changer transitions 0/614 dead transitions. [2024-06-21 16:24:40,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 614 transitions, 8859 flow [2024-06-21 16:24:40,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:24:40,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:24:40,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-21 16:24:40,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-21 16:24:40,889 INFO L175 Difference]: Start difference. First operand has 575 places, 596 transitions, 7158 flow. Second operand 11 states and 144 transitions. [2024-06-21 16:24:40,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 585 places, 614 transitions, 8859 flow [2024-06-21 16:24:43,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 614 transitions, 8689 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-21 16:24:43,523 INFO L231 Difference]: Finished difference. Result has 577 places, 598 transitions, 7327 flow [2024-06-21 16:24:43,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6988, PETRI_DIFFERENCE_MINUEND_PLACES=566, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7327, PETRI_PLACES=577, PETRI_TRANSITIONS=598} [2024-06-21 16:24:43,523 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 546 predicate places. [2024-06-21 16:24:43,524 INFO L495 AbstractCegarLoop]: Abstraction has has 577 places, 598 transitions, 7327 flow [2024-06-21 16:24:43,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:24:43,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:24:43,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:24:43,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-21 16:24:43,524 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:24:43,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:24:43,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1687731917, now seen corresponding path program 9 times [2024-06-21 16:24:43,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:24:43,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933068217] [2024-06-21 16:24:43,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:24:43,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:24:43,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:24:45,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:24:45,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:24:45,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933068217] [2024-06-21 16:24:45,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933068217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:24:45,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:24:45,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:24:45,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442194480] [2024-06-21 16:24:45,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:24:45,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:24:45,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:24:45,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:24:45,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:24:45,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:24:45,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 577 places, 598 transitions, 7327 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:24:45,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:24:45,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:24:45,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:24:46,651 INFO L124 PetriNetUnfolderBase]: 1184/2246 cut-off events. [2024-06-21 16:24:46,651 INFO L125 PetriNetUnfolderBase]: For 623552/623552 co-relation queries the response was YES. [2024-06-21 16:24:46,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19456 conditions, 2246 events. 1184/2246 cut-off events. For 623552/623552 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 14895 event pairs, 76 based on Foata normal form. 1/2242 useless extension candidates. Maximal degree in co-relation 19213. Up to 1966 conditions per place. [2024-06-21 16:24:46,697 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 554 selfloop transitions, 60 changer transitions 0/617 dead transitions. [2024-06-21 16:24:46,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 589 places, 617 transitions, 8659 flow [2024-06-21 16:24:46,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 16:24:46,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 16:24:46,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 163 transitions. [2024-06-21 16:24:46,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3918269230769231 [2024-06-21 16:24:46,699 INFO L175 Difference]: Start difference. First operand has 577 places, 598 transitions, 7327 flow. Second operand 13 states and 163 transitions. [2024-06-21 16:24:46,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 589 places, 617 transitions, 8659 flow [2024-06-21 16:24:49,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 582 places, 617 transitions, 8436 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-21 16:24:49,461 INFO L231 Difference]: Finished difference. Result has 583 places, 598 transitions, 7234 flow [2024-06-21 16:24:49,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7109, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=538, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7234, PETRI_PLACES=583, PETRI_TRANSITIONS=598} [2024-06-21 16:24:49,462 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 552 predicate places. [2024-06-21 16:24:49,462 INFO L495 AbstractCegarLoop]: Abstraction has has 583 places, 598 transitions, 7234 flow [2024-06-21 16:24:49,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:24:49,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:24:49,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:24:49,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-21 16:24:49,462 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:24:49,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:24:49,463 INFO L85 PathProgramCache]: Analyzing trace with hash 787576144, now seen corresponding path program 7 times [2024-06-21 16:24:49,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:24:49,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594250277] [2024-06-21 16:24:49,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:24:49,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:24:49,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:24:50,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:24:50,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:24:50,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594250277] [2024-06-21 16:24:50,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594250277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:24:50,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:24:50,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:24:50,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268102400] [2024-06-21 16:24:50,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:24:50,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:24:50,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:24:50,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:24:50,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:24:51,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:24:51,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 598 transitions, 7234 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:24:51,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:24:51,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:24:51,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:24:51,919 INFO L124 PetriNetUnfolderBase]: 1224/2326 cut-off events. [2024-06-21 16:24:51,920 INFO L125 PetriNetUnfolderBase]: For 849283/849283 co-relation queries the response was YES. [2024-06-21 16:24:51,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22247 conditions, 2326 events. 1224/2326 cut-off events. For 849283/849283 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 15455 event pairs, 88 based on Foata normal form. 2/2326 useless extension candidates. Maximal degree in co-relation 22002. Up to 1508 conditions per place. [2024-06-21 16:24:51,964 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 442 selfloop transitions, 176 changer transitions 0/621 dead transitions. [2024-06-21 16:24:51,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 621 transitions, 9048 flow [2024-06-21 16:24:51,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:24:51,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:24:51,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 160 transitions. [2024-06-21 16:24:51,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-21 16:24:51,965 INFO L175 Difference]: Start difference. First operand has 583 places, 598 transitions, 7234 flow. Second operand 12 states and 160 transitions. [2024-06-21 16:24:51,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 621 transitions, 9048 flow [2024-06-21 16:24:55,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 583 places, 621 transitions, 8889 flow, removed 21 selfloop flow, removed 11 redundant places. [2024-06-21 16:24:55,261 INFO L231 Difference]: Finished difference. Result has 584 places, 600 transitions, 7505 flow [2024-06-21 16:24:55,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7075, PETRI_DIFFERENCE_MINUEND_PLACES=572, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7505, PETRI_PLACES=584, PETRI_TRANSITIONS=600} [2024-06-21 16:24:55,262 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 553 predicate places. [2024-06-21 16:24:55,262 INFO L495 AbstractCegarLoop]: Abstraction has has 584 places, 600 transitions, 7505 flow [2024-06-21 16:24:55,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:24:55,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:24:55,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:24:55,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-21 16:24:55,263 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:24:55,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:24:55,263 INFO L85 PathProgramCache]: Analyzing trace with hash 234498564, now seen corresponding path program 8 times [2024-06-21 16:24:55,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:24:55,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888607903] [2024-06-21 16:24:55,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:24:55,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:24:55,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:24:56,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:24:56,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:24:56,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888607903] [2024-06-21 16:24:56,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888607903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:24:56,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:24:56,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:24:56,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57501969] [2024-06-21 16:24:56,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:24:56,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:24:56,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:24:56,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:24:56,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:24:56,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:24:56,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 584 places, 600 transitions, 7505 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:24:56,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:24:56,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:24:56,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:24:57,481 INFO L124 PetriNetUnfolderBase]: 1231/2343 cut-off events. [2024-06-21 16:24:57,482 INFO L125 PetriNetUnfolderBase]: For 862312/862312 co-relation queries the response was YES. [2024-06-21 16:24:57,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22678 conditions, 2343 events. 1231/2343 cut-off events. For 862312/862312 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 15625 event pairs, 94 based on Foata normal form. 2/2343 useless extension candidates. Maximal degree in co-relation 22432. Up to 1777 conditions per place. [2024-06-21 16:24:57,522 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 444 selfloop transitions, 170 changer transitions 0/617 dead transitions. [2024-06-21 16:24:57,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 617 transitions, 8828 flow [2024-06-21 16:24:57,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:24:57,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:24:57,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-21 16:24:57,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-21 16:24:57,524 INFO L175 Difference]: Start difference. First operand has 584 places, 600 transitions, 7505 flow. Second operand 12 states and 153 transitions. [2024-06-21 16:24:57,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 617 transitions, 8828 flow [2024-06-21 16:25:00,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 617 transitions, 8620 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-21 16:25:00,683 INFO L231 Difference]: Finished difference. Result has 590 places, 603 transitions, 7706 flow [2024-06-21 16:25:00,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7301, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7706, PETRI_PLACES=590, PETRI_TRANSITIONS=603} [2024-06-21 16:25:00,684 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 559 predicate places. [2024-06-21 16:25:00,684 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 603 transitions, 7706 flow [2024-06-21 16:25:00,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:25:00,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:25:00,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:25:00,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-21 16:25:00,685 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:25:00,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:25:00,685 INFO L85 PathProgramCache]: Analyzing trace with hash 225561264, now seen corresponding path program 9 times [2024-06-21 16:25:00,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:25:00,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031055880] [2024-06-21 16:25:00,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:25:00,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:25:00,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:25:01,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:25:01,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:25:01,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031055880] [2024-06-21 16:25:01,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031055880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:25:01,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:25:01,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:25:01,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971428180] [2024-06-21 16:25:01,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:25:01,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:25:01,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:25:01,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:25:01,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:25:01,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:25:01,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 603 transitions, 7706 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:25:01,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:25:01,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:25:01,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:25:02,631 INFO L124 PetriNetUnfolderBase]: 1228/2338 cut-off events. [2024-06-21 16:25:02,632 INFO L125 PetriNetUnfolderBase]: For 833020/833020 co-relation queries the response was YES. [2024-06-21 16:25:02,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22498 conditions, 2338 events. 1228/2338 cut-off events. For 833020/833020 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 15564 event pairs, 96 based on Foata normal form. 2/2338 useless extension candidates. Maximal degree in co-relation 22250. Up to 1824 conditions per place. [2024-06-21 16:25:02,672 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 479 selfloop transitions, 135 changer transitions 0/617 dead transitions. [2024-06-21 16:25:02,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 617 transitions, 8979 flow [2024-06-21 16:25:02,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:25:02,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:25:02,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-21 16:25:02,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-21 16:25:02,673 INFO L175 Difference]: Start difference. First operand has 590 places, 603 transitions, 7706 flow. Second operand 11 states and 142 transitions. [2024-06-21 16:25:02,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 617 transitions, 8979 flow [2024-06-21 16:25:05,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 591 places, 617 transitions, 8588 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-21 16:25:05,562 INFO L231 Difference]: Finished difference. Result has 592 places, 603 transitions, 7593 flow [2024-06-21 16:25:05,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7317, PETRI_DIFFERENCE_MINUEND_PLACES=581, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7593, PETRI_PLACES=592, PETRI_TRANSITIONS=603} [2024-06-21 16:25:05,563 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 561 predicate places. [2024-06-21 16:25:05,563 INFO L495 AbstractCegarLoop]: Abstraction has has 592 places, 603 transitions, 7593 flow [2024-06-21 16:25:05,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:25:05,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:25:05,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:25:05,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-21 16:25:05,563 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:25:05,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:25:05,564 INFO L85 PathProgramCache]: Analyzing trace with hash 225294075, now seen corresponding path program 10 times [2024-06-21 16:25:05,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:25:05,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076703848] [2024-06-21 16:25:05,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:25:05,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:25:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:25:07,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:25:07,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:25:07,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076703848] [2024-06-21 16:25:07,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076703848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:25:07,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:25:07,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:25:07,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883894908] [2024-06-21 16:25:07,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:25:07,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:25:07,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:25:07,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:25:07,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:25:07,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:25:07,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 592 places, 603 transitions, 7593 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:25:07,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:25:07,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:25:07,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:25:08,144 INFO L124 PetriNetUnfolderBase]: 1226/2331 cut-off events. [2024-06-21 16:25:08,144 INFO L125 PetriNetUnfolderBase]: For 809797/809797 co-relation queries the response was YES. [2024-06-21 16:25:08,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22149 conditions, 2331 events. 1226/2331 cut-off events. For 809797/809797 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 15529 event pairs, 88 based on Foata normal form. 1/2330 useless extension candidates. Maximal degree in co-relation 21900. Up to 1828 conditions per place. [2024-06-21 16:25:08,189 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 459 selfloop transitions, 155 changer transitions 0/617 dead transitions. [2024-06-21 16:25:08,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 603 places, 617 transitions, 8864 flow [2024-06-21 16:25:08,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:25:08,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:25:08,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-21 16:25:08,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-21 16:25:08,190 INFO L175 Difference]: Start difference. First operand has 592 places, 603 transitions, 7593 flow. Second operand 12 states and 149 transitions. [2024-06-21 16:25:08,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 603 places, 617 transitions, 8864 flow [2024-06-21 16:25:11,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 617 transitions, 8552 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-21 16:25:11,323 INFO L231 Difference]: Finished difference. Result has 594 places, 604 transitions, 7609 flow [2024-06-21 16:25:11,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7281, PETRI_DIFFERENCE_MINUEND_PLACES=582, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7609, PETRI_PLACES=594, PETRI_TRANSITIONS=604} [2024-06-21 16:25:11,324 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 563 predicate places. [2024-06-21 16:25:11,324 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 604 transitions, 7609 flow [2024-06-21 16:25:11,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:25:11,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:25:11,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:25:11,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-21 16:25:11,324 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:25:11,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:25:11,325 INFO L85 PathProgramCache]: Analyzing trace with hash -31408245, now seen corresponding path program 11 times [2024-06-21 16:25:11,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:25:11,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597915205] [2024-06-21 16:25:11,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:25:11,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:25:11,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:25:13,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:25:13,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:25:13,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597915205] [2024-06-21 16:25:13,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597915205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:25:13,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:25:13,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:25:13,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699077239] [2024-06-21 16:25:13,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:25:13,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:25:13,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:25:13,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:25:13,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:25:13,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:25:13,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 604 transitions, 7609 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:25:13,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:25:13,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:25:13,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:25:14,608 INFO L124 PetriNetUnfolderBase]: 1229/2336 cut-off events. [2024-06-21 16:25:14,609 INFO L125 PetriNetUnfolderBase]: For 809907/809907 co-relation queries the response was YES. [2024-06-21 16:25:14,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22202 conditions, 2336 events. 1229/2336 cut-off events. For 809907/809907 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 15584 event pairs, 88 based on Foata normal form. 1/2335 useless extension candidates. Maximal degree in co-relation 21952. Up to 1833 conditions per place. [2024-06-21 16:25:14,644 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 478 selfloop transitions, 138 changer transitions 0/619 dead transitions. [2024-06-21 16:25:14,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 605 places, 619 transitions, 8925 flow [2024-06-21 16:25:14,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:25:14,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:25:14,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-21 16:25:14,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-21 16:25:14,645 INFO L175 Difference]: Start difference. First operand has 594 places, 604 transitions, 7609 flow. Second operand 12 states and 150 transitions. [2024-06-21 16:25:14,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 605 places, 619 transitions, 8925 flow [2024-06-21 16:25:17,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 619 transitions, 8686 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-21 16:25:17,671 INFO L231 Difference]: Finished difference. Result has 598 places, 606 transitions, 7709 flow [2024-06-21 16:25:17,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7370, PETRI_DIFFERENCE_MINUEND_PLACES=586, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7709, PETRI_PLACES=598, PETRI_TRANSITIONS=606} [2024-06-21 16:25:17,671 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 567 predicate places. [2024-06-21 16:25:17,671 INFO L495 AbstractCegarLoop]: Abstraction has has 598 places, 606 transitions, 7709 flow [2024-06-21 16:25:17,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:25:17,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:25:17,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:25:17,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-21 16:25:17,672 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:25:17,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:25:17,672 INFO L85 PathProgramCache]: Analyzing trace with hash -31206435, now seen corresponding path program 12 times [2024-06-21 16:25:17,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:25:17,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644599150] [2024-06-21 16:25:17,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:25:17,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:25:17,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:25:18,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:25:18,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:25:18,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644599150] [2024-06-21 16:25:18,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644599150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:25:18,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:25:18,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:25:18,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479387638] [2024-06-21 16:25:18,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:25:18,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:25:18,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:25:18,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:25:18,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:25:18,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:25:18,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 598 places, 606 transitions, 7709 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:25:18,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:25:18,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:25:18,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:25:19,662 INFO L124 PetriNetUnfolderBase]: 1227/2337 cut-off events. [2024-06-21 16:25:19,662 INFO L125 PetriNetUnfolderBase]: For 799425/799425 co-relation queries the response was YES. [2024-06-21 16:25:19,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22040 conditions, 2337 events. 