./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:28:18,250 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:28:18,337 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:28:18,341 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:28:18,342 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:28:18,368 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:28:18,369 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:28:18,369 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:28:18,370 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:28:18,373 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:28:18,373 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:28:18,373 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:28:18,374 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:28:18,375 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:28:18,375 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:28:18,375 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:28:18,375 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:28:18,376 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:28:18,376 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:28:18,376 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:28:18,376 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:28:18,376 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:28:18,377 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:28:18,377 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:28:18,377 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:28:18,377 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:28:18,377 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:28:18,377 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:28:18,378 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:28:18,378 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:28:18,379 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:28:18,379 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:28:18,379 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:28:18,379 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:28:18,380 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:28:18,380 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:28:18,380 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:28:18,380 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:28:18,380 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:28:18,380 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:28:18,381 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:28:18,381 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:28:18,381 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:28:18,381 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:28:18,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:28:18,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:28:18,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:28:18,602 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:28:18,603 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:28:18,604 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i [2024-06-27 18:28:19,655 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:28:19,876 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:28:19,877 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i [2024-06-27 18:28:19,890 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13cdf5731/6e2e4078529246748611eb20e6bc11fb/FLAGf77a13caa [2024-06-27 18:28:19,911 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13cdf5731/6e2e4078529246748611eb20e6bc11fb [2024-06-27 18:28:19,913 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:28:19,913 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:28:19,914 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.yml/witness.yml [2024-06-27 18:28:20,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:28:20,022 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:28:20,023 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:28:20,023 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:28:20,027 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:28:20,027 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:28:19" (1/2) ... [2024-06-27 18:28:20,028 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dca8787 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:28:20, skipping insertion in model container [2024-06-27 18:28:20,028 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:28:19" (1/2) ... [2024-06-27 18:28:20,030 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@42e7300e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:28:20, skipping insertion in model container [2024-06-27 18:28:20,030 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:28:20" (2/2) ... [2024-06-27 18:28:20,031 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dca8787 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:28:20, skipping insertion in model container [2024-06-27 18:28:20,031 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:28:20" (2/2) ... [2024-06-27 18:28:20,032 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:28:20,095 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:28:20,097 INFO L97 edCorrectnessWitness]: Location invariant before [L820-L820] ((((((((((((((((! multithreaded || z$read_delayed_var == 0) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0) [2024-06-27 18:28:20,097 INFO L97 edCorrectnessWitness]: Location invariant before [L821-L821] ((((((((((((((((! multithreaded || z$read_delayed_var == 0) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0) [2024-06-27 18:28:20,097 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:28:20,097 INFO L106 edCorrectnessWitness]: ghost_update [L818-L818] multithreaded = 1; [2024-06-27 18:28:20,135 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:28:20,298 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i[996,1009] [2024-06-27 18:28:20,419 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:28:20,426 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:28:20,459 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i[996,1009] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:28:20,523 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:28:20,558 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:28:20,559 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:28:20 WrapperNode [2024-06-27 18:28:20,559 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:28:20,561 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:28:20,561 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:28:20,561 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:28:20,566 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:28:20" (1/1) ... [2024-06-27 18:28:20,604 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:28:20" (1/1) ... [2024-06-27 18:28:20,637 INFO L138 Inliner]: procedures = 174, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 111 [2024-06-27 18:28:20,638 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:28:20,639 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:28:20,639 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:28:20,639 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:28:20,648 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:28:20" (1/1) ... [2024-06-27 18:28:20,649 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:28:20" (1/1) ... [2024-06-27 18:28:20,662 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:28:20" (1/1) ... [2024-06-27 18:28:20,679 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 18:28:20,683 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:28:20" (1/1) ... [2024-06-27 18:28:20,684 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:28:20" (1/1) ... [2024-06-27 18:28:20,694 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:28:20" (1/1) ... [2024-06-27 18:28:20,702 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:28:20" (1/1) ... [2024-06-27 