1227/2337 cut-off events. For 799425/799425 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 15604 event pairs, 92 based on Foata normal form. 1/2336 useless extension candidates. Maximal degree in co-relation 21789. Up to 1830 conditions per place. [2024-06-21 16:25:19,783 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 480 selfloop transitions, 136 changer transitions 0/619 dead transitions. [2024-06-21 16:25:19,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 619 transitions, 8971 flow [2024-06-21 16:25:19,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:25:19,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:25:19,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-21 16:25:19,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-21 16:25:19,784 INFO L175 Difference]: Start difference. First operand has 598 places, 606 transitions, 7709 flow. Second operand 12 states and 151 transitions. [2024-06-21 16:25:19,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 609 places, 619 transitions, 8971 flow [2024-06-21 16:25:23,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 601 places, 619 transitions, 8672 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-21 16:25:23,023 INFO L231 Difference]: Finished difference. Result has 602 places, 606 transitions, 7687 flow [2024-06-21 16:25:23,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7410, PETRI_DIFFERENCE_MINUEND_PLACES=590, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7687, PETRI_PLACES=602, PETRI_TRANSITIONS=606} [2024-06-21 16:25:23,024 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 571 predicate places. [2024-06-21 16:25:23,024 INFO L495 AbstractCegarLoop]: Abstraction has has 602 places, 606 transitions, 7687 flow [2024-06-21 16:25:23,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:25:23,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:25:23,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:25:23,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-21 16:25:23,025 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:25:23,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:25:23,025 INFO L85 PathProgramCache]: Analyzing trace with hash -23780106, now seen corresponding path program 10 times [2024-06-21 16:25:23,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:25:23,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450341718] [2024-06-21 16:25:23,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:25:23,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:25:23,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:25:24,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:25:24,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:25:24,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450341718] [2024-06-21 16:25:24,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450341718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:25:24,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:25:24,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:25:24,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727135858] [2024-06-21 16:25:24,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:25:24,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:25:24,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:25:24,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:25:24,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:25:24,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:25:24,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 602 places, 606 transitions, 7687 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:25:24,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:25:24,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:25:24,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:25:25,262 INFO L124 PetriNetUnfolderBase]: 1238/2358 cut-off events. [2024-06-21 16:25:25,263 INFO L125 PetriNetUnfolderBase]: For 862812/862812 co-relation queries the response was YES. [2024-06-21 16:25:25,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22654 conditions, 2358 events. 1238/2358 cut-off events. For 862812/862812 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 15785 event pairs, 91 based on Foata normal form. 2/2358 useless extension candidates. Maximal degree in co-relation 22402. Up to 1905 conditions per place. [2024-06-21 16:25:25,304 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 515 selfloop transitions, 106 changer transitions 0/624 dead transitions. [2024-06-21 16:25:25,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 624 transitions, 9421 flow [2024-06-21 16:25:25,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:25:25,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:25:25,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-21 16:25:25,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-21 16:25:25,306 INFO L175 Difference]: Start difference. First operand has 602 places, 606 transitions, 7687 flow. Second operand 12 states and 153 transitions. [2024-06-21 16:25:25,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 613 places, 624 transitions, 9421 flow [2024-06-21 16:25:29,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 602 places, 624 transitions, 9074 flow, removed 24 selfloop flow, removed 11 redundant places. [2024-06-21 16:25:29,158 INFO L231 Difference]: Finished difference. Result has 603 places, 608 transitions, 7634 flow [2024-06-21 16:25:29,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7340, PETRI_DIFFERENCE_MINUEND_PLACES=591, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7634, PETRI_PLACES=603, PETRI_TRANSITIONS=608} [2024-06-21 16:25:29,159 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 572 predicate places. [2024-06-21 16:25:29,159 INFO L495 AbstractCegarLoop]: Abstraction has has 603 places, 608 transitions, 7634 flow [2024-06-21 16:25:29,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:25:29,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:25:29,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:25:29,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-21 16:25:29,160 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:25:29,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:25:29,160 INFO L85 PathProgramCache]: Analyzing trace with hash -24048876, now seen corresponding path program 11 times [2024-06-21 16:25:29,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:25:29,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428830888] [2024-06-21 16:25:29,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:25:29,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:25:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:25:30,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:25:30,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:25:30,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428830888] [2024-06-21 16:25:30,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428830888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:25:30,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:25:30,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:25:30,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234325925] [2024-06-21 16:25:30,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:25:30,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:25:30,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:25:30,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:25:30,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:25:30,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:25:30,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 608 transitions, 7634 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:25:30,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:25:30,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:25:30,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:25:31,303 INFO L124 PetriNetUnfolderBase]: 1242/2362 cut-off events. [2024-06-21 16:25:31,304 INFO L125 PetriNetUnfolderBase]: For 873253/873253 co-relation queries the response was YES. [2024-06-21 16:25:31,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22686 conditions, 2362 events. 1242/2362 cut-off events. For 873253/873253 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 15840 event pairs, 91 based on Foata normal form. 2/2362 useless extension candidates. Maximal degree in co-relation 22433. Up to 1858 conditions per place. [2024-06-21 16:25:31,347 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 499 selfloop transitions, 120 changer transitions 0/622 dead transitions. [2024-06-21 16:25:31,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 622 transitions, 8942 flow [2024-06-21 16:25:31,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:25:31,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:25:31,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-21 16:25:31,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-21 16:25:31,348 INFO L175 Difference]: Start difference. First operand has 603 places, 608 transitions, 7634 flow. Second operand 11 states and 144 transitions. [2024-06-21 16:25:31,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 613 places, 622 transitions, 8942 flow [2024-06-21 16:25:35,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 622 transitions, 8763 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-21 16:25:35,385 INFO L231 Difference]: Finished difference. Result has 608 places, 609 transitions, 7741 flow [2024-06-21 16:25:35,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7463, PETRI_DIFFERENCE_MINUEND_PLACES=597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7741, PETRI_PLACES=608, PETRI_TRANSITIONS=609} [2024-06-21 16:25:35,385 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 577 predicate places. [2024-06-21 16:25:35,385 INFO L495 AbstractCegarLoop]: Abstraction has has 608 places, 609 transitions, 7741 flow [2024-06-21 16:25:35,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:25:35,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:25:35,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:25:35,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-21 16:25:35,386 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:25:35,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:25:35,387 INFO L85 PathProgramCache]: Analyzing trace with hash -31198995, now seen corresponding path program 13 times [2024-06-21 16:25:35,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:25:35,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371399373] [2024-06-21 16:25:35,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:25:35,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:25:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:25:36,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:25:36,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:25:36,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371399373] [2024-06-21 16:25:36,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371399373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:25:36,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:25:36,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:25:36,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083205443] [2024-06-21 16:25:36,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:25:36,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:25:36,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:25:36,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:25:36,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:25:37,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:25:37,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 608 places, 609 transitions, 7741 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:25:37,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:25:37,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:25:37,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:25:38,222 INFO L124 PetriNetUnfolderBase]: 1368/2596 cut-off events. [2024-06-21 16:25:38,222 INFO L125 PetriNetUnfolderBase]: For 863973/863973 co-relation queries the response was YES. [2024-06-21 16:25:38,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24475 conditions, 2596 events. 1368/2596 cut-off events. For 863973/863973 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 17749 event pairs, 98 based on Foata normal form. 1/2591 useless extension candidates. Maximal degree in co-relation 24220. Up to 2137 conditions per place. [2024-06-21 16:25:38,268 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 587 selfloop transitions, 121 changer transitions 0/711 dead transitions. [2024-06-21 16:25:38,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 711 transitions, 10396 flow [2024-06-21 16:25:38,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-21 16:25:38,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-21 16:25:38,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 177 transitions. [2024-06-21 16:25:38,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3950892857142857 [2024-06-21 16:25:38,269 INFO L175 Difference]: Start difference. First operand has 608 places, 609 transitions, 7741 flow. Second operand 14 states and 177 transitions. [2024-06-21 16:25:38,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 621 places, 711 transitions, 10396 flow [2024-06-21 16:25:42,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 612 places, 711 transitions, 10084 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-21 16:25:42,264 INFO L231 Difference]: Finished difference. Result has 619 places, 668 transitions, 8686 flow [2024-06-21 16:25:42,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7477, PETRI_DIFFERENCE_MINUEND_PLACES=599, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8686, PETRI_PLACES=619, PETRI_TRANSITIONS=668} [2024-06-21 16:25:42,265 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 588 predicate places. [2024-06-21 16:25:42,265 INFO L495 AbstractCegarLoop]: Abstraction has has 619 places, 668 transitions, 8686 flow [2024-06-21 16:25:42,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:25:42,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:25:42,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:25:42,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-21 16:25:42,265 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:25:42,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:25:42,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1878609709, now seen corresponding path program 14 times [2024-06-21 16:25:42,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:25:42,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091987308] [2024-06-21 16:25:42,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:25:42,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:25:42,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:25:43,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:25:43,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:25:43,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091987308] [2024-06-21 16:25:43,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091987308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:25:43,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:25:43,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:25:43,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715620124] [2024-06-21 16:25:43,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:25:43,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:25:43,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:25:43,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:25:43,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:25:43,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:25:43,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 619 places, 668 transitions, 8686 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:25:43,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:25:43,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:25:43,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:25:44,842 INFO L124 PetriNetUnfolderBase]: 1366/2597 cut-off events. [2024-06-21 16:25:44,842 INFO L125 PetriNetUnfolderBase]: For 850043/850043 co-relation queries the response was YES. [2024-06-21 16:25:44,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24488 conditions, 2597 events. 1366/2597 cut-off events. For 850043/850043 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 17748 event pairs, 97 based on Foata normal form. 1/2596 useless extension candidates. Maximal degree in co-relation 24226. Up to 1968 conditions per place. [2024-06-21 16:25:44,891 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 498 selfloop transitions, 180 changer transitions 0/681 dead transitions. [2024-06-21 16:25:44,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 681 transitions, 10072 flow [2024-06-21 16:25:44,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:25:44,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:25:44,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-21 16:25:44,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-21 16:25:44,893 INFO L175 Difference]: Start difference. First operand has 619 places, 668 transitions, 8686 flow. Second operand 12 states and 152 transitions. [2024-06-21 16:25:44,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 681 transitions, 10072 flow [2024-06-21 16:25:48,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 624 places, 681 transitions, 9852 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-21 16:25:48,475 INFO L231 Difference]: Finished difference. Result has 625 places, 668 transitions, 8832 flow [2024-06-21 16:25:48,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8466, PETRI_DIFFERENCE_MINUEND_PLACES=613, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8832, PETRI_PLACES=625, PETRI_TRANSITIONS=668} [2024-06-21 16:25:48,476 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 594 predicate places. [2024-06-21 16:25:48,476 INFO L495 AbstractCegarLoop]: Abstraction has has 625 places, 668 transitions, 8832 flow [2024-06-21 16:25:48,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:25:48,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:25:48,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:25:48,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-21 16:25:48,476 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:25:48,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:25:48,477 INFO L85 PathProgramCache]: Analyzing trace with hash -31198716, now seen corresponding path program 12 times [2024-06-21 16:25:48,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:25:48,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740177899] [2024-06-21 16:25:48,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:25:48,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:25:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:25:49,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:25:49,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:25:49,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740177899] [2024-06-21 16:25:49,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740177899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:25:49,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:25:49,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:25:49,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038255705] [2024-06-21 16:25:49,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:25:49,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:25:49,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:25:49,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:25:49,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:25:49,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:25:49,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 625 places, 668 transitions, 8832 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:25:49,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:25:49,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:25:49,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:25:50,822 INFO L124 PetriNetUnfolderBase]: 1363/2592 cut-off events. [2024-06-21 16:25:50,822 INFO L125 PetriNetUnfolderBase]: For 840097/840097 co-relation queries the response was YES. [2024-06-21 16:25:50,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24207 conditions, 2592 events. 1363/2592 cut-off events. For 840097/840097 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 17734 event pairs, 99 based on Foata normal form. 2/2592 useless extension candidates. Maximal degree in co-relation 23944. Up to 2027 conditions per place. [2024-06-21 16:25:50,872 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 531 selfloop transitions, 148 changer transitions 0/682 dead transitions. [2024-06-21 16:25:50,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 636 places, 682 transitions, 10222 flow [2024-06-21 16:25:50,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:25:50,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:25:50,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-21 16:25:50,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-21 16:25:50,873 INFO L175 Difference]: Start difference. First operand has 625 places, 668 transitions, 8832 flow. Second operand 12 states and 150 transitions. [2024-06-21 16:25:50,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 636 places, 682 transitions, 10222 flow [2024-06-21 16:25:54,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 626 places, 682 transitions, 9808 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-21 16:25:54,049 INFO L231 Difference]: Finished difference. Result has 627 places, 668 transitions, 8719 flow [2024-06-21 16:25:54,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8418, PETRI_DIFFERENCE_MINUEND_PLACES=615, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8719, PETRI_PLACES=627, PETRI_TRANSITIONS=668} [2024-06-21 16:25:54,050 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 596 predicate places. [2024-06-21 16:25:54,050 INFO L495 AbstractCegarLoop]: Abstraction has has 627 places, 668 transitions, 8719 flow [2024-06-21 16:25:54,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:25:54,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:25:54,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:25:54,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-21 16:25:54,051 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:25:54,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:25:54,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1687739357, now seen corresponding path program 15 times [2024-06-21 16:25:54,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:25:54,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475879863] [2024-06-21 16:25:54,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:25:54,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:25:54,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:25:55,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:25:55,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:25:55,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475879863] [2024-06-21 16:25:55,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475879863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:25:55,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:25:55,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:25:55,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537909688] [2024-06-21 16:25:55,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:25:55,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:25:55,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:25:55,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:25:55,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:25:55,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:25:55,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 627 places, 668 transitions, 8719 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:25:55,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:25:55,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:25:55,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:25:56,448 INFO L124 PetriNetUnfolderBase]: 1361/2585 cut-off events. [2024-06-21 16:25:56,449 INFO L125 PetriNetUnfolderBase]: For 810985/810985 co-relation queries the response was YES. [2024-06-21 16:25:56,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23907 conditions, 2585 events. 1361/2585 cut-off events. For 810985/810985 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 17683 event pairs, 97 based on Foata normal form. 1/2584 useless extension candidates. Maximal degree in co-relation 23643. Up to 2129 conditions per place. [2024-06-21 16:25:56,497 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 553 selfloop transitions, 127 changer transitions 0/683 dead transitions. [2024-06-21 16:25:56,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 638 places, 683 transitions, 10518 flow [2024-06-21 16:25:56,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:25:56,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:25:56,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-21 16:25:56,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-21 16:25:56,499 INFO L175 Difference]: Start difference. First operand has 627 places, 668 transitions, 8719 flow. Second operand 12 states and 154 transitions. [2024-06-21 16:25:56,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 638 places, 683 transitions, 10518 flow [2024-06-21 16:25:59,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 626 places, 683 transitions, 10189 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-21 16:25:59,738 INFO L231 Difference]: Finished difference. Result has 627 places, 669 transitions, 8669 flow [2024-06-21 16:25:59,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8392, PETRI_DIFFERENCE_MINUEND_PLACES=615, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8669, PETRI_PLACES=627, PETRI_TRANSITIONS=669} [2024-06-21 16:25:59,739 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 596 predicate places. [2024-06-21 16:25:59,739 INFO L495 AbstractCegarLoop]: Abstraction has has 627 places, 669 transitions, 8669 flow [2024-06-21 16:25:59,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:25:59,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:25:59,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:25:59,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-21 16:25:59,739 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:25:59,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:25:59,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1687739636, now seen corresponding path program 13 times [2024-06-21 16:25:59,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:25:59,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092235564] [2024-06-21 16:25:59,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:25:59,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:25:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:26:01,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:26:01,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:26:01,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092235564] [2024-06-21 16:26:01,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092235564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:26:01,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:26:01,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:26:01,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051637749] [2024-06-21 16:26:01,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:26:01,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:26:01,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:26:01,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:26:01,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:26:01,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:26:01,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 627 places, 669 transitions, 8669 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:26:01,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:26:01,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:26:01,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:26:02,569 INFO L124 PetriNetUnfolderBase]: 1365/2597 cut-off events. [2024-06-21 16:26:02,569 INFO L125 PetriNetUnfolderBase]: For 837494/837494 co-relation queries the response was YES. [2024-06-21 16:26:02,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23951 conditions, 2597 events. 