18:28:20,704 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:28:20" (1/1) ... [2024-06-27 18:28:20,705 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:28:20" (1/1) ... [2024-06-27 18:28:20,707 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:28:20,713 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:28:20,713 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:28:20,713 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:28:20,714 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:28:20" (1/1) ... [2024-06-27 18:28:20,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:28:20,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:28:20,740 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 18:28:20,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 18:28:20,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:28:20,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:28:20,773 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:28:20,774 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:28:20,774 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:28:20,774 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:28:20,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:28:20,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:28:20,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:28:20,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:28:20,777 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 18:28:20,910 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:28:20,912 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:28:21,229 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:28:21,229 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:28:21,373 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:28:21,373 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:28:21,377 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:28:21 BoogieIcfgContainer [2024-06-27 18:28:21,378 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:28:21,379 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:28:21,380 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:28:21,382 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:28:21,382 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:28:19" (1/4) ... [2024-06-27 18:28:21,383 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db09a7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:28:21, skipping insertion in model container [2024-06-27 18:28:21,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:28:20" (2/4) ... [2024-06-27 18:28:21,383 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db09a7f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:28:21, skipping insertion in model container [2024-06-27 18:28:21,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:28:20" (3/4) ... [2024-06-27 18:28:21,384 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db09a7f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:28:21, skipping insertion in model container [2024-06-27 18:28:21,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:28:21" (4/4) ... [2024-06-27 18:28:21,385 INFO L112 eAbstractionObserver]: Analyzing ICFG mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i [2024-06-27 18:28:21,399 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:28:21,400 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 18:28:21,400 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:28:21,442 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:28:21,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 37 transitions, 82 flow [2024-06-27 18:28:21,505 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2024-06-27 18:28:21,505 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:28:21,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-06-27 18:28:21,508 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 37 transitions, 82 flow [2024-06-27 18:28:21,511 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 35 transitions, 76 flow [2024-06-27 18:28:21,522 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:28:21,528 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;@5af4b188, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:28:21,528 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 18:28:21,533 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:28:21,533 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:28:21,533 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:28:21,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:21,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:28:21,534 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:21,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:21,538 INFO L85 PathProgramCache]: Analyzing trace with hash 315417610, now seen corresponding path program 1 times [2024-06-27 18:28:21,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:21,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191593377] [2024-06-27 18:28:21,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:21,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:21,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:22,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:22,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:22,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191593377] [2024-06-27 18:28:22,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191593377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:22,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:22,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:28:22,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12820200] [2024-06-27 18:28:22,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:22,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:28:22,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:22,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:28:22,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:28:22,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-06-27 18:28:22,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:22,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:22,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-06-27 18:28:22,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:22,563 INFO L124 PetriNetUnfolderBase]: 471/933 cut-off events. [2024-06-27 18:28:22,563 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-27 18:28:22,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1739 conditions, 933 events. 471/933 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5179 event pairs, 319 based on Foata normal form. 37/869 useless extension candidates. Maximal degree in co-relation 1728. Up to 779 conditions per place. [2024-06-27 18:28:22,573 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 30 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-06-27 18:28:22,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 167 flow [2024-06-27 18:28:22,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:28:22,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:28:22,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-06-27 18:28:22,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6936936936936937 [2024-06-27 18:28:22,586 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 76 flow. Second operand 3 states and 77 transitions. [2024-06-27 18:28:22,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 167 flow [2024-06-27 18:28:22,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:28:22,591 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 100 flow [2024-06-27 18:28:22,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2024-06-27 18:28:22,597 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-06-27 18:28:22,597 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 100 flow [2024-06-27 18:28:22,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:22,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:22,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:28:22,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:28:22,598 