1365/2597 cut-off events. For 837494/837494 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 17780 event pairs, 99 based on Foata normal form. 2/2597 useless extension candidates. Maximal degree in co-relation 23686. Up to 2190 conditions per place. [2024-06-21 16:26:02,616 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 584 selfloop transitions, 97 changer transitions 0/684 dead transitions. [2024-06-21 16:26:02,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 638 places, 684 transitions, 10103 flow [2024-06-21 16:26:02,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:26:02,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:26:02,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-21 16:26:02,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-21 16:26:02,617 INFO L175 Difference]: Start difference. First operand has 627 places, 669 transitions, 8669 flow. Second operand 12 states and 150 transitions. [2024-06-21 16:26:02,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 638 places, 684 transitions, 10103 flow [2024-06-21 16:26:05,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 630 places, 684 transitions, 9792 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-21 16:26:05,981 INFO L231 Difference]: Finished difference. Result has 631 places, 670 transitions, 8599 flow [2024-06-21 16:26:05,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8358, PETRI_DIFFERENCE_MINUEND_PLACES=619, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=669, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8599, PETRI_PLACES=631, PETRI_TRANSITIONS=670} [2024-06-21 16:26:05,982 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 600 predicate places. [2024-06-21 16:26:05,982 INFO L495 AbstractCegarLoop]: Abstraction has has 631 places, 670 transitions, 8599 flow [2024-06-21 16:26:05,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:26:05,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:26:05,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:26:05,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-21 16:26:05,982 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:26:05,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:26:05,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1695148946, now seen corresponding path program 14 times [2024-06-21 16:26:05,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:26:05,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659854198] [2024-06-21 16:26:05,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:26:05,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:26:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:26:07,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:26:07,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:26:07,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659854198] [2024-06-21 16:26:07,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659854198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:26:07,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:26:07,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:26:07,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541581969] [2024-06-21 16:26:07,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:26:07,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:26:07,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:26:07,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:26:07,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:26:07,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:26:07,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 631 places, 670 transitions, 8599 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:26:07,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:26:07,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:26:07,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:26:08,419 INFO L124 PetriNetUnfolderBase]: 1375/2615 cut-off events. [2024-06-21 16:26:08,419 INFO L125 PetriNetUnfolderBase]: For 845677/845677 co-relation queries the response was YES. [2024-06-21 16:26:08,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24067 conditions, 2615 events. 1375/2615 cut-off events. For 845677/845677 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 17933 event pairs, 96 based on Foata normal form. 2/2615 useless extension candidates. Maximal degree in co-relation 23801. Up to 2219 conditions per place. [2024-06-21 16:26:08,470 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 587 selfloop transitions, 98 changer transitions 0/688 dead transitions. [2024-06-21 16:26:08,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 642 places, 688 transitions, 10081 flow [2024-06-21 16:26:08,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:26:08,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:26:08,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-21 16:26:08,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-21 16:26:08,471 INFO L175 Difference]: Start difference. First operand has 631 places, 670 transitions, 8599 flow. Second operand 12 states and 151 transitions. [2024-06-21 16:26:08,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 642 places, 688 transitions, 10081 flow [2024-06-21 16:26:11,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 633 places, 688 transitions, 9856 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-21 16:26:11,906 INFO L231 Difference]: Finished difference. Result has 634 places, 674 transitions, 8657 flow [2024-06-21 16:26:11,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8374, PETRI_DIFFERENCE_MINUEND_PLACES=622, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=670, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=575, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8657, PETRI_PLACES=634, PETRI_TRANSITIONS=674} [2024-06-21 16:26:11,906 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 603 predicate places. [2024-06-21 16:26:11,907 INFO L495 AbstractCegarLoop]: Abstraction has has 634 places, 674 transitions, 8657 flow [2024-06-21 16:26:11,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:26:11,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:26:11,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:26:11,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-21 16:26:11,907 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:26:11,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:26:11,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1694889476, now seen corresponding path program 15 times [2024-06-21 16:26:11,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:26:11,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698465812] [2024-06-21 16:26:11,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:26:11,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:26:11,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:26:13,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:26:13,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:26:13,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698465812] [2024-06-21 16:26:13,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698465812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:26:13,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:26:13,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:26:13,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714736100] [2024-06-21 16:26:13,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:26:13,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:26:13,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:26:13,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:26:13,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:26:13,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:26:13,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 634 places, 674 transitions, 8657 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:26:13,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:26:13,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:26:13,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:26:14,233 INFO L124 PetriNetUnfolderBase]: 1379/2623 cut-off events. [2024-06-21 16:26:14,233 INFO L125 PetriNetUnfolderBase]: For 854041/854041 co-relation queries the response was YES. [2024-06-21 16:26:14,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24166 conditions, 2623 events. 1379/2623 cut-off events. For 854041/854041 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 18001 event pairs, 98 based on Foata normal form. 2/2623 useless extension candidates. Maximal degree in co-relation 23899. Up to 2257 conditions per place. [2024-06-21 16:26:14,281 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 603 selfloop transitions, 83 changer transitions 0/689 dead transitions. [2024-06-21 16:26:14,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 645 places, 689 transitions, 10105 flow [2024-06-21 16:26:14,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:26:14,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:26:14,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-21 16:26:14,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-21 16:26:14,282 INFO L175 Difference]: Start difference. First operand has 634 places, 674 transitions, 8657 flow. Second operand 12 states and 149 transitions. [2024-06-21 16:26:14,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 645 places, 689 transitions, 10105 flow [2024-06-21 16:26:17,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 638 places, 689 transitions, 9926 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-21 16:26:17,696 INFO L231 Difference]: Finished difference. Result has 639 places, 675 transitions, 8695 flow [2024-06-21 16:26:17,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8478, PETRI_DIFFERENCE_MINUEND_PLACES=627, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=591, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8695, PETRI_PLACES=639, PETRI_TRANSITIONS=675} [2024-06-21 16:26:17,696 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 608 predicate places. [2024-06-21 16:26:17,697 INFO L495 AbstractCegarLoop]: Abstraction has has 639 places, 675 transitions, 8695 flow [2024-06-21 16:26:17,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:26:17,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:26:17,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:26:17,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-21 16:26:17,697 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:26:17,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:26:17,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1695158246, now seen corresponding path program 16 times [2024-06-21 16:26:17,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:26:17,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582232461] [2024-06-21 16:26:17,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:26:17,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:26:17,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:26:18,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:26:18,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:26:18,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582232461] [2024-06-21 16:26:18,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582232461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:26:18,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:26:18,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:26:18,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122471725] [2024-06-21 16:26:18,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:26:18,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:26:18,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:26:18,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:26:18,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:26:19,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:26:19,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 639 places, 675 transitions, 8695 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:26:19,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:26:19,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:26:19,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:26:19,934 INFO L124 PetriNetUnfolderBase]: 1405/2677 cut-off events. [2024-06-21 16:26:19,934 INFO L125 PetriNetUnfolderBase]: For 1016718/1016718 co-relation queries the response was YES. [2024-06-21 16:26:19,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26118 conditions, 2677 events. 1405/2677 cut-off events. For 1016718/1016718 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 18383 event pairs, 108 based on Foata normal form. 2/2677 useless extension candidates. Maximal degree in co-relation 25850. Up to 2184 conditions per place. [2024-06-21 16:26:19,985 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 591 selfloop transitions, 101 changer transitions 0/695 dead transitions. [2024-06-21 16:26:19,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 650 places, 695 transitions, 10625 flow [2024-06-21 16:26:19,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:26:19,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:26:19,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-21 16:26:19,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 16:26:19,987 INFO L175 Difference]: Start difference. First operand has 639 places, 675 transitions, 8695 flow. Second operand 12 states and 156 transitions. [2024-06-21 16:26:19,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 650 places, 695 transitions, 10625 flow [2024-06-21 16:26:24,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 639 places, 695 transitions, 10389 flow, removed 20 selfloop flow, removed 11 redundant places. [2024-06-21 16:26:24,039 INFO L231 Difference]: Finished difference. Result has 640 places, 676 transitions, 8711 flow [2024-06-21 16:26:24,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8459, PETRI_DIFFERENCE_MINUEND_PLACES=628, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=675, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=575, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8711, PETRI_PLACES=640, PETRI_TRANSITIONS=676} [2024-06-21 16:26:24,039 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 609 predicate places. [2024-06-21 16:26:24,039 INFO L495 AbstractCegarLoop]: Abstraction has has 640 places, 676 transitions, 8711 flow [2024-06-21 16:26:24,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:26:24,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:26:24,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:26:24,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-21 16:26:24,040 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:26:24,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:26:24,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1493590697, now seen corresponding path program 16 times [2024-06-21 16:26:24,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:26:24,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638269412] [2024-06-21 16:26:24,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:26:24,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:26:24,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:26:25,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:26:25,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:26:25,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638269412] [2024-06-21 16:26:25,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638269412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:26:25,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:26:25,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:26:25,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412461900] [2024-06-21 16:26:25,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:26:25,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:26:25,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:26:25,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:26:25,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:26:25,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:26:25,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 640 places, 676 transitions, 8711 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:26:25,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:26:25,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:26:25,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:26:26,749 INFO L124 PetriNetUnfolderBase]: 1411/2687 cut-off events. [2024-06-21 16:26:26,749 INFO L125 PetriNetUnfolderBase]: For 1026900/1026900 co-relation queries the response was YES. [2024-06-21 16:26:26,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26258 conditions, 2687 events. 1411/2687 cut-off events. For 1026900/1026900 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 18489 event pairs, 110 based on Foata normal form. 2/2687 useless extension candidates. Maximal degree in co-relation 25989. Up to 2315 conditions per place. [2024-06-21 16:26:26,798 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 601 selfloop transitions, 90 changer transitions 0/694 dead transitions. [2024-06-21 16:26:26,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 651 places, 694 transitions, 10645 flow [2024-06-21 16:26:26,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:26:26,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:26:26,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-21 16:26:26,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-21 16:26:26,800 INFO L175 Difference]: Start difference. First operand has 640 places, 676 transitions, 8711 flow. Second operand 12 states and 150 transitions. [2024-06-21 16:26:26,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 651 places, 694 transitions, 10645 flow [2024-06-21 16:26:31,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 639 places, 694 transitions, 10201 flow, removed 23 selfloop flow, removed 12 redundant places. [2024-06-21 16:26:31,036 INFO L231 Difference]: Finished difference. Result has 640 places, 680 transitions, 8575 flow [2024-06-21 16:26:31,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8267, PETRI_DIFFERENCE_MINUEND_PLACES=628, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=590, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8575, PETRI_PLACES=640, PETRI_TRANSITIONS=680} [2024-06-21 16:26:31,037 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 609 predicate places. [2024-06-21 16:26:31,037 INFO L495 AbstractCegarLoop]: Abstraction has has 640 places, 680 transitions, 8575 flow [2024-06-21 16:26:31,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:26:31,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:26:31,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:26:31,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-21 16:26:31,038 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:26:31,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:26:31,038 INFO L85 PathProgramCache]: Analyzing trace with hash -697419235, now seen corresponding path program 17 times [2024-06-21 16:26:31,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:26:31,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727853014] [2024-06-21 16:26:31,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:26:31,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:26:31,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:26:32,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:26:32,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:26:32,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727853014] [2024-06-21 16:26:32,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727853014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:26:32,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:26:32,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:26:32,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528820378] [2024-06-21 16:26:32,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:26:32,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:26:32,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:26:32,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:26:32,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:26:32,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:26:32,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 640 places, 680 transitions, 8575 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:26:32,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:26:32,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:26:32,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:26:33,847 INFO L124 PetriNetUnfolderBase]: 1407/2681 cut-off events. [2024-06-21 16:26:33,847 INFO L125 PetriNetUnfolderBase]: For 995702/995702 co-relation queries the response was YES. [2024-06-21 16:26:33,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25244 conditions, 2681 events. 1407/2681 cut-off events. For 995702/995702 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 18461 event pairs, 113 based on Foata normal form. 2/2681 useless extension candidates. Maximal degree in co-relation 24976. Up to 2155 conditions per place. [2024-06-21 16:26:33,890 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 542 selfloop transitions, 149 changer transitions 0/694 dead transitions. [2024-06-21 16:26:33,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 651 places, 694 transitions, 10391 flow [2024-06-21 16:26:33,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:26:33,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:26:33,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-21 16:26:33,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-21 16:26:33,891 INFO L175 Difference]: Start difference. First operand has 640 places, 680 transitions, 8575 flow. Second operand 12 states and 154 transitions. [2024-06-21 16:26:33,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 651 places, 694 transitions, 10391 flow [2024-06-21 16:26:37,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 641 places, 694 transitions, 10043 flow, removed 84 selfloop flow, removed 10 redundant places. [2024-06-21 16:26:37,161 INFO L231 Difference]: Finished difference. Result has 642 places, 680 transitions, 8533 flow [2024-06-21 16:26:37,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8227, PETRI_DIFFERENCE_MINUEND_PLACES=630, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=680, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8533, PETRI_PLACES=642, PETRI_TRANSITIONS=680} [2024-06-21 16:26:37,162 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 611 predicate places. [2024-06-21 16:26:37,162 INFO L495 AbstractCegarLoop]: Abstraction has has 642 places, 680 transitions, 8533 flow [2024-06-21 16:26:37,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:26:37,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:26:37,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:26:37,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-21 16:26:37,162 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:26:37,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:26:37,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1493800226, now seen corresponding path program 17 times [2024-06-21 16:26:37,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:26:37,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846964575] [2024-06-21 16:26:37,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:26:37,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:26:37,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:26:38,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:26:38,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:26:38,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846964575] [2024-06-21 16:26:38,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846964575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:26:38,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:26:38,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:26:38,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479992774] [2024-06-21 16:26:38,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:26:38,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:26:38,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:26:38,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:26:38,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:26:38,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:26:38,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 642 places, 680 transitions, 8533 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:26:38,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:26:38,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:26:38,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:26:39,585 INFO L124 PetriNetUnfolderBase]: 1394/2658 cut-off events. [2024-06-21 16:26:39,585 INFO L125 PetriNetUnfolderBase]: For 963715/963715 co-relation queries the response was YES. [2024-06-21 16:26:39,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23093 conditions, 2658 events. 1394/2658 cut-off events. For 963715/963715 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 18288 event pairs, 101 based on Foata normal form. 10/2666 useless extension candidates. Maximal degree in co-relation 22824. Up to 2280 conditions per place. [2024-06-21 16:26:39,630 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 618 selfloop transitions, 71 changer transitions 5/697 dead transitions. [2024-06-21 16:26:39,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 653 places, 697 transitions, 10019 flow [2024-06-21 16:26:39,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:26:39,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:26:39,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-21 16:26:39,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-21 16:26:39,631 INFO L175 Difference]: Start difference. First operand has 642 places, 680 transitions, 8533 flow. Second operand 12 states and 150 transitions. [2024-06-21 16:26:39,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 653 places, 697 transitions, 10019 flow [2024-06-21 16:26:43,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 642 places, 697 transitions, 9690 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-21 16:26:43,629 INFO L231 Difference]: Finished difference. Result has 643 places, 678 transitions, 8321 flow [2024-06-21 16:26:43,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8204, PETRI_DIFFERENCE_MINUEND_PLACES=631, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=680, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=609, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8321, PETRI_PLACES=643, PETRI_TRANSITIONS=678} [2024-06-21 16:26:43,630 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 612 predicate places. [2024-06-21 16:26:43,630 INFO L495 AbstractCegarLoop]: Abstraction has has 643 places, 678 transitions, 8321 flow [2024-06-21 16:26:43,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:26:43,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:26:43,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:26:43,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-21 16:26:43,631 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:26:43,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:26:43,631 INFO L85 PathProgramCache]: Analyzing trace with hash -898508485, now seen corresponding path program 18 times [2024-06-21 16:26:43,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:26:43,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806777664] [2024-06-21 16:26:43,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:26:43,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:26:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:26:45,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:26:45,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:26:45,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806777664] [2024-06-21 16:26:45,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806777664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:26:45,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:26:45,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:26:45,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039214742] [2024-06-21 16:26:45,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:26:45,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:26:45,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:26:45,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:26:45,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:26:45,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:26:45,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 643 places, 678 transitions, 8321 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:26:45,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:26:45,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:26:45,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:26:46,282 INFO L124 PetriNetUnfolderBase]: 1382/2640 cut-off events. [2024-06-21 16:26:46,282 INFO L125 PetriNetUnfolderBase]: For 771618/771618 co-relation queries the response was YES. [2024-06-21 16:26:46,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22372 conditions, 2640 events. 