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:22,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:22,598 INFO L85 PathProgramCache]: Analyzing trace with hash 315418578, now seen corresponding path program 1 times [2024-06-27 18:28:22,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:22,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984523392] [2024-06-27 18:28:22,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:22,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:22,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:22,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:22,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:22,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984523392] [2024-06-27 18:28:22,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984523392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:22,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:22,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:28:22,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494353536] [2024-06-27 18:28:22,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:22,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:28:22,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:22,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:28:22,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:28:22,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2024-06-27 18:28:22,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:22,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:22,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2024-06-27 18:28:22,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:22,737 INFO L124 PetriNetUnfolderBase]: 169/402 cut-off events. [2024-06-27 18:28:22,737 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-06-27 18:28:22,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 771 conditions, 402 events. 169/402 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2143 event pairs, 96 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 759. Up to 256 conditions per place. [2024-06-27 18:28:22,740 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 23 selfloop transitions, 3 changer transitions 2/46 dead transitions. [2024-06-27 18:28:22,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 171 flow [2024-06-27 18:28:22,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:28:22,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:28:22,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-06-27 18:28:22,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7657657657657657 [2024-06-27 18:28:22,743 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 100 flow. Second operand 3 states and 85 transitions. [2024-06-27 18:28:22,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 46 transitions, 171 flow [2024-06-27 18:28:22,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 46 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:28:22,746 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 92 flow [2024-06-27 18:28:22,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2024-06-27 18:28:22,747 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-06-27 18:28:22,747 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 92 flow [2024-06-27 18:28:22,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:22,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:22,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:22,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:28:22,749 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:22,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:22,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1825445526, now seen corresponding path program 1 times [2024-06-27 18:28:22,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:22,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287703176] [2024-06-27 18:28:22,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:22,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:22,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:23,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:23,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:23,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287703176] [2024-06-27 18:28:23,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287703176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:23,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:23,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:28:23,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29984487] [2024-06-27 18:28:23,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:23,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:28:23,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:23,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:28:23,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:28:23,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-06-27 18:28:23,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:23,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:23,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-06-27 18:28:23,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:23,399 INFO L124 PetriNetUnfolderBase]: 327/671 cut-off events. [2024-06-27 18:28:23,399 INFO L125 PetriNetUnfolderBase]: For 176/176 co-relation queries the response was YES. [2024-06-27 18:28:23,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1399 conditions, 671 events. 327/671 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3505 event pairs, 145 based on Foata normal form. 2/645 useless extension candidates. Maximal degree in co-relation 1386. Up to 537 conditions per place. [2024-06-27 18:28:23,403 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 34 selfloop transitions, 6 changer transitions 0/51 dead transitions. [2024-06-27 18:28:23,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 51 transitions, 218 flow [2024-06-27 18:28:23,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:28:23,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:28:23,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-06-27 18:28:23,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6216216216216216 [2024-06-27 18:28:23,407 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 92 flow. Second operand 4 states and 92 transitions. [2024-06-27 18:28:23,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 51 transitions, 218 flow [2024-06-27 18:28:23,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 51 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:28:23,410 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 135 flow [2024-06-27 18:28:23,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=135, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2024-06-27 18:28:23,411 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2024-06-27 18:28:23,411 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 135 flow [2024-06-27 18:28:23,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:23,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:23,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:23,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:28:23,412 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:23,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:23,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1906475223, now seen corresponding path program 1 times [2024-06-27 18:28:23,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:23,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412867403] [2024-06-27 18:28:23,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:23,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:23,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:24,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:24,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:24,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412867403] [2024-06-27 