1382/2640 cut-off events. For 771618/771618 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 18198 event pairs, 104 based on Foata normal form. 2/2640 useless extension candidates. Maximal degree in co-relation 22102. Up to 2253 conditions per place. [2024-06-21 16:26:46,331 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 591 selfloop transitions, 97 changer transitions 0/691 dead transitions. [2024-06-21 16:26:46,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 654 places, 691 transitions, 9727 flow [2024-06-21 16:26:46,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:26:46,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:26:46,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-21 16:26:46,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-21 16:26:46,333 INFO L175 Difference]: Start difference. First operand has 643 places, 678 transitions, 8321 flow. Second operand 12 states and 147 transitions. [2024-06-21 16:26:46,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 654 places, 691 transitions, 9727 flow [2024-06-21 16:26:49,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 642 places, 691 transitions, 9464 flow, removed 40 selfloop flow, removed 12 redundant places. [2024-06-21 16:26:49,624 INFO L231 Difference]: Finished difference. Result has 643 places, 678 transitions, 8260 flow [2024-06-21 16:26:49,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8058, PETRI_DIFFERENCE_MINUEND_PLACES=631, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=678, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=581, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8260, PETRI_PLACES=643, PETRI_TRANSITIONS=678} [2024-06-21 16:26:49,625 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 612 predicate places. [2024-06-21 16:26:49,625 INFO L495 AbstractCegarLoop]: Abstraction has has 643 places, 678 transitions, 8260 flow [2024-06-21 16:26:49,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:26:49,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:26:49,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:26:49,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-21 16:26:49,625 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:26:49,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:26:49,626 INFO L85 PathProgramCache]: Analyzing trace with hash -317195219, now seen corresponding path program 16 times [2024-06-21 16:26:49,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:26:49,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370735615] [2024-06-21 16:26:49,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:26:49,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:26:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:26:50,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:26:50,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:26:50,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370735615] [2024-06-21 16:26:50,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370735615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:26:50,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:26:50,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:26:50,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194134347] [2024-06-21 16:26:50,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:26:50,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:26:50,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:26:50,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:26:50,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:26:50,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:26:50,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 643 places, 678 transitions, 8260 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:26:50,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:26:50,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:26:50,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:26:51,665 INFO L124 PetriNetUnfolderBase]: 1386/2648 cut-off events. [2024-06-21 16:26:51,666 INFO L125 PetriNetUnfolderBase]: For 780453/780453 co-relation queries the response was YES. [2024-06-21 16:26:51,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22477 conditions, 2648 events. 1386/2648 cut-off events. For 780453/780453 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 18267 event pairs, 110 based on Foata normal form. 2/2645 useless extension candidates. Maximal degree in co-relation 22206. Up to 2162 conditions per place. [2024-06-21 16:26:51,712 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 566 selfloop transitions, 121 changer transitions 0/690 dead transitions. [2024-06-21 16:26:51,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 653 places, 690 transitions, 9722 flow [2024-06-21 16:26:51,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:26:51,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:26:51,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-21 16:26:51,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-21 16:26:51,714 INFO L175 Difference]: Start difference. First operand has 643 places, 678 transitions, 8260 flow. Second operand 11 states and 136 transitions. [2024-06-21 16:26:51,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 653 places, 690 transitions, 9722 flow [2024-06-21 16:26:54,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 642 places, 690 transitions, 9471 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-21 16:26:54,989 INFO L231 Difference]: Finished difference. Result has 643 places, 679 transitions, 8321 flow [2024-06-21 16:26:54,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8009, PETRI_DIFFERENCE_MINUEND_PLACES=632, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=678, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8321, PETRI_PLACES=643, PETRI_TRANSITIONS=679} [2024-06-21 16:26:54,989 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 612 predicate places. [2024-06-21 16:26:54,989 INFO L495 AbstractCegarLoop]: Abstraction has has 643 places, 679 transitions, 8321 flow [2024-06-21 16:26:54,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:26:54,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:26:54,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:26:54,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-21 16:26:54,990 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:26:54,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:26:54,990 INFO L85 PathProgramCache]: Analyzing trace with hash 252994452, now seen corresponding path program 18 times [2024-06-21 16:26:54,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:26:54,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600857719] [2024-06-21 16:26:54,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:26:54,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:26:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:26:56,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:26:56,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:26:56,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600857719] [2024-06-21 16:26:56,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600857719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:26:56,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:26:56,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:26:56,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962540858] [2024-06-21 16:26:56,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:26:56,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:26:56,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:26:56,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:26:56,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:26:56,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:26:56,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 643 places, 679 transitions, 8321 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:26:56,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:26:56,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:26:56,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:26:57,497 INFO L124 PetriNetUnfolderBase]: 1397/2665 cut-off events. [2024-06-21 16:26:57,498 INFO L125 PetriNetUnfolderBase]: For 832516/832516 co-relation queries the response was YES. [2024-06-21 16:26:57,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23175 conditions, 2665 events. 1397/2665 cut-off events. For 832516/832516 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 18456 event pairs, 213 based on Foata normal form. 2/2665 useless extension candidates. Maximal degree in co-relation 22903. Up to 2418 conditions per place. [2024-06-21 16:26:57,548 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 663 selfloop transitions, 30 changer transitions 0/696 dead transitions. [2024-06-21 16:26:57,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 655 places, 696 transitions, 10221 flow [2024-06-21 16:26:57,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 16:26:57,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 16:26:57,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 153 transitions. [2024-06-21 16:26:57,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36778846153846156 [2024-06-21 16:26:57,549 INFO L175 Difference]: Start difference. First operand has 643 places, 679 transitions, 8321 flow. Second operand 13 states and 153 transitions. [2024-06-21 16:26:57,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 655 places, 696 transitions, 10221 flow [2024-06-21 16:27:00,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 646 places, 696 transitions, 9919 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-21 16:27:01,005 INFO L231 Difference]: Finished difference. Result has 647 places, 681 transitions, 8157 flow [2024-06-21 16:27:01,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8019, PETRI_DIFFERENCE_MINUEND_PLACES=634, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=679, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=650, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8157, PETRI_PLACES=647, PETRI_TRANSITIONS=681} [2024-06-21 16:27:01,005 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 616 predicate places. [2024-06-21 16:27:01,006 INFO L495 AbstractCegarLoop]: Abstraction has has 647 places, 681 transitions, 8157 flow [2024-06-21 16:27:01,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:27:01,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:27:01,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:27:01,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-21 16:27:01,006 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:27:01,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:27:01,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1021856757, now seen corresponding path program 19 times [2024-06-21 16:27:01,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:27:01,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606829959] [2024-06-21 16:27:01,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:27:01,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:27:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:27:02,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:27:02,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:27:02,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606829959] [2024-06-21 16:27:02,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606829959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:27:02,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:27:02,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:27:02,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267177225] [2024-06-21 16:27:02,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:27:02,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:27:02,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:27:02,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:27:02,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:27:02,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:27:02,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 647 places, 681 transitions, 8157 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:27:02,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:27:02,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:27:02,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:27:03,310 INFO L124 PetriNetUnfolderBase]: 1410/2694 cut-off events. [2024-06-21 16:27:03,310 INFO L125 PetriNetUnfolderBase]: For 858707/858707 co-relation queries the response was YES. [2024-06-21 16:27:03,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23537 conditions, 2694 events. 1410/2694 cut-off events. For 858707/858707 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 18686 event pairs, 217 based on Foata normal form. 1/2693 useless extension candidates. Maximal degree in co-relation 23264. Up to 2448 conditions per place. [2024-06-21 16:27:03,361 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 663 selfloop transitions, 34 changer transitions 0/700 dead transitions. [2024-06-21 16:27:03,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 659 places, 700 transitions, 10137 flow [2024-06-21 16:27:03,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 16:27:03,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 16:27:03,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 153 transitions. [2024-06-21 16:27:03,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36778846153846156 [2024-06-21 16:27:03,363 INFO L175 Difference]: Start difference. First operand has 647 places, 681 transitions, 8157 flow. Second operand 13 states and 153 transitions. [2024-06-21 16:27:03,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 659 places, 700 transitions, 10137 flow [2024-06-21 16:27:07,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 650 places, 700 transitions, 10057 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-21 16:27:07,091 INFO L231 Difference]: Finished difference. Result has 652 places, 687 transitions, 8319 flow [2024-06-21 16:27:07,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8077, PETRI_DIFFERENCE_MINUEND_PLACES=638, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=649, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8319, PETRI_PLACES=652, PETRI_TRANSITIONS=687} [2024-06-21 16:27:07,092 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 621 predicate places. [2024-06-21 16:27:07,092 INFO L495 AbstractCegarLoop]: Abstraction has has 652 places, 687 transitions, 8319 flow [2024-06-21 16:27:07,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:27:07,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:27:07,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:27:07,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-21 16:27:07,092 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:27:07,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:27:07,093 INFO L85 PathProgramCache]: Analyzing trace with hash -51767478, now seen corresponding path program 19 times [2024-06-21 16:27:07,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:27:07,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352432710] [2024-06-21 16:27:07,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:27:07,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:27:07,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:27:08,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:27:08,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:27:08,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352432710] [2024-06-21 16:27:08,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352432710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:27:08,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:27:08,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:27:08,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372441846] [2024-06-21 16:27:08,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:27:08,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:27:08,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:27:08,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:27:08,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:27:08,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:27:08,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 652 places, 687 transitions, 8319 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:27:08,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:27:08,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:27:08,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:27:09,594 INFO L124 PetriNetUnfolderBase]: 1428/2728 cut-off events. [2024-06-21 16:27:09,594 INFO L125 PetriNetUnfolderBase]: For 931769/931769 co-relation queries the response was YES. [2024-06-21 16:27:09,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24262 conditions, 2728 events. 1428/2728 cut-off events. For 931769/931769 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 19018 event pairs, 218 based on Foata normal form. 2/2728 useless extension candidates. Maximal degree in co-relation 23986. Up to 2484 conditions per place. [2024-06-21 16:27:09,646 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 677 selfloop transitions, 26 changer transitions 0/706 dead transitions. [2024-06-21 16:27:09,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 663 places, 706 transitions, 10270 flow [2024-06-21 16:27:09,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:27:09,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:27:09,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-21 16:27:09,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-21 16:27:09,647 INFO L175 Difference]: Start difference. First operand has 652 places, 687 transitions, 8319 flow. Second operand 12 states and 142 transitions. [2024-06-21 16:27:09,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 663 places, 706 transitions, 10270 flow [2024-06-21 16:27:13,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 654 places, 706 transitions, 10196 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-21 16:27:13,817 INFO L231 Difference]: Finished difference. Result has 656 places, 692 transitions, 8410 flow [2024-06-21 16:27:13,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8245, PETRI_DIFFERENCE_MINUEND_PLACES=643, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=687, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=664, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8410, PETRI_PLACES=656, PETRI_TRANSITIONS=692} [2024-06-21 16:27:13,818 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 625 predicate places. [2024-06-21 16:27:13,818 INFO L495 AbstractCegarLoop]: Abstraction has has 656 places, 692 transitions, 8410 flow [2024-06-21 16:27:13,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:27:13,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:27:13,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:27:13,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-21 16:27:13,818 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:27:13,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:27:13,819 INFO L85 PathProgramCache]: Analyzing trace with hash 264036342, now seen corresponding path program 20 times [2024-06-21 16:27:13,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:27:13,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639086350] [2024-06-21 16:27:13,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:27:13,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:27:13,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:27:15,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:27:15,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:27:15,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639086350] [2024-06-21 16:27:15,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639086350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:27:15,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:27:15,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:27:15,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811131360] [2024-06-21 16:27:15,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:27:15,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:27:15,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:27:15,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:27:15,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:27:15,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:27:15,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 656 places, 692 transitions, 8410 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:27:15,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:27:15,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:27:15,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:27:16,215 INFO L124 PetriNetUnfolderBase]: 1439/2749 cut-off events. [2024-06-21 16:27:16,215 INFO L125 PetriNetUnfolderBase]: For 985091/985091 co-relation queries the response was YES. [2024-06-21 16:27:16,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24975 conditions, 2749 events. 1439/2749 cut-off events. For 985091/985091 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 19171 event pairs, 217 based on Foata normal form. 2/2749 useless extension candidates. Maximal degree in co-relation 24696. Up to 2385 conditions per place. [2024-06-21 16:27:16,267 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 672 selfloop transitions, 36 changer transitions 0/711 dead transitions. [2024-06-21 16:27:16,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 711 transitions, 10358 flow [2024-06-21 16:27:16,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 16:27:16,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 16:27:16,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 153 transitions. [2024-06-21 16:27:16,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36778846153846156 [2024-06-21 16:27:16,268 INFO L175 Difference]: Start difference. First operand has 656 places, 692 transitions, 8410 flow. Second operand 13 states and 153 transitions. [2024-06-21 16:27:16,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 668 places, 711 transitions, 10358 flow [2024-06-21 16:27:20,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 661 places, 711 transitions, 10279 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-21 16:27:20,789 INFO L231 Difference]: Finished difference. Result has 662 places, 694 transitions, 8489 flow [2024-06-21 16:27:20,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8331, PETRI_DIFFERENCE_MINUEND_PLACES=649, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=657, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8489, PETRI_PLACES=662, PETRI_TRANSITIONS=694} [2024-06-21 16:27:20,790 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 631 predicate places. [2024-06-21 16:27:20,790 INFO L495 AbstractCegarLoop]: Abstraction has has 662 places, 694 transitions, 8489 flow [2024-06-21 16:27:20,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:27:20,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:27:20,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:27:20,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-21 16:27:20,790 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:27:20,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:27:20,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1921903684, now seen corresponding path program 21 times [2024-06-21 16:27:20,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:27:20,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743359455] [2024-06-21 16:27:20,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:27:20,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:27:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:27:21,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:27:21,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:27:21,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743359455] [2024-06-21 16:27:21,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743359455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:27:21,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:27:21,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:27:21,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975200855] [2024-06-21 16:27:21,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:27:21,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:27:21,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:27:21,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:27:21,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:27:21,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:27:21,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 662 places, 694 transitions, 8489 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:27:21,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:27:21,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:27:21,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:27:22,833 INFO L124 PetriNetUnfolderBase]: 1437/2747 cut-off events. [2024-06-21 16:27:22,834 INFO L125 PetriNetUnfolderBase]: For 994662/994662 co-relation queries the response was YES. [2024-06-21 16:27:22,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24183 conditions, 2747 events. 1437/2747 cut-off events. For 994662/994662 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 19186 event pairs, 221 based on Foata normal form. 6/2751 useless extension candidates. Maximal degree in co-relation 23902. Up to 2496 conditions per place. [2024-06-21 16:27:22,885 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 669 selfloop transitions, 34 changer transitions 0/706 dead transitions. [2024-06-21 16:27:22,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 672 places, 706 transitions, 9961 flow [2024-06-21 16:27:22,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:27:22,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:27:22,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-21 16:27:22,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-21 16:27:22,886 INFO L175 Difference]: Start difference. First operand has 662 places, 694 transitions, 8489 flow. Second operand 11 states and 129 transitions. [2024-06-21 16:27:22,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 672 places, 706 transitions, 9961 flow [2024-06-21 16:27:26,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 663 places, 706 transitions, 9811 flow, removed 55 selfloop flow, removed 9 redundant places. [2024-06-21 16:27:26,868 INFO L231 Difference]: Finished difference. Result has 664 places, 695 transitions, 8459 flow [2024-06-21 16:27:26,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8347, PETRI_DIFFERENCE_MINUEND_PLACES=653, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=694, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=660, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8459, PETRI_PLACES=664, PETRI_TRANSITIONS=695} [2024-06-21 16:27:26,869 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 633 predicate places. [2024-06-21 16:27:26,869 INFO L495 AbstractCegarLoop]: Abstraction has has 664 places, 695 transitions, 8459 flow [2024-06-21 16:27:26,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:27:26,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:27:26,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:27:26,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-21 16:27:26,870 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:27:26,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:27:26,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1507352316, now seen corresponding path program 22 times [2024-06-21 16:27:26,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:27:26,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183710762] [2024-06-21 16:27:26,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:27:26,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:27:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:27:27,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:27:27,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:27:27,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183710762] [2024-06-21 16:27:27,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183710762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:27:27,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:27:27,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:27:27,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329490073] [2024-06-21 16:27:27,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:27:27,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:27:27,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:27:27,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:27:27,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:27:28,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:27:28,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 664 places, 695 transitions, 8459 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:27:28,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:27:28,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:27:28,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:27:28,919 INFO L124 PetriNetUnfolderBase]: 1441/2755 cut-off events. [2024-06-21 16:27:28,920 INFO L125 PetriNetUnfolderBase]: For 913760/913760 co-relation queries the response was YES. [2024-06-21 16:27:28,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24141 conditions, 2755 events. 