18:28:24,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412867403] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:24,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:24,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:28:24,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784386973] [2024-06-27 18:28:24,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:24,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:28:24,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:24,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:28:24,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:28:24,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 18:28:24,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 135 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:24,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:24,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 18:28:24,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:24,475 INFO L124 PetriNetUnfolderBase]: 399/806 cut-off events. [2024-06-27 18:28:24,475 INFO L125 PetriNetUnfolderBase]: For 312/312 co-relation queries the response was YES. [2024-06-27 18:28:24,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1820 conditions, 806 events. 399/806 cut-off events. For 312/312 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4271 event pairs, 169 based on Foata normal form. 2/775 useless extension candidates. Maximal degree in co-relation 1805. Up to 613 conditions per place. [2024-06-27 18:28:24,480 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 49 selfloop transitions, 14 changer transitions 0/73 dead transitions. [2024-06-27 18:28:24,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 73 transitions, 362 flow [2024-06-27 18:28:24,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:28:24,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:28:24,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-06-27 18:28:24,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5945945945945946 [2024-06-27 18:28:24,484 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 135 flow. Second operand 6 states and 132 transitions. [2024-06-27 18:28:24,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 73 transitions, 362 flow [2024-06-27 18:28:24,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 73 transitions, 352 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-27 18:28:24,488 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 212 flow [2024-06-27 18:28:24,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2024-06-27 18:28:24,490 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2024-06-27 18:28:24,490 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 212 flow [2024-06-27 18:28:24,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:24,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:24,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:24,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:28:24,491 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:24,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:24,491 INFO L85 PathProgramCache]: Analyzing trace with hash 173504216, now seen corresponding path program 1 times [2024-06-27 18:28:24,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:24,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5304169] [2024-06-27 18:28:24,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:24,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:24,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:25,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:25,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:25,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5304169] [2024-06-27 18:28:25,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5304169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:25,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:25,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:28:25,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299228363] [2024-06-27 18:28:25,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:25,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:28:25,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:25,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:28:25,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:28:25,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 18:28:25,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 212 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:25,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:25,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 18:28:25,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:25,759 INFO L124 PetriNetUnfolderBase]: 395/721 cut-off events. [2024-06-27 18:28:25,759 INFO L125 PetriNetUnfolderBase]: For 642/642 co-relation queries the response was YES. [2024-06-27 18:28:25,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1948 conditions, 721 events. 395/721 cut-off events. For 642/642 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3546 event pairs, 40 based on Foata normal form. 4/712 useless extension candidates. Maximal degree in co-relation 1929. Up to 575 conditions per place. [2024-06-27 18:28:25,764 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 52 selfloop transitions, 15 changer transitions 0/77 dead transitions. [2024-06-27 18:28:25,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 77 transitions, 418 flow [2024-06-27 18:28:25,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:28:25,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:28:25,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 148 transitions. [2024-06-27 18:28:25,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-06-27 18:28:25,765 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 212 flow. Second operand 7 states and 148 transitions. [2024-06-27 18:28:25,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 77 transitions, 418 flow [2024-06-27 18:28:25,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 77 transitions, 405 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-27 18:28:25,768 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 225 flow [2024-06-27 18:28:25,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=225, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2024-06-27 18:28:25,768 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 15 predicate places. [2024-06-27 18:28:25,769 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 225 flow [2024-06-27 18:28:25,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:25,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:25,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:25,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:28:25,769 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:25,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:25,769 INFO L85 PathProgramCache]: Analyzing trace with hash 42367208, now seen corresponding path program 1 times [2024-06-27 18:28:25,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:25,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212029924] [2024-06-27 18:28:25,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:25,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:25,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:26,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:26,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:26,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212029924] [2024-06-27 18:28:26,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212029924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:26,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:26,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:28:26,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216318961] [2024-06-27 18:28:26,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:26,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:28:26,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:26,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:28:26,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:28:26,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:28:26,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 225 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:26,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:26,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:28:26,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:26,374 INFO L124 PetriNetUnfolderBase]: 464/922 cut-off events. [2024-06-27 18:28:26,375 INFO L125 PetriNetUnfolderBase]: For 918/918 co-relation queries the response was YES. [2024-06-27 18:28:26,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2429 conditions, 922 events. 