1441/2755 cut-off events. For 913760/913760 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 19244 event pairs, 219 based on Foata normal form. 2/2755 useless extension candidates. Maximal degree in co-relation 23858. Up to 2419 conditions per place. [2024-06-21 16:27:28,972 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 672 selfloop transitions, 35 changer transitions 0/710 dead transitions. [2024-06-21 16:27:28,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 674 places, 710 transitions, 10359 flow [2024-06-21 16:27:28,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:27:28,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:27:28,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-21 16:27:28,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 16:27:28,974 INFO L175 Difference]: Start difference. First operand has 664 places, 695 transitions, 8459 flow. Second operand 11 states and 132 transitions. [2024-06-21 16:27:28,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 674 places, 710 transitions, 10359 flow [2024-06-21 16:27:33,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 665 places, 710 transitions, 10271 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-21 16:27:33,391 INFO L231 Difference]: Finished difference. Result has 666 places, 696 transitions, 8482 flow [2024-06-21 16:27:33,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8371, PETRI_DIFFERENCE_MINUEND_PLACES=655, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=695, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8482, PETRI_PLACES=666, PETRI_TRANSITIONS=696} [2024-06-21 16:27:33,392 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 635 predicate places. [2024-06-21 16:27:33,392 INFO L495 AbstractCegarLoop]: Abstraction has has 666 places, 696 transitions, 8482 flow [2024-06-21 16:27:33,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:27:33,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:27:33,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:27:33,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-21 16:27:33,393 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:27:33,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:27:33,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1717889099, now seen corresponding path program 17 times [2024-06-21 16:27:33,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:27:33,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072138060] [2024-06-21 16:27:33,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:27:33,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:27:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:27:34,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:27:34,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:27:34,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072138060] [2024-06-21 16:27:34,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072138060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:27:34,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:27:34,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:27:34,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049319604] [2024-06-21 16:27:34,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:27:34,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:27:34,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:27:34,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:27:34,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:27:34,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:27:34,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 666 places, 696 transitions, 8482 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:27:34,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:27:34,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:27:34,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:27:35,609 INFO L124 PetriNetUnfolderBase]: 1445/2763 cut-off events. [2024-06-21 16:27:35,609 INFO L125 PetriNetUnfolderBase]: For 924268/924268 co-relation queries the response was YES. [2024-06-21 16:27:35,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24303 conditions, 2763 events. 1445/2763 cut-off events. For 924268/924268 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 19335 event pairs, 121 based on Foata normal form. 2/2760 useless extension candidates. Maximal degree in co-relation 24019. Up to 2410 conditions per place. [2024-06-21 16:27:35,663 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 634 selfloop transitions, 71 changer transitions 0/708 dead transitions. [2024-06-21 16:27:35,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 676 places, 708 transitions, 9982 flow [2024-06-21 16:27:35,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:27:35,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:27:35,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-21 16:27:35,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-21 16:27:35,664 INFO L175 Difference]: Start difference. First operand has 666 places, 696 transitions, 8482 flow. Second operand 11 states and 138 transitions. [2024-06-21 16:27:35,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 676 places, 708 transitions, 9982 flow [2024-06-21 16:27:40,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 667 places, 708 transitions, 9882 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-21 16:27:40,111 INFO L231 Difference]: Finished difference. Result has 668 places, 697 transitions, 8596 flow [2024-06-21 16:27:40,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8382, PETRI_DIFFERENCE_MINUEND_PLACES=657, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8596, PETRI_PLACES=668, PETRI_TRANSITIONS=697} [2024-06-21 16:27:40,112 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 637 predicate places. [2024-06-21 16:27:40,112 INFO L495 AbstractCegarLoop]: Abstraction has has 668 places, 697 transitions, 8596 flow [2024-06-21 16:27:40,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:27:40,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:27:40,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:27:40,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-21 16:27:40,113 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:27:40,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:27:40,113 INFO L85 PathProgramCache]: Analyzing trace with hash -858139845, now seen corresponding path program 18 times [2024-06-21 16:27:40,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:27:40,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223710653] [2024-06-21 16:27:40,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:27:40,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:27:40,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:27:41,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:27:41,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:27:41,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223710653] [2024-06-21 16:27:41,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223710653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:27:41,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:27:41,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:27:41,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207480098] [2024-06-21 16:27:41,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:27:41,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:27:41,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:27:41,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:27:41,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:27:41,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:27:41,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 668 places, 697 transitions, 8596 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:27:41,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:27:41,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:27:41,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:27:42,246 INFO L124 PetriNetUnfolderBase]: 1449/2771 cut-off events. [2024-06-21 16:27:42,246 INFO L125 PetriNetUnfolderBase]: For 935239/935239 co-relation queries the response was YES. [2024-06-21 16:27:42,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24498 conditions, 2771 events. 1449/2771 cut-off events. For 935239/935239 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 19363 event pairs, 119 based on Foata normal form. 2/2768 useless extension candidates. Maximal degree in co-relation 24213. Up to 2430 conditions per place. [2024-06-21 16:27:42,302 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 640 selfloop transitions, 66 changer transitions 0/709 dead transitions. [2024-06-21 16:27:42,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 678 places, 709 transitions, 10100 flow [2024-06-21 16:27:42,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:27:42,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:27:42,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-21 16:27:42,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-21 16:27:42,304 INFO L175 Difference]: Start difference. First operand has 668 places, 697 transitions, 8596 flow. Second operand 11 states and 136 transitions. [2024-06-21 16:27:42,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 678 places, 709 transitions, 10100 flow [2024-06-21 16:27:46,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 669 places, 709 transitions, 9896 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-21 16:27:46,836 INFO L231 Difference]: Finished difference. Result has 670 places, 698 transitions, 8598 flow [2024-06-21 16:27:46,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8392, PETRI_DIFFERENCE_MINUEND_PLACES=659, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=631, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8598, PETRI_PLACES=670, PETRI_TRANSITIONS=698} [2024-06-21 16:27:46,837 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 639 predicate places. [2024-06-21 16:27:46,837 INFO L495 AbstractCegarLoop]: Abstraction has has 670 places, 698 transitions, 8598 flow [2024-06-21 16:27:46,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:27:46,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:27:46,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:27:46,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-21 16:27:46,837 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:27:46,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:27:46,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1052079255, now seen corresponding path program 19 times [2024-06-21 16:27:46,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:27:46,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146704221] [2024-06-21 16:27:46,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:27:46,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:27:46,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:27:48,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:27:48,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:27:48,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146704221] [2024-06-21 16:27:48,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146704221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:27:48,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:27:48,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:27:48,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448441781] [2024-06-21 16:27:48,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:27:48,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:27:48,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:27:48,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:27:48,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:27:48,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:27:48,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 670 places, 698 transitions, 8598 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:27:48,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:27:48,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:27:48,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:27:49,241 INFO L124 PetriNetUnfolderBase]: 1453/2779 cut-off events. [2024-06-21 16:27:49,242 INFO L125 PetriNetUnfolderBase]: For 944216/944216 co-relation queries the response was YES. [2024-06-21 16:27:49,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24564 conditions, 2779 events. 1453/2779 cut-off events. For 944216/944216 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 19443 event pairs, 119 based on Foata normal form. 2/2776 useless extension candidates. Maximal degree in co-relation 24278. Up to 2447 conditions per place. [2024-06-21 16:27:49,298 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 645 selfloop transitions, 62 changer transitions 0/710 dead transitions. [2024-06-21 16:27:49,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 680 places, 710 transitions, 10106 flow [2024-06-21 16:27:49,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:27:49,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:27:49,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-21 16:27:49,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-21 16:27:49,299 INFO L175 Difference]: Start difference. First operand has 670 places, 698 transitions, 8598 flow. Second operand 11 states and 134 transitions. [2024-06-21 16:27:49,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 680 places, 710 transitions, 10106 flow [2024-06-21 16:27:54,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 671 places, 710 transitions, 9910 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-21 16:27:54,330 INFO L231 Difference]: Finished difference. Result has 672 places, 699 transitions, 8602 flow [2024-06-21 16:27:54,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8402, PETRI_DIFFERENCE_MINUEND_PLACES=661, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=636, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8602, PETRI_PLACES=672, PETRI_TRANSITIONS=699} [2024-06-21 16:27:54,331 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 641 predicate places. [2024-06-21 16:27:54,331 INFO L495 AbstractCegarLoop]: Abstraction has has 672 places, 699 transitions, 8602 flow [2024-06-21 16:27:54,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:27:54,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:27:54,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:27:54,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-21 16:27:54,332 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:27:54,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:27:54,332 INFO L85 PathProgramCache]: Analyzing trace with hash 2095311021, now seen corresponding path program 20 times [2024-06-21 16:27:54,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:27:54,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890926517] [2024-06-21 16:27:54,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:27:54,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:27:54,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:27:55,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:27:55,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:27:55,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890926517] [2024-06-21 16:27:55,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890926517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:27:55,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:27:55,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:27:55,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344516797] [2024-06-21 16:27:55,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:27:55,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:27:55,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:27:55,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:27:55,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:27:55,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:27:55,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 672 places, 699 transitions, 8602 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:27:55,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:27:55,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:27:55,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:27:56,555 INFO L124 PetriNetUnfolderBase]: 1457/2787 cut-off events. [2024-06-21 16:27:56,556 INFO L125 PetriNetUnfolderBase]: For 952828/952828 co-relation queries the response was YES. [2024-06-21 16:27:56,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24632 conditions, 2787 events. 1457/2787 cut-off events. For 952828/952828 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 19533 event pairs, 123 based on Foata normal form. 2/2784 useless extension candidates. Maximal degree in co-relation 24345. Up to 2461 conditions per place. [2024-06-21 16:27:56,609 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 649 selfloop transitions, 60 changer transitions 0/712 dead transitions. [2024-06-21 16:27:56,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 682 places, 712 transitions, 10128 flow [2024-06-21 16:27:56,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:27:56,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:27:56,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-21 16:27:56,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 16:27:56,610 INFO L175 Difference]: Start difference. First operand has 672 places, 699 transitions, 8602 flow. Second operand 11 states and 132 transitions. [2024-06-21 16:27:56,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 682 places, 712 transitions, 10128 flow [2024-06-21 16:28:02,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 673 places, 712 transitions, 9936 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-21 16:28:02,265 INFO L231 Difference]: Finished difference. Result has 675 places, 701 transitions, 8625 flow [2024-06-21 16:28:02,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8412, PETRI_DIFFERENCE_MINUEND_PLACES=663, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=699, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=639, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8625, PETRI_PLACES=675, PETRI_TRANSITIONS=701} [2024-06-21 16:28:02,266 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 644 predicate places. [2024-06-21 16:28:02,266 INFO L495 AbstractCegarLoop]: Abstraction has has 675 places, 701 transitions, 8625 flow [2024-06-21 16:28:02,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:28:02,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:28:02,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:28:02,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-21 16:28:02,266 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:28:02,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:28:02,267 INFO L85 PathProgramCache]: Analyzing trace with hash 2095163151, now seen corresponding path program 21 times [2024-06-21 16:28:02,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:28:02,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787598199] [2024-06-21 16:28:02,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:28:02,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:28:02,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:28:03,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:28:03,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:28:03,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787598199] [2024-06-21 16:28:03,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787598199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:28:03,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:28:03,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:28:03,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189184378] [2024-06-21 16:28:03,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:28:03,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:28:03,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:28:03,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:28:03,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:28:03,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:28:03,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 675 places, 701 transitions, 8625 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:28:03,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:28:03,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:28:03,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:28:04,450 INFO L124 PetriNetUnfolderBase]: 1461/2795 cut-off events. [2024-06-21 16:28:04,451 INFO L125 PetriNetUnfolderBase]: For 961905/961905 co-relation queries the response was YES. [2024-06-21 16:28:04,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24709 conditions, 2795 events. 1461/2795 cut-off events. For 961905/961905 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 19643 event pairs, 121 based on Foata normal form. 2/2792 useless extension candidates. Maximal degree in co-relation 24420. Up to 2464 conditions per place. [2024-06-21 16:28:04,508 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 652 selfloop transitions, 59 changer transitions 0/714 dead transitions. [2024-06-21 16:28:04,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 685 places, 714 transitions, 10147 flow [2024-06-21 16:28:04,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:28:04,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:28:04,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-21 16:28:04,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 16:28:04,509 INFO L175 Difference]: Start difference. First operand has 675 places, 701 transitions, 8625 flow. Second operand 11 states and 132 transitions. [2024-06-21 16:28:04,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 685 places, 714 transitions, 10147 flow [2024-06-21 16:28:09,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 677 places, 714 transitions, 9962 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-21 16:28:09,694 INFO L231 Difference]: Finished difference. Result has 678 places, 702 transitions, 8638 flow [2024-06-21 16:28:09,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8440, PETRI_DIFFERENCE_MINUEND_PLACES=667, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=642, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8638, PETRI_PLACES=678, PETRI_TRANSITIONS=702} [2024-06-21 16:28:09,695 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 647 predicate places. [2024-06-21 16:28:09,695 INFO L495 AbstractCegarLoop]: Abstraction has has 678 places, 702 transitions, 8638 flow [2024-06-21 16:28:09,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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) [2024-06-21 16:28:09,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:28:09,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:28:09,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-21 16:28:09,695 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:28:09,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:28:09,696 INFO L85 PathProgramCache]: Analyzing trace with hash 765966573, now seen corresponding path program 20 times [2024-06-21 16:28:09,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:28:09,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475798384] [2024-06-21 16:28:09,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:28:09,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:28:09,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:28:10,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:28:10,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:28:10,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475798384] [2024-06-21 16:28:10,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475798384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:28:10,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:28:10,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:28:10,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250270882] [2024-06-21 16:28:10,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:28:10,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:28:10,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:28:10,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:28:10,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:28:11,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:28:11,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 678 places, 702 transitions, 8638 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:28:11,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:28:11,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:28:11,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:28:12,160 INFO L124 PetriNetUnfolderBase]: 1459/2792 cut-off events. [2024-06-21 16:28:12,160 INFO L125 PetriNetUnfolderBase]: For 921975/921975 co-relation queries the response was YES. [2024-06-21 16:28:12,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24376 conditions, 2792 events. 1459/2792 cut-off events. For 921975/921975 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 19609 event pairs, 229 based on Foata normal form. 1/2791 useless extension candidates. Maximal degree in co-relation 24086. Up to 2544 conditions per place. [2024-06-21 16:28:12,212 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 671 selfloop transitions, 39 changer transitions 0/713 dead transitions. [2024-06-21 16:28:12,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 688 places, 713 transitions, 10514 flow [2024-06-21 16:28:12,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:28:12,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:28:12,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-21 16:28:12,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 16:28:12,213 INFO L175 Difference]: Start difference. First operand has 678 places, 702 transitions, 8638 flow. Second operand 11 states and 132 transitions. [2024-06-21 16:28:12,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 688 places, 713 transitions, 10514 flow [2024-06-21 16:28:16,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 679 places, 713 transitions, 10326 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-21 16:28:16,893 INFO L231 Difference]: Finished difference. Result has 680 places, 702 transitions, 8540 flow [2024-06-21 16:28:16,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8450, PETRI_DIFFERENCE_MINUEND_PLACES=669, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=663, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8540, PETRI_PLACES=680, PETRI_TRANSITIONS=702} [2024-06-21 16:28:16,893 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 649 predicate places. [2024-06-21 16:28:16,893 INFO L495 AbstractCegarLoop]: Abstraction has has 680 places, 702 transitions, 8540 flow [2024-06-21 16:28:16,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:28:16,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:28:16,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:28:16,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-21 16:28:16,894 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:28:16,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:28:16,894 INFO L85 PathProgramCache]: Analyzing trace with hash 757038852, now seen corresponding path program 23 times [2024-06-21 16:28:16,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:28:16,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974657537] [2024-06-21 16:28:16,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:28:16,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:28:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:28:18,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:28:18,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:28:18,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974657537] [2024-06-21 16:28:18,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974657537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:28:18,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:28:18,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:28:18,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626355287] [2024-06-21 16:28:18,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:28:18,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:28:18,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:28:18,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:28:18,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:28:18,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:28:18,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 680 places, 702 transitions, 8540 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:28:18,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:28:18,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:28:18,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:28:19,955 INFO L124 PetriNetUnfolderBase]: 1456/2787 cut-off events. [2024-06-21 16:28:19,955 INFO L125 PetriNetUnfolderBase]: For 903903/903903 co-relation queries the response was YES. [2024-06-21 16:28:20,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23764 conditions, 2787 events. 