464/922 cut-off events. For 918/918 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4930 event pairs, 147 based on Foata normal form. 1/892 useless extension candidates. Maximal degree in co-relation 2407. Up to 754 conditions per place. [2024-06-27 18:28:26,380 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 43 selfloop transitions, 8 changer transitions 0/59 dead transitions. [2024-06-27 18:28:26,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 361 flow [2024-06-27 18:28:26,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:28:26,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:28:26,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 91 transitions. [2024-06-27 18:28:26,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918918918918919 [2024-06-27 18:28:26,382 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 225 flow. Second operand 5 states and 91 transitions. [2024-06-27 18:28:26,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 361 flow [2024-06-27 18:28:26,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 59 transitions, 318 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 18:28:26,385 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 214 flow [2024-06-27 18:28:26,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=214, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-06-27 18:28:26,385 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 14 predicate places. [2024-06-27 18:28:26,386 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 214 flow [2024-06-27 18:28:26,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:26,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:26,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:26,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:28:26,386 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:26,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:26,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1313384271, now seen corresponding path program 1 times [2024-06-27 18:28:26,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:26,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621243758] [2024-06-27 18:28:26,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:26,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:26,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:26,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:26,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:26,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621243758] [2024-06-27 18:28:26,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621243758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:26,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:26,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:28:26,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343613344] [2024-06-27 18:28:26,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:26,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:28:26,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:26,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:28:26,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:28:26,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:28:26,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 214 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) [2024-06-27 18:28:26,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:26,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:28:26,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:27,205 INFO L124 PetriNetUnfolderBase]: 533/1031 cut-off events. [2024-06-27 18:28:27,205 INFO L125 PetriNetUnfolderBase]: For 1189/1189 co-relation queries the response was YES. [2024-06-27 18:28:27,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2720 conditions, 1031 events. 533/1031 cut-off events. For 1189/1189 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5458 event pairs, 169 based on Foata normal form. 1/995 useless extension candidates. Maximal degree in co-relation 2697. Up to 853 conditions per place. [2024-06-27 18:28:27,210 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 49 selfloop transitions, 10 changer transitions 0/66 dead transitions. [2024-06-27 18:28:27,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 66 transitions, 380 flow [2024-06-27 18:28:27,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:28:27,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:28:27,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-06-27 18:28:27,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46396396396396394 [2024-06-27 18:28:27,212 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 214 flow. Second operand 6 states and 103 transitions. [2024-06-27 18:28:27,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 66 transitions, 380 flow [2024-06-27 18:28:27,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 66 transitions, 366 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 18:28:27,215 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 237 flow [2024-06-27 18:28:27,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=237, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2024-06-27 18:28:27,215 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 17 predicate places. [2024-06-27 18:28:27,215 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 237 flow [2024-06-27 18:28:27,216 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) [2024-06-27 18:28:27,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:27,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:27,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:28:27,216 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:27,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:27,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1265307772, now seen corresponding path program 1 times [2024-06-27 18:28:27,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:27,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448000262] [2024-06-27 18:28:27,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:27,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:27,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:27,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:27,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:27,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448000262] [2024-06-27 18:28:27,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448000262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:27,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:27,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:28:27,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045062741] [2024-06-27 18:28:27,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:27,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:28:27,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:27,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:28:27,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:28:27,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:28:27,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 237 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:27,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:27,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:28:27,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:28,003 INFO L124 PetriNetUnfolderBase]: 497/960 cut-off events. [2024-06-27 18:28:28,004 INFO L125 PetriNetUnfolderBase]: For 1508/1508 co-relation queries the response was YES. [2024-06-27 18:28:28,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2702 conditions, 960 events. 