1456/2787 cut-off events. For 903903/903903 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 19562 event pairs, 226 based on Foata normal form. 2/2787 useless extension candidates. Maximal degree in co-relation 23473. Up to 2555 conditions per place. [2024-06-21 16:28:20,011 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 690 selfloop transitions, 22 changer transitions 0/715 dead transitions. [2024-06-21 16:28:20,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 691 places, 715 transitions, 9992 flow [2024-06-21 16:28:20,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:28:20,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:28:20,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-21 16:28:20,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-21 16:28:20,013 INFO L175 Difference]: Start difference. First operand has 680 places, 702 transitions, 8540 flow. Second operand 12 states and 138 transitions. [2024-06-21 16:28:20,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 691 places, 715 transitions, 9992 flow [2024-06-21 16:28:25,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 681 places, 715 transitions, 9864 flow, removed 34 selfloop flow, removed 10 redundant places. [2024-06-21 16:28:25,129 INFO L231 Difference]: Finished difference. Result has 682 places, 702 transitions, 8460 flow [2024-06-21 16:28:25,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8412, PETRI_DIFFERENCE_MINUEND_PLACES=670, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=680, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8460, PETRI_PLACES=682, PETRI_TRANSITIONS=702} [2024-06-21 16:28:25,129 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 651 predicate places. [2024-06-21 16:28:25,129 INFO L495 AbstractCegarLoop]: Abstraction has has 682 places, 702 transitions, 8460 flow [2024-06-21 16:28:25,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:28:25,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:28:25,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:28:25,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-21 16:28:25,130 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:28:25,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:28:25,130 INFO L85 PathProgramCache]: Analyzing trace with hash 756762363, now seen corresponding path program 21 times [2024-06-21 16:28:25,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:28:25,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054316323] [2024-06-21 16:28:25,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:28:25,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:28:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:28:26,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:28:26,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:28:26,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054316323] [2024-06-21 16:28:26,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054316323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:28:26,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:28:26,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:28:26,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185463096] [2024-06-21 16:28:26,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:28:26,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:28:26,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:28:26,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:28:26,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:28:26,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:28:26,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 682 places, 702 transitions, 8460 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:28:26,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:28:26,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:28:26,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:28:27,716 INFO L124 PetriNetUnfolderBase]: 1454/2784 cut-off events. [2024-06-21 16:28:27,716 INFO L125 PetriNetUnfolderBase]: For 848358/848358 co-relation queries the response was YES. [2024-06-21 16:28:27,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23373 conditions, 2784 events. 1454/2784 cut-off events. For 848358/848358 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 19588 event pairs, 230 based on Foata normal form. 1/2783 useless extension candidates. Maximal degree in co-relation 23083. Up to 2537 conditions per place. [2024-06-21 16:28:27,773 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 671 selfloop transitions, 39 changer transitions 0/713 dead transitions. [2024-06-21 16:28:27,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 693 places, 713 transitions, 9904 flow [2024-06-21 16:28:27,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:28:27,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:28:27,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-21 16:28:27,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-21 16:28:27,775 INFO L175 Difference]: Start difference. First operand has 682 places, 702 transitions, 8460 flow. Second operand 12 states and 140 transitions. [2024-06-21 16:28:27,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 693 places, 713 transitions, 9904 flow [2024-06-21 16:28:32,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 680 places, 713 transitions, 9761 flow, removed 25 selfloop flow, removed 13 redundant places. [2024-06-21 16:28:32,346 INFO L231 Difference]: Finished difference. Result has 681 places, 702 transitions, 8400 flow [2024-06-21 16:28:32,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8317, PETRI_DIFFERENCE_MINUEND_PLACES=669, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=663, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8400, PETRI_PLACES=681, PETRI_TRANSITIONS=702} [2024-06-21 16:28:32,347 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 650 predicate places. [2024-06-21 16:28:32,347 INFO L495 AbstractCegarLoop]: Abstraction has has 681 places, 702 transitions, 8400 flow [2024-06-21 16:28:32,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:28:32,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:28:32,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:28:32,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-21 16:28:32,348 INFO L420 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:28:32,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:28:32,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1725523190, now seen corresponding path program 24 times [2024-06-21 16:28:32,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:28:32,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510651683] [2024-06-21 16:28:32,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:28:32,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:28:32,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:28:33,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:28:33,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:28:33,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510651683] [2024-06-21 16:28:33,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510651683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:28:33,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:28:33,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:28:33,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990490767] [2024-06-21 16:28:33,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:28:33,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:28:33,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:28:33,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:28:33,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:28:33,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:28:33,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 681 places, 702 transitions, 8400 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:28:33,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:28:33,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:28:33,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:28:34,780 INFO L124 PetriNetUnfolderBase]: 1465/2805 cut-off events. [2024-06-21 16:28:34,780 INFO L125 PetriNetUnfolderBase]: For 927784/927784 co-relation queries the response was YES. [2024-06-21 16:28:34,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23944 conditions, 2805 events. 1465/2805 cut-off events. For 927784/927784 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 19711 event pairs, 129 based on Foata normal form. 2/2801 useless extension candidates. Maximal degree in co-relation 23656. Up to 2357 conditions per place. [2024-06-21 16:28:34,835 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 615 selfloop transitions, 101 changer transitions 0/719 dead transitions. [2024-06-21 16:28:34,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 692 places, 719 transitions, 10381 flow [2024-06-21 16:28:34,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:28:34,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:28:34,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-21 16:28:34,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 16:28:34,836 INFO L175 Difference]: Start difference. First operand has 681 places, 702 transitions, 8400 flow. Second operand 12 states and 156 transitions. [2024-06-21 16:28:34,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 692 places, 719 transitions, 10381 flow [2024-06-21 16:28:39,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 681 places, 719 transitions, 10290 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-21 16:28:39,715 INFO L231 Difference]: Finished difference. Result has 682 places, 705 transitions, 8602 flow [2024-06-21 16:28:39,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8309, PETRI_DIFFERENCE_MINUEND_PLACES=670, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8602, PETRI_PLACES=682, PETRI_TRANSITIONS=705} [2024-06-21 16:28:39,715 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 651 predicate places. [2024-06-21 16:28:39,715 INFO L495 AbstractCegarLoop]: Abstraction has has 682 places, 705 transitions, 8602 flow [2024-06-21 16:28:39,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:28:39,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:28:39,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:28:39,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-21 16:28:39,716 INFO L420 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:28:39,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:28:39,716 INFO L85 PathProgramCache]: Analyzing trace with hash -60479228, now seen corresponding path program 25 times [2024-06-21 16:28:39,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:28:39,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686377037] [2024-06-21 16:28:39,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:28:39,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:28:39,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:28:41,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:28:41,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:28:41,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686377037] [2024-06-21 16:28:41,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686377037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:28:41,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:28:41,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:28:41,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430933951] [2024-06-21 16:28:41,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:28:41,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:28:41,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:28:41,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:28:41,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:28:41,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:28:41,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 682 places, 705 transitions, 8602 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:28:41,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:28:41,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:28:41,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:28:42,288 INFO L124 PetriNetUnfolderBase]: 1472/2818 cut-off events. [2024-06-21 16:28:42,288 INFO L125 PetriNetUnfolderBase]: For 937869/937869 co-relation queries the response was YES. [2024-06-21 16:28:42,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24240 conditions, 2818 events. 1472/2818 cut-off events. For 937869/937869 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 19866 event pairs, 131 based on Foata normal form. 2/2814 useless extension candidates. Maximal degree in co-relation 23951. Up to 2143 conditions per place. [2024-06-21 16:28:42,344 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 537 selfloop transitions, 180 changer transitions 0/720 dead transitions. [2024-06-21 16:28:42,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 693 places, 720 transitions, 10118 flow [2024-06-21 16:28:42,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:28:42,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:28:42,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-21 16:28:42,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-21 16:28:42,346 INFO L175 Difference]: Start difference. First operand has 682 places, 705 transitions, 8602 flow. Second operand 12 states and 153 transitions. [2024-06-21 16:28:42,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 693 places, 720 transitions, 10118 flow [2024-06-21 16:28:47,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 688 places, 720 transitions, 9840 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-21 16:28:47,052 INFO L231 Difference]: Finished difference. Result has 690 places, 708 transitions, 8753 flow [2024-06-21 16:28:47,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8324, PETRI_DIFFERENCE_MINUEND_PLACES=677, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8753, PETRI_PLACES=690, PETRI_TRANSITIONS=708} [2024-06-21 16:28:47,053 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 659 predicate places. [2024-06-21 16:28:47,053 INFO L495 AbstractCegarLoop]: Abstraction has has 690 places, 708 transitions, 8753 flow [2024-06-21 16:28:47,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:28:47,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:28:47,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:28:47,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-21 16:28:47,054 INFO L420 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:28:47,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:28:47,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1974605090, now seen corresponding path program 26 times [2024-06-21 16:28:47,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:28:47,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263573346] [2024-06-21 16:28:47,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:28:47,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:28:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:28:48,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:28:48,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:28:48,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263573346] [2024-06-21 16:28:48,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263573346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:28:48,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:28:48,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:28:48,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012434551] [2024-06-21 16:28:48,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:28:48,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:28:48,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:28:48,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:28:48,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:28:48,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:28:48,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 690 places, 708 transitions, 8753 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:28:48,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:28:48,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:28:48,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:28:49,692 INFO L124 PetriNetUnfolderBase]: 1479/2831 cut-off events. [2024-06-21 16:28:49,692 INFO L125 PetriNetUnfolderBase]: For 946298/946298 co-relation queries the response was YES. [2024-06-21 16:28:49,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24605 conditions, 2831 events. 1479/2831 cut-off events. For 946298/946298 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 19941 event pairs, 131 based on Foata normal form. 2/2827 useless extension candidates. Maximal degree in co-relation 24313. Up to 2410 conditions per place. [2024-06-21 16:28:49,740 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 619 selfloop transitions, 101 changer transitions 0/723 dead transitions. [2024-06-21 16:28:49,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 701 places, 723 transitions, 10285 flow [2024-06-21 16:28:49,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:28:49,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:28:49,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-21 16:28:49,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-21 16:28:49,741 INFO L175 Difference]: Start difference. First operand has 690 places, 708 transitions, 8753 flow. Second operand 12 states and 152 transitions. [2024-06-21 16:28:49,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 701 places, 723 transitions, 10285 flow [2024-06-21 16:28:54,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 692 places, 723 transitions, 9878 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-21 16:28:54,566 INFO L231 Difference]: Finished difference. Result has 694 places, 711 transitions, 8627 flow [2024-06-21 16:28:54,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8348, PETRI_DIFFERENCE_MINUEND_PLACES=681, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=708, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=607, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8627, PETRI_PLACES=694, PETRI_TRANSITIONS=711} [2024-06-21 16:28:54,567 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 663 predicate places. [2024-06-21 16:28:54,567 INFO L495 AbstractCegarLoop]: Abstraction has has 694 places, 711 transitions, 8627 flow [2024-06-21 16:28:54,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:28:54,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:28:54,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:28:54,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2024-06-21 16:28:54,568 INFO L420 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:28:54,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:28:54,568 INFO L85 PathProgramCache]: Analyzing trace with hash -858133893, now seen corresponding path program 22 times [2024-06-21 16:28:54,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:28:54,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947629728] [2024-06-21 16:28:54,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:28:54,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:28:54,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:28:56,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:28:56,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:28:56,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947629728] [2024-06-21 16:28:56,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947629728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:28:56,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:28:56,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:28:56,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131019579] [2024-06-21 16:28:56,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:28:56,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:28:56,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:28:56,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:28:56,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:28:56,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:28:56,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 694 places, 711 transitions, 8627 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:28:56,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:28:56,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:28:56,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:28:57,655 INFO L124 PetriNetUnfolderBase]: 1482/2832 cut-off events. [2024-06-21 16:28:57,656 INFO L125 PetriNetUnfolderBase]: For 934474/934474 co-relation queries the response was YES. [2024-06-21 16:28:57,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24436 conditions, 2832 events. 1482/2832 cut-off events. For 934474/934474 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 19983 event pairs, 125 based on Foata normal form. 1/2827 useless extension candidates. Maximal degree in co-relation 24142. Up to 2427 conditions per place. [2024-06-21 16:28:57,711 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 626 selfloop transitions, 96 changer transitions 0/725 dead transitions. [2024-06-21 16:28:57,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 705 places, 725 transitions, 10165 flow [2024-06-21 16:28:57,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:28:57,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:28:57,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-21 16:28:57,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-21 16:28:57,712 INFO L175 Difference]: Start difference. First operand has 694 places, 711 transitions, 8627 flow. Second operand 12 states and 150 transitions. [2024-06-21 16:28:57,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 705 places, 725 transitions, 10165 flow [2024-06-21 16:29:02,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 697 places, 725 transitions, 9940 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-21 16:29:02,105 INFO L231 Difference]: Finished difference. Result has 698 places, 714 transitions, 8673 flow [2024-06-21 16:29:02,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8403, PETRI_DIFFERENCE_MINUEND_PLACES=686, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=711, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=616, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8673, PETRI_PLACES=698, PETRI_TRANSITIONS=714} [2024-06-21 16:29:02,105 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 667 predicate places. [2024-06-21 16:29:02,106 INFO L495 AbstractCegarLoop]: Abstraction has has 698 places, 714 transitions, 8673 flow [2024-06-21 16:29:02,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:29:02,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:29:02,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:29:02,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2024-06-21 16:29:02,106 INFO L420 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:29:02,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:29:02,107 INFO L85 PathProgramCache]: Analyzing trace with hash -850782243, now seen corresponding path program 23 times [2024-06-21 16:29:02,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:29:02,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379500538] [2024-06-21 16:29:02,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:29:02,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:29:02,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:29:03,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:29:03,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:29:03,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379500538] [2024-06-21 16:29:03,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379500538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:29:03,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:29:03,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:29:03,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732403952] [2024-06-21 16:29:03,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:29:03,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:29:03,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:29:03,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:29:03,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:29:03,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:29:03,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 698 places, 714 transitions, 8673 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:29:03,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:29:03,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:29:03,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:29:04,742 INFO L124 PetriNetUnfolderBase]: 1480/2829 cut-off events. [2024-06-21 16:29:04,742 INFO L125 PetriNetUnfolderBase]: For 917729/917729 co-relation queries the response was YES. [2024-06-21 16:29:04,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24152 conditions, 2829 events. 1480/2829 cut-off events. For 917729/917729 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 19897 event pairs, 125 based on Foata normal form. 1/2824 useless extension candidates. Maximal degree in co-relation 23857. Up to 2424 conditions per place. [2024-06-21 16:29:04,799 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 624 selfloop transitions, 99 changer transitions 0/726 dead transitions. [2024-06-21 16:29:04,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 709 places, 726 transitions, 10158 flow [2024-06-21 16:29:04,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:29:04,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:29:04,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-21 16:29:04,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-21 16:29:04,800 INFO L175 Difference]: Start difference. First operand has 698 places, 714 transitions, 8673 flow. Second operand 12 states and 149 transitions. [2024-06-21 16:29:04,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 709 places, 726 transitions, 10158 flow [2024-06-21 16:29:09,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 701 places, 726 transitions, 9876 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-21 16:29:09,807 INFO L231 Difference]: Finished difference. Result has 702 places, 715 transitions, 8609 flow [2024-06-21 16:29:09,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8397, PETRI_DIFFERENCE_MINUEND_PLACES=690, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=714, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=616, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8609, PETRI_PLACES=702, PETRI_TRANSITIONS=715} [2024-06-21 16:29:09,808 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 671 predicate places. [2024-06-21 16:29:09,808 INFO L495 AbstractCegarLoop]: Abstraction has has 702 places, 715 transitions, 8609 flow [2024-06-21 16:29:09,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:29:09,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:29:09,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:29:09,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2024-06-21 16:29:09,808 INFO L420 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:29:09,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:29:09,809 INFO L85 PathProgramCache]: Analyzing trace with hash -857924364, now seen corresponding path program 27 times [2024-06-21 16:29:09,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:29:09,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985180601] [2024-06-21 16:29:09,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:29:09,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:29:09,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:29:11,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:29:11,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:29:11,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985180601] [2024-06-21 16:29:11,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985180601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:29:11,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:29:11,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:29:11,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536953841] [2024-06-21 16:29:11,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:29:11,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:29:11,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:29:11,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:29:11,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:29:11,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:29:11,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 702 places, 715 transitions, 8609 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:29:11,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:29:11,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:29:11,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:29:12,246 INFO L124 PetriNetUnfolderBase]: 1484/2837 cut-off events. [2024-06-21 16:29:12,246 INFO L125 PetriNetUnfolderBase]: For 950747/950747 co-relation queries the response was YES. [2024-06-21 16:29:12,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24209 conditions, 2837 events. 