497/960 cut-off events. For 1508/1508 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5044 event pairs, 121 based on Foata normal form. 1/929 useless extension candidates. Maximal degree in co-relation 2678. Up to 770 conditions per place. [2024-06-27 18:28:28,008 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 55 selfloop transitions, 13 changer transitions 0/77 dead transitions. [2024-06-27 18:28:28,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 77 transitions, 472 flow [2024-06-27 18:28:28,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:28:28,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:28:28,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 113 transitions. [2024-06-27 18:28:28,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.509009009009009 [2024-06-27 18:28:28,010 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 237 flow. Second operand 6 states and 113 transitions. [2024-06-27 18:28:28,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 77 transitions, 472 flow [2024-06-27 18:28:28,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 77 transitions, 448 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 18:28:28,013 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 307 flow [2024-06-27 18:28:28,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=307, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2024-06-27 18:28:28,016 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 21 predicate places. [2024-06-27 18:28:28,016 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 307 flow [2024-06-27 18:28:28,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:28,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:28,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:28,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:28:28,017 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:28,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:28,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1232897272, now seen corresponding path program 2 times [2024-06-27 18:28:28,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:28,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585603237] [2024-06-27 18:28:28,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:28,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:28,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:28,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:28,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:28,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585603237] [2024-06-27 18:28:28,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585603237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:28,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:28,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:28:28,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939941832] [2024-06-27 18:28:28,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:28,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:28:28,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:28,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:28:28,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:28:28,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:28:28,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 307 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:28,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:28,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:28:28,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:28,778 INFO L124 PetriNetUnfolderBase]: 504/988 cut-off events. [2024-06-27 18:28:28,779 INFO L125 PetriNetUnfolderBase]: For 1989/1989 co-relation queries the response was YES. [2024-06-27 18:28:28,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2960 conditions, 988 events. 504/988 cut-off events. For 1989/1989 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5300 event pairs, 160 based on Foata normal form. 1/957 useless extension candidates. Maximal degree in co-relation 2933. Up to 808 conditions per place. [2024-06-27 18:28:28,784 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 52 selfloop transitions, 10 changer transitions 0/71 dead transitions. [2024-06-27 18:28:28,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 71 transitions, 465 flow [2024-06-27 18:28:28,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:28:28,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:28:28,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-27 18:28:28,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-27 18:28:28,788 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 307 flow. Second operand 6 states and 106 transitions. [2024-06-27 18:28:28,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 71 transitions, 465 flow [2024-06-27 18:28:28,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 71 transitions, 457 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-27 18:28:28,794 INFO L231 Difference]: Finished difference. Result has 67 places, 57 transitions, 324 flow [2024-06-27 18:28:28,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=324, PETRI_PLACES=67, PETRI_TRANSITIONS=57} [2024-06-27 18:28:28,795 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 26 predicate places. [2024-06-27 18:28:28,795 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 57 transitions, 324 flow [2024-06-27 18:28:28,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:28,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:28,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:28,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:28:28,797 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:28,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:28,797 INFO L85 PathProgramCache]: Analyzing trace with hash 2060207591, now seen corresponding path program 1 times [2024-06-27 18:28:28,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:28,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471957985] [2024-06-27 18:28:28,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:28,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:29,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:29,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:29,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471957985] [2024-06-27 18:28:29,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471957985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:29,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:29,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:28:29,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545553210] [2024-06-27 18:28:29,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:29,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:28:29,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:29,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:28:29,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:28:29,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:28:29,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 57 transitions, 324 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 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) [2024-06-27 18:28:29,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:29,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:28:29,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:29,752 INFO L124 PetriNetUnfolderBase]: 539/1010 cut-off events. [2024-06-27 18:28:29,752 INFO L125 PetriNetUnfolderBase]: For 2354/2354 co-relation queries the response was YES. [2024-06-27 18:28:29,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3125 conditions, 1010 events. 