1484/2837 cut-off events. For 950747/950747 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 19984 event pairs, 119 based on Foata normal form. 2/2834 useless extension candidates. Maximal degree in co-relation 23913. Up to 2488 conditions per place. [2024-06-21 16:29:12,304 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 653 selfloop transitions, 72 changer transitions 0/728 dead transitions. [2024-06-21 16:29:12,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 713 places, 728 transitions, 10129 flow [2024-06-21 16:29:12,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:29:12,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:29:12,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-21 16:29:12,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-21 16:29:12,305 INFO L175 Difference]: Start difference. First operand has 702 places, 715 transitions, 8609 flow. Second operand 12 states and 148 transitions. [2024-06-21 16:29:12,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 713 places, 728 transitions, 10129 flow [2024-06-21 16:29:17,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 705 places, 728 transitions, 9943 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-21 16:29:17,208 INFO L231 Difference]: Finished difference. Result has 706 places, 716 transitions, 8617 flow [2024-06-21 16:29:17,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8423, PETRI_DIFFERENCE_MINUEND_PLACES=694, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=715, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=643, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8617, PETRI_PLACES=706, PETRI_TRANSITIONS=716} [2024-06-21 16:29:17,209 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 675 predicate places. [2024-06-21 16:29:17,209 INFO L495 AbstractCegarLoop]: Abstraction has has 706 places, 716 transitions, 8617 flow [2024-06-21 16:29:17,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:29:17,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:29:17,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:29:17,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2024-06-21 16:29:17,210 INFO L420 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:29:17,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:29:17,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1725246701, now seen corresponding path program 24 times [2024-06-21 16:29:17,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:29:17,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924570793] [2024-06-21 16:29:17,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:29:17,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:29:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:29:18,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:29:18,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:29:18,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924570793] [2024-06-21 16:29:18,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924570793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:29:18,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:29:18,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:29:18,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786191609] [2024-06-21 16:29:18,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:29:18,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:29:18,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:29:18,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:29:18,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:29:18,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:29:18,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 706 places, 716 transitions, 8617 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:29:18,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:29:18,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:29:18,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:29:19,561 INFO L124 PetriNetUnfolderBase]: 1482/2834 cut-off events. [2024-06-21 16:29:19,561 INFO L125 PetriNetUnfolderBase]: For 909410/909410 co-relation queries the response was YES. [2024-06-21 16:29:19,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23953 conditions, 2834 events. 1482/2834 cut-off events. For 909410/909410 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 20005 event pairs, 125 based on Foata normal form. 1/2829 useless extension candidates. Maximal degree in co-relation 23656. Up to 2387 conditions per place. [2024-06-21 16:29:19,610 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 612 selfloop transitions, 112 changer transitions 0/727 dead transitions. [2024-06-21 16:29:19,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 717 places, 727 transitions, 10089 flow [2024-06-21 16:29:19,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:29:19,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:29:19,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-21 16:29:19,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4036458333333333 [2024-06-21 16:29:19,611 INFO L175 Difference]: Start difference. First operand has 706 places, 716 transitions, 8617 flow. Second operand 12 states and 155 transitions. [2024-06-21 16:29:19,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 717 places, 727 transitions, 10089 flow [2024-06-21 16:29:24,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 707 places, 727 transitions, 9853 flow, removed 41 selfloop flow, removed 10 redundant places. [2024-06-21 16:29:24,085 INFO L231 Difference]: Finished difference. Result has 708 places, 716 transitions, 8610 flow [2024-06-21 16:29:24,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8381, PETRI_DIFFERENCE_MINUEND_PLACES=696, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=716, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=604, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8610, PETRI_PLACES=708, PETRI_TRANSITIONS=716} [2024-06-21 16:29:24,086 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 677 predicate places. [2024-06-21 16:29:24,086 INFO L495 AbstractCegarLoop]: Abstraction has has 708 places, 716 transitions, 8610 flow [2024-06-21 16:29:24,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:29:24,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:29:24,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:29:24,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2024-06-21 16:29:24,086 INFO L420 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:29:24,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:29:24,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1725254420, now seen corresponding path program 28 times [2024-06-21 16:29:24,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:29:24,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756107512] [2024-06-21 16:29:24,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:29:24,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:29:24,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:29:25,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:29:25,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:29:25,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756107512] [2024-06-21 16:29:25,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756107512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:29:25,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:29:25,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:29:25,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553167954] [2024-06-21 16:29:25,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:29:25,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:29:25,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:29:25,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:29:25,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:29:25,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:29:25,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 708 places, 716 transitions, 8610 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:29:25,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:29:25,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:29:25,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:29:26,650 INFO L124 PetriNetUnfolderBase]: 1489/2847 cut-off events. [2024-06-21 16:29:26,650 INFO L125 PetriNetUnfolderBase]: For 941934/941934 co-relation queries the response was YES. [2024-06-21 16:29:26,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24050 conditions, 2847 events. 1489/2847 cut-off events. For 941934/941934 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 20121 event pairs, 125 based on Foata normal form. 2/2843 useless extension candidates. Maximal degree in co-relation 23752. Up to 2430 conditions per place. [2024-06-21 16:29:26,709 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 629 selfloop transitions, 99 changer transitions 0/731 dead transitions. [2024-06-21 16:29:26,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 719 places, 731 transitions, 10146 flow [2024-06-21 16:29:26,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:29:26,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:29:26,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-21 16:29:26,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-21 16:29:26,710 INFO L175 Difference]: Start difference. First operand has 708 places, 716 transitions, 8610 flow. Second operand 12 states and 153 transitions. [2024-06-21 16:29:26,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 719 places, 731 transitions, 10146 flow [2024-06-21 16:29:31,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 711 places, 731 transitions, 9923 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-21 16:29:31,420 INFO L231 Difference]: Finished difference. Result has 713 places, 719 transitions, 8652 flow [2024-06-21 16:29:31,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8389, PETRI_DIFFERENCE_MINUEND_PLACES=700, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=716, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=617, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8652, PETRI_PLACES=713, PETRI_TRANSITIONS=719} [2024-06-21 16:29:31,421 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 682 predicate places. [2024-06-21 16:29:31,421 INFO L495 AbstractCegarLoop]: Abstraction has has 713 places, 719 transitions, 8652 flow [2024-06-21 16:29:31,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:29:31,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:29:31,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:29:31,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2024-06-21 16:29:31,422 INFO L420 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:29:31,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:29:31,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1723316949, now seen corresponding path program 25 times [2024-06-21 16:29:31,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:29:31,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446082106] [2024-06-21 16:29:31,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:29:31,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:29:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:29:32,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:29:32,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:29:32,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446082106] [2024-06-21 16:29:32,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446082106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:29:32,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:29:32,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:29:32,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384947777] [2024-06-21 16:29:32,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:29:32,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:29:32,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:29:32,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:29:32,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:29:32,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:29:32,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 713 places, 719 transitions, 8652 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:29:32,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:29:32,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:29:32,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:29:33,914 INFO L124 PetriNetUnfolderBase]: 1487/2844 cut-off events. [2024-06-21 16:29:33,915 INFO L125 PetriNetUnfolderBase]: For 899615/899615 co-relation queries the response was YES. [2024-06-21 16:29:33,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23819 conditions, 2844 events. 1487/2844 cut-off events. For 899615/899615 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 20075 event pairs, 125 based on Foata normal form. 1/2839 useless extension candidates. Maximal degree in co-relation 23519. Up to 2439 conditions per place. [2024-06-21 16:29:33,973 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 631 selfloop transitions, 96 changer transitions 0/730 dead transitions. [2024-06-21 16:29:33,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 724 places, 730 transitions, 10130 flow [2024-06-21 16:29:33,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:29:33,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:29:33,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-21 16:29:33,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-21 16:29:33,974 INFO L175 Difference]: Start difference. First operand has 713 places, 719 transitions, 8652 flow. Second operand 12 states and 151 transitions. [2024-06-21 16:29:33,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 724 places, 730 transitions, 10130 flow [2024-06-21 16:29:38,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 715 places, 730 transitions, 9872 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-21 16:29:38,668 INFO L231 Difference]: Finished difference. Result has 716 places, 719 transitions, 8591 flow [2024-06-21 16:29:38,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8394, PETRI_DIFFERENCE_MINUEND_PLACES=704, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=719, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=623, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8591, PETRI_PLACES=716, PETRI_TRANSITIONS=719} [2024-06-21 16:29:38,669 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 685 predicate places. [2024-06-21 16:29:38,669 INFO L495 AbstractCegarLoop]: Abstraction has has 716 places, 719 transitions, 8591 flow [2024-06-21 16:29:38,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:29:38,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:29:38,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:29:38,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2024-06-21 16:29:38,669 INFO L420 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:29:38,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:29:38,670 INFO L85 PathProgramCache]: Analyzing trace with hash -60479507, now seen corresponding path program 26 times [2024-06-21 16:29:38,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:29:38,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070079273] [2024-06-21 16:29:38,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:29:38,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:29:38,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:29:40,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:29:40,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:29:40,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070079273] [2024-06-21 16:29:40,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070079273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:29:40,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:29:40,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:29:40,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939684618] [2024-06-21 16:29:40,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:29:40,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:29:40,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:29:40,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:29:40,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:29:40,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:29:40,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 716 places, 719 transitions, 8591 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:29:40,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:29:40,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:29:40,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:29:41,165 INFO L124 PetriNetUnfolderBase]: 1495/2859 cut-off events. [2024-06-21 16:29:41,165 INFO L125 PetriNetUnfolderBase]: For 932855/932855 co-relation queries the response was YES. [2024-06-21 16:29:41,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24141 conditions, 2859 events. 1495/2859 cut-off events. For 932855/932855 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 20189 event pairs, 119 based on Foata normal form. 1/2855 useless extension candidates. Maximal degree in co-relation 23840. Up to 2058 conditions per place. [2024-06-21 16:29:41,226 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 489 selfloop transitions, 244 changer transitions 0/736 dead transitions. [2024-06-21 16:29:41,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 729 places, 736 transitions, 10643 flow [2024-06-21 16:29:41,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-21 16:29:41,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-21 16:29:41,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 177 transitions. [2024-06-21 16:29:41,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3950892857142857 [2024-06-21 16:29:41,227 INFO L175 Difference]: Start difference. First operand has 716 places, 719 transitions, 8591 flow. Second operand 14 states and 177 transitions. [2024-06-21 16:29:41,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 729 places, 736 transitions, 10643 flow [2024-06-21 16:29:46,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 717 places, 736 transitions, 10406 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-21 16:29:46,304 INFO L231 Difference]: Finished difference. Result has 719 places, 723 transitions, 8967 flow [2024-06-21 16:29:46,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8354, PETRI_DIFFERENCE_MINUEND_PLACES=704, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=719, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=240, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8967, PETRI_PLACES=719, PETRI_TRANSITIONS=723} [2024-06-21 16:29:46,304 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 688 predicate places. [2024-06-21 16:29:46,305 INFO L495 AbstractCegarLoop]: Abstraction has has 719 places, 723 transitions, 8967 flow [2024-06-21 16:29:46,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:29:46,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:29:46,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:29:46,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2024-06-21 16:29:46,305 INFO L420 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:29:46,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:29:46,306 INFO L85 PathProgramCache]: Analyzing trace with hash -850515054, now seen corresponding path program 29 times [2024-06-21 16:29:46,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:29:46,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344624224] [2024-06-21 16:29:46,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:29:46,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:29:46,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:29:47,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:29:47,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:29:47,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344624224] [2024-06-21 16:29:47,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344624224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:29:47,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:29:47,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:29:47,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160351076] [2024-06-21 16:29:47,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:29:47,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:29:47,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:29:47,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:29:47,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:29:47,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:29:47,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 719 places, 723 transitions, 8967 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:29:47,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:29:47,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:29:47,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:29:49,004 INFO L124 PetriNetUnfolderBase]: 1502/2876 cut-off events. [2024-06-21 16:29:49,005 INFO L125 PetriNetUnfolderBase]: For 967294/967294 co-relation queries the response was YES. [2024-06-21 16:29:49,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24613 conditions, 2876 events. 1502/2876 cut-off events. For 967294/967294 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 20316 event pairs, 127 based on Foata normal form. 2/2872 useless extension candidates. Maximal degree in co-relation 24310. Up to 2465 conditions per place. [2024-06-21 16:29:49,063 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 637 selfloop transitions, 98 changer transitions 0/738 dead transitions. [2024-06-21 16:29:49,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 730 places, 738 transitions, 10526 flow [2024-06-21 16:29:49,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:29:49,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:29:49,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-21 16:29:49,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-21 16:29:49,064 INFO L175 Difference]: Start difference. First operand has 719 places, 723 transitions, 8967 flow. Second operand 12 states and 151 transitions. [2024-06-21 16:29:49,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 730 places, 738 transitions, 10526 flow [2024-06-21 16:29:54,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 719 places, 738 transitions, 9997 flow, removed 25 selfloop flow, removed 11 redundant places. [2024-06-21 16:29:54,537 INFO L231 Difference]: Finished difference. Result has 720 places, 726 transitions, 8703 flow [2024-06-21 16:29:54,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8438, PETRI_DIFFERENCE_MINUEND_PLACES=708, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=723, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=627, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8703, PETRI_PLACES=720, PETRI_TRANSITIONS=726} [2024-06-21 16:29:54,538 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 689 predicate places. [2024-06-21 16:29:54,538 INFO L495 AbstractCegarLoop]: Abstraction has has 720 places, 726 transitions, 8703 flow [2024-06-21 16:29:54,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:29:54,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:29:54,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:29:54,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2024-06-21 16:29:54,539 INFO L420 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:29:54,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:29:54,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1974597371, now seen corresponding path program 27 times [2024-06-21 16:29:54,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:29:54,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101428541] [2024-06-21 16:29:54,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:29:54,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:29:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:29:55,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:29:55,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:29:55,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101428541] [2024-06-21 16:29:55,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101428541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:29:55,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:29:55,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:29:55,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643136403] [2024-06-21 16:29:55,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:29:55,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:29:55,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:29:55,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:29:55,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:29:55,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:29:55,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 720 places, 726 transitions, 8703 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:29:55,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:29:55,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:29:55,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:29:57,003 INFO L124 PetriNetUnfolderBase]: 1500/2869 cut-off events. [2024-06-21 16:29:57,004 INFO L125 PetriNetUnfolderBase]: For 923617/923617 co-relation queries the response was YES. [2024-06-21 16:29:57,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24052 conditions, 2869 events. 1500/2869 cut-off events. For 923617/923617 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 20279 event pairs, 127 based on Foata normal form. 1/2864 useless extension candidates. Maximal degree in co-relation 23748. Up to 2420 conditions per place. [2024-06-21 16:29:57,073 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 616 selfloop transitions, 118 changer transitions 0/737 dead transitions. [2024-06-21 16:29:57,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 731 places, 737 transitions, 10195 flow [2024-06-21 16:29:57,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:29:57,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:29:57,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-21 16:29:57,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-21 16:29:57,074 INFO L175 Difference]: Start difference. First operand has 720 places, 726 transitions, 8703 flow. Second operand 12 states and 152 transitions. [2024-06-21 16:29:57,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 731 places, 737 transitions, 10195 flow [2024-06-21 16:30:02,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 723 places, 737 transitions, 9917 flow, removed 45 selfloop flow, removed 8 redundant places. [2024-06-21 16:30:02,060 INFO L231 Difference]: Finished difference. Result has 724 places, 726 transitions, 8666 flow [2024-06-21 16:30:02,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8425, PETRI_DIFFERENCE_MINUEND_PLACES=712, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=608, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8666, PETRI_PLACES=724, PETRI_TRANSITIONS=726} [2024-06-21 16:30:02,061 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 693 predicate places. [2024-06-21 16:30:02,061 INFO L495 AbstractCegarLoop]: Abstraction has has 724 places, 726 transitions, 8666 flow [2024-06-21 16:30:02,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:30:02,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:30:02,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:30:02,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2024-06-21 16:30:02,062 INFO L420 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:30:02,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:30:02,062 INFO L85 PathProgramCache]: Analyzing trace with hash 841913650, now seen corresponding path program 30 times [2024-06-21 16:30:02,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:30:02,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900909374] [2024-06-21 16:30:02,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:30:02,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:30:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:30:03,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:30:03,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:30:03,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900909374] [2024-06-21 16:30:03,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900909374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:30:03,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:30:03,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:30:03,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914546480] [2024-06-21 16:30:03,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:30:03,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:30:03,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:30:03,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:30:03,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:30:03,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:30:03,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 724 places, 726 transitions, 8666 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:30:03,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:30:03,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:30:03,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:30:04,716 INFO L124 PetriNetUnfolderBase]: 1533/2936 cut-off events. [2024-06-21 16:30:04,716 INFO L125 PetriNetUnfolderBase]: For 1215506/1215506 co-relation queries the response was YES. [2024-06-21 16:30:04,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26835 conditions, 2936 events. 