539/1010 cut-off events. For 2354/2354 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5258 event pairs, 161 based on Foata normal form. 3/983 useless extension candidates. Maximal degree in co-relation 3095. Up to 830 conditions per place. [2024-06-27 18:28:29,758 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 61 selfloop transitions, 14 changer transitions 0/82 dead transitions. [2024-06-27 18:28:29,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 82 transitions, 540 flow [2024-06-27 18:28:29,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:28:29,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:28:29,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-27 18:28:29,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671814671814672 [2024-06-27 18:28:29,760 INFO L175 Difference]: Start difference. First operand has 67 places, 57 transitions, 324 flow. Second operand 7 states and 121 transitions. [2024-06-27 18:28:29,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 82 transitions, 540 flow [2024-06-27 18:28:29,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 82 transitions, 517 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 18:28:29,765 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 348 flow [2024-06-27 18:28:29,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=348, PETRI_PLACES=70, PETRI_TRANSITIONS=59} [2024-06-27 18:28:29,767 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 29 predicate places. [2024-06-27 18:28:29,767 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 348 flow [2024-06-27 18:28:29,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 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) [2024-06-27 18:28:29,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:29,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:29,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:28:29,767 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:29,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:29,768 INFO L85 PathProgramCache]: Analyzing trace with hash -764084819, now seen corresponding path program 1 times [2024-06-27 18:28:29,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:29,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862930565] [2024-06-27 18:28:29,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:29,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:29,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:30,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:30,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:30,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862930565] [2024-06-27 18:28:30,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862930565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:30,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:30,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:28:30,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810515227] [2024-06-27 18:28:30,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:30,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:28:30,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:30,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:28:30,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:28:30,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:28:30,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 59 transitions, 348 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:30,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:30,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:28:30,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:30,720 INFO L124 PetriNetUnfolderBase]: 500/964 cut-off events. [2024-06-27 18:28:30,720 INFO L125 PetriNetUnfolderBase]: For 2561/2563 co-relation queries the response was YES. [2024-06-27 18:28:30,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3130 conditions, 964 events. 500/964 cut-off events. For 2561/2563 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5054 event pairs, 113 based on Foata normal form. 3/935 useless extension candidates. Maximal degree in co-relation 3100. Up to 775 conditions per place. [2024-06-27 18:28:30,725 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 68 selfloop transitions, 11 changer transitions 0/88 dead transitions. [2024-06-27 18:28:30,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 88 transitions, 590 flow [2024-06-27 18:28:30,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:28:30,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:28:30,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-27 18:28:30,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5019305019305019 [2024-06-27 18:28:30,727 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 348 flow. Second operand 7 states and 130 transitions. [2024-06-27 18:28:30,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 88 transitions, 590 flow [2024-06-27 18:28:30,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 88 transitions, 559 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 18:28:30,731 INFO L231 Difference]: Finished difference. Result has 72 places, 61 transitions, 360 flow [2024-06-27 18:28:30,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=360, PETRI_PLACES=72, PETRI_TRANSITIONS=61} [2024-06-27 18:28:30,732 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 31 predicate places. [2024-06-27 18:28:30,732 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 61 transitions, 360 flow [2024-06-27 18:28:30,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:30,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:30,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:30,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:28:30,733 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:30,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:30,733 INFO L85 PathProgramCache]: Analyzing trace with hash -764080169, now seen corresponding path program 2 times [2024-06-27 18:28:30,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:30,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165183900] [2024-06-27 18:28:30,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:30,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:31,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:31,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:31,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165183900] [2024-06-27 18:28:31,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165183900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:31,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:31,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:28:31,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132457742] [2024-06-27 18:28:31,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:31,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:28:31,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:31,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:28:31,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:28:31,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:28:31,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 61 transitions, 360 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:31,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:31,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:28:31,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:31,584 INFO L124 PetriNetUnfolderBase]: 514/989 cut-off events. [2024-06-27 18:28:31,584 INFO L125 PetriNetUnfolderBase]: For 3012/3014 co-relation queries the response was YES. [2024-06-27 18:28:31,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3293 conditions, 989 events. 514/989 cut-off events. For 3012/3014 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5213 event pairs, 119 based on Foata normal form. 3/960 useless extension candidates. Maximal degree in co-relation 3262. Up to 747 conditions per place. [2024-06-27 18:28:31,589 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 62 selfloop transitions, 19 changer transitions 