1533/2936 cut-off events. For 1215506/1215506 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 20769 event pairs, 138 based on Foata normal form. 2/2932 useless extension candidates. Maximal degree in co-relation 26530. Up to 2315 conditions per place. [2024-06-21 16:30:04,772 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 611 selfloop transitions, 132 changer transitions 0/746 dead transitions. [2024-06-21 16:30:04,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 735 places, 746 transitions, 10804 flow [2024-06-21 16:30:04,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:30:04,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:30:04,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 161 transitions. [2024-06-21 16:30:04,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4192708333333333 [2024-06-21 16:30:04,774 INFO L175 Difference]: Start difference. First operand has 724 places, 726 transitions, 8666 flow. Second operand 12 states and 161 transitions. [2024-06-21 16:30:04,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 735 places, 746 transitions, 10804 flow [2024-06-21 16:30:10,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 723 places, 746 transitions, 10533 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-21 16:30:10,880 INFO L231 Difference]: Finished difference. Result has 724 places, 728 transitions, 8761 flow [2024-06-21 16:30:10,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8395, PETRI_DIFFERENCE_MINUEND_PLACES=712, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=595, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8761, PETRI_PLACES=724, PETRI_TRANSITIONS=728} [2024-06-21 16:30:10,881 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 693 predicate places. [2024-06-21 16:30:10,881 INFO L495 AbstractCegarLoop]: Abstraction has has 724 places, 728 transitions, 8761 flow [2024-06-21 16:30:10,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:30:10,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:30:10,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:30:10,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2024-06-21 16:30:10,881 INFO L420 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:30:10,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:30:10,882 INFO L85 PathProgramCache]: Analyzing trace with hash -60486947, now seen corresponding path program 28 times [2024-06-21 16:30:10,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:30:10,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245046468] [2024-06-21 16:30:10,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:30:10,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:30:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:30:13,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:30:13,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:30:13,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245046468] [2024-06-21 16:30:13,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245046468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:30:13,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:30:13,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:30:13,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69287234] [2024-06-21 16:30:13,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:30:13,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:30:13,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:30:13,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:30:13,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:30:13,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:30:13,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 724 places, 728 transitions, 8761 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:30:13,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:30:13,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:30:13,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:30:14,519 INFO L124 PetriNetUnfolderBase]: 1531/2933 cut-off events. [2024-06-21 16:30:14,520 INFO L125 PetriNetUnfolderBase]: For 1173380/1173380 co-relation queries the response was YES. [2024-06-21 16:30:14,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26662 conditions, 2933 events. 1531/2933 cut-off events. For 1173380/1173380 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 20766 event pairs, 142 based on Foata normal form. 1/2928 useless extension candidates. Maximal degree in co-relation 26356. Up to 2080 conditions per place. [2024-06-21 16:30:14,575 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 478 selfloop transitions, 258 changer transitions 0/739 dead transitions. [2024-06-21 16:30:14,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 735 places, 739 transitions, 10257 flow [2024-06-21 16:30:14,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:30:14,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:30:14,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-21 16:30:14,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4036458333333333 [2024-06-21 16:30:14,576 INFO L175 Difference]: Start difference. First operand has 724 places, 728 transitions, 8761 flow. Second operand 12 states and 155 transitions. [2024-06-21 16:30:14,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 735 places, 739 transitions, 10257 flow [2024-06-21 16:30:21,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 728 places, 739 transitions, 10037 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-21 16:30:21,566 INFO L231 Difference]: Finished difference. Result has 729 places, 728 transitions, 9062 flow [2024-06-21 16:30:21,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8541, PETRI_DIFFERENCE_MINUEND_PLACES=717, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=728, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9062, PETRI_PLACES=729, PETRI_TRANSITIONS=728} [2024-06-21 16:30:21,567 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 698 predicate places. [2024-06-21 16:30:21,567 INFO L495 AbstractCegarLoop]: Abstraction has has 729 places, 728 transitions, 9062 flow [2024-06-21 16:30:21,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:30:21,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:30:21,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:30:21,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2024-06-21 16:30:21,568 INFO L420 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:30:21,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:30:21,568 INFO L85 PathProgramCache]: Analyzing trace with hash -850505754, now seen corresponding path program 31 times [2024-06-21 16:30:21,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:30:21,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745355089] [2024-06-21 16:30:21,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:30:21,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:30:21,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:30:22,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:30:22,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:30:22,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745355089] [2024-06-21 16:30:22,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745355089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:30:22,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:30:22,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:30:22,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961608187] [2024-06-21 16:30:22,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:30:22,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:30:22,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:30:22,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:30:22,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:30:22,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:30:22,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 729 places, 728 transitions, 9062 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:30:22,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:30:22,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:30:22,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:30:23,880 INFO L124 PetriNetUnfolderBase]: 1564/3000 cut-off events. [2024-06-21 16:30:23,880 INFO L125 PetriNetUnfolderBase]: For 1474171/1474171 co-relation queries the response was YES. [2024-06-21 16:30:23,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29824 conditions, 3000 events. 1564/3000 cut-off events. For 1474171/1474171 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 21267 event pairs, 155 based on Foata normal form. 2/2997 useless extension candidates. Maximal degree in co-relation 29516. Up to 2505 conditions per place. [2024-06-21 16:30:23,939 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 663 selfloop transitions, 81 changer transitions 0/747 dead transitions. [2024-06-21 16:30:23,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 739 places, 747 transitions, 11230 flow [2024-06-21 16:30:23,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:30:23,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:30:23,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-21 16:30:23,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-21 16:30:23,940 INFO L175 Difference]: Start difference. First operand has 729 places, 728 transitions, 9062 flow. Second operand 11 states and 145 transitions. [2024-06-21 16:30:23,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 739 places, 747 transitions, 11230 flow [2024-06-21 16:30:30,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 727 places, 747 transitions, 10578 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-21 16:30:30,955 INFO L231 Difference]: Finished difference. Result has 728 places, 730 transitions, 8672 flow [2024-06-21 16:30:30,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8412, PETRI_DIFFERENCE_MINUEND_PLACES=717, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=728, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=648, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8672, PETRI_PLACES=728, PETRI_TRANSITIONS=730} [2024-06-21 16:30:30,956 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 697 predicate places. [2024-06-21 16:30:30,956 INFO L495 AbstractCegarLoop]: Abstraction has has 728 places, 730 transitions, 8672 flow [2024-06-21 16:30:30,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:30:30,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:30:30,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:30:30,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2024-06-21 16:30:30,956 INFO L420 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:30:30,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:30:30,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1051871493, now seen corresponding path program 29 times [2024-06-21 16:30:30,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:30:30,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581820940] [2024-06-21 16:30:30,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:30:30,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:30:30,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:30:32,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:30:32,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:30:32,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581820940] [2024-06-21 16:30:32,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581820940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:30:32,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:30:32,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:30:32,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774581114] [2024-06-21 16:30:32,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:30:32,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:30:32,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:30:32,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:30:32,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:30:32,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:30:32,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 728 places, 730 transitions, 8672 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:30:32,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:30:32,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:30:32,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:30:33,620 INFO L124 PetriNetUnfolderBase]: 1567/3005 cut-off events. [2024-06-21 16:30:33,620 INFO L125 PetriNetUnfolderBase]: For 1458652/1458652 co-relation queries the response was YES. [2024-06-21 16:30:33,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29328 conditions, 3005 events. 1567/3005 cut-off events. For 1458652/1458652 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 21264 event pairs, 161 based on Foata normal form. 1/3000 useless extension candidates. Maximal degree in co-relation 29020. Up to 2625 conditions per place. [2024-06-21 16:30:33,684 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 654 selfloop transitions, 86 changer transitions 0/743 dead transitions. [2024-06-21 16:30:33,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 739 places, 743 transitions, 10230 flow [2024-06-21 16:30:33,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:30:33,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:30:33,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-21 16:30:33,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-21 16:30:33,686 INFO L175 Difference]: Start difference. First operand has 728 places, 730 transitions, 8672 flow. Second operand 12 states and 146 transitions. [2024-06-21 16:30:33,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 739 places, 743 transitions, 10230 flow [2024-06-21 16:30:41,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 732 places, 743 transitions, 10090 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-21 16:30:41,067 INFO L231 Difference]: Finished difference. Result has 733 places, 732 transitions, 8767 flow [2024-06-21 16:30:41,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8532, PETRI_DIFFERENCE_MINUEND_PLACES=721, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=730, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=644, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8767, PETRI_PLACES=733, PETRI_TRANSITIONS=732} [2024-06-21 16:30:41,068 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 702 predicate places. [2024-06-21 16:30:41,068 INFO L495 AbstractCegarLoop]: Abstraction has has 733 places, 732 transitions, 8767 flow [2024-06-21 16:30:41,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:30:41,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:30:41,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:30:41,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2024-06-21 16:30:41,069 INFO L420 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:30:41,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:30:41,069 INFO L85 PathProgramCache]: Analyzing trace with hash -850774524, now seen corresponding path program 32 times [2024-06-21 16:30:41,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:30:41,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612915272] [2024-06-21 16:30:41,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:30:41,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:30:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:30:42,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:30:42,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:30:42,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612915272] [2024-06-21 16:30:42,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612915272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:30:42,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:30:42,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:30:42,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603439794] [2024-06-21 16:30:42,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:30:42,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:30:42,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:30:42,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:30:42,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:30:42,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:30:42,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 733 places, 732 transitions, 8767 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:30:42,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:30:42,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:30:42,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:30:43,597 INFO L124 PetriNetUnfolderBase]: 1571/3013 cut-off events. [2024-06-21 16:30:43,597 INFO L125 PetriNetUnfolderBase]: For 1498351/1498351 co-relation queries the response was YES. [2024-06-21 16:30:43,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29544 conditions, 3013 events. 1571/3013 cut-off events. For 1498351/1498351 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 21376 event pairs, 161 based on Foata normal form. 2/3009 useless extension candidates. Maximal degree in co-relation 29234. Up to 2600 conditions per place. [2024-06-21 16:30:43,659 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 645 selfloop transitions, 96 changer transitions 0/744 dead transitions. [2024-06-21 16:30:43,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 743 places, 744 transitions, 10319 flow [2024-06-21 16:30:43,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:30:43,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:30:43,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-21 16:30:43,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-21 16:30:43,660 INFO L175 Difference]: Start difference. First operand has 733 places, 732 transitions, 8767 flow. Second operand 11 states and 141 transitions. [2024-06-21 16:30:43,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 743 places, 744 transitions, 10319 flow [2024-06-21 16:30:51,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 733 places, 744 transitions, 10075 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-21 16:30:51,485 INFO L231 Difference]: Finished difference. Result has 734 places, 733 transitions, 8769 flow [2024-06-21 16:30:51,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8523, PETRI_DIFFERENCE_MINUEND_PLACES=723, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=732, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=636, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8769, PETRI_PLACES=734, PETRI_TRANSITIONS=733} [2024-06-21 16:30:51,485 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 703 predicate places. [2024-06-21 16:30:51,485 INFO L495 AbstractCegarLoop]: Abstraction has has 734 places, 733 transitions, 8769 flow [2024-06-21 16:30:51,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:30:51,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:30:51,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:30:51,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2024-06-21 16:30:51,486 INFO L420 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:30:51,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:30:51,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1974873860, now seen corresponding path program 33 times [2024-06-21 16:30:51,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:30:51,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436526712] [2024-06-21 16:30:51,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:30:51,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:30:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:30:52,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:30:52,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:30:52,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436526712] [2024-06-21 16:30:52,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436526712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:30:52,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:30:52,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:30:52,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473998116] [2024-06-21 16:30:52,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:30:52,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:30:52,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:30:52,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:30:52,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:30:53,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:30:53,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 734 places, 733 transitions, 8769 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:30:53,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:30:53,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:30:53,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:30:54,201 INFO L124 PetriNetUnfolderBase]: 1585/3039 cut-off events. [2024-06-21 16:30:54,201 INFO L125 PetriNetUnfolderBase]: For 1567551/1567551 co-relation queries the response was YES. [2024-06-21 16:30:54,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30310 conditions, 3039 events. 1585/3039 cut-off events. For 1567551/1567551 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 21622 event pairs, 162 based on Foata normal form. 2/3035 useless extension candidates. Maximal degree in co-relation 30000. Up to 2591 conditions per place. [2024-06-21 16:30:54,264 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 640 selfloop transitions, 108 changer transitions 0/751 dead transitions. [2024-06-21 16:30:54,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 745 places, 751 transitions, 10885 flow [2024-06-21 16:30:54,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:30:54,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:30:54,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-21 16:30:54,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 16:30:54,265 INFO L175 Difference]: Start difference. First operand has 734 places, 733 transitions, 8769 flow. Second operand 12 states and 156 transitions. [2024-06-21 16:30:54,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 745 places, 751 transitions, 10885 flow [2024-06-21 16:31:02,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 736 places, 751 transitions, 10659 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-21 16:31:02,389 INFO L231 Difference]: Finished difference. Result has 738 places, 737 transitions, 8898 flow [2024-06-21 16:31:02,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8543, PETRI_DIFFERENCE_MINUEND_PLACES=725, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=733, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=626, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8898, PETRI_PLACES=738, PETRI_TRANSITIONS=737} [2024-06-21 16:31:02,390 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 707 predicate places. [2024-06-21 16:31:02,390 INFO L495 AbstractCegarLoop]: Abstraction has has 738 places, 737 transitions, 8898 flow [2024-06-21 16:31:02,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:31:02,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:31:02,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:31:02,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2024-06-21 16:31:02,390 INFO L420 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:31:02,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:31:02,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1051863774, now seen corresponding path program 34 times [2024-06-21 16:31:02,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:31:02,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000361300] [2024-06-21 16:31:02,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:31:02,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:31:02,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:31:03,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:31:03,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:31:03,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000361300] [2024-06-21 16:31:03,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000361300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:31:03,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:31:03,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 16:31:03,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611284843] [2024-06-21 16:31:03,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:31:03,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 16:31:03,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:31:03,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 16:31:03,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 16:31:03,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:31:03,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 738 places, 737 transitions, 8898 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:31:03,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:31:03,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:31:03,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:31:04,992 INFO L124 PetriNetUnfolderBase]: 1572/3016 cut-off events. [2024-06-21 16:31:04,992 INFO L125 PetriNetUnfolderBase]: For 1525042/1525042 co-relation queries the response was YES. [2024-06-21 16:31:05,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27849 conditions, 3016 events. 1572/3016 cut-off events. For 1525042/1525042 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 21476 event pairs, 149 based on Foata normal form. 10/3021 useless extension candidates. Maximal degree in co-relation 27537. Up to 2645 conditions per place. [2024-06-21 16:31:05,057 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 679 selfloop transitions, 66 changer transitions 4/752 dead transitions. [2024-06-21 16:31:05,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 749 places, 752 transitions, 10486 flow [2024-06-21 16:31:05,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:31:05,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:31:05,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-21 16:31:05,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-21 16:31:05,058 INFO L175 Difference]: Start difference. First operand has 738 places, 737 transitions, 8898 flow. Second operand 12 states and 149 transitions. [2024-06-21 16:31:05,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 749 places, 752 transitions, 10486 flow [2024-06-21 16:31:11,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 742 places, 752 transitions, 10300 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-21 16:31:11,867 INFO L231 Difference]: Finished difference. Result has 743 places, 736 transitions, 8835 flow [2024-06-21 16:31:11,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8712, PETRI_DIFFERENCE_MINUEND_PLACES=731, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=737, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=671, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8835, PETRI_PLACES=743, PETRI_TRANSITIONS=736} [2024-06-21 16:31:11,867 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 712 predicate places. [2024-06-21 16:31:11,868 INFO L495 AbstractCegarLoop]: Abstraction has has 743 places, 736 transitions, 8835 flow [2024-06-21 16:31:11,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:31:11,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:31:11,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:31:11,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2024-06-21 16:31:11,868 INFO L420 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 16:31:11,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:31:11,869 INFO L85 PathProgramCache]: Analyzing trace with hash 832649920, now seen corresponding path program 35 times [2024-06-21 16:31:11,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:31:11,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786709183] [2024-06-21 16:31:11,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:31:11,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:31:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:31:12,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:31:12,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:31:12,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786709183] [2024-06-21 16:31:12,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786709183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:31:12,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:31:12,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 16:31:12,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133859142] [2024-06-21 16:31:12,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:31:12,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 16:31:12,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:31:12,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 16:31:12,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 16:31:13,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-21 16:31:13,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 743 places, 736 transitions, 8835 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:31:13,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:31:13,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-21 16:31:13,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:31:14,037 INFO L124 PetriNetUnfolderBase]: 1567/3009 cut-off events. [2024-06-21 16:31:14,037 INFO L125 PetriNetUnfolderBase]: For 1321455/1321455 co-relation queries the response was YES. [2024-06-21 16:31:14,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27396 conditions, 3009 events. 1567/3009 cut-off events. For 1321455/1321455 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 21457 event pairs, 148 based on Foata normal form. 4/3008 useless extension candidates. Maximal degree in co-relation 27082. Up to 2574 conditions per place. [2024-06-21 16:31:14,099 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 640 selfloop transitions, 105 changer transitions 0/748 dead transitions. [2024-06-21 16:31:14,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 753 places, 748 transitions, 10399 flow [2024-06-21 16:31:14,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 16:31:14,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 16:31:14,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-21 16:31:14,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-21 16:31:14,101 INFO L175 Difference]: Start difference. First operand has 743 places, 736 transitions, 8835 flow. Second operand 11 states and 144 transitions. [2024-06-21 16:31:14,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 753 places, 748 transitions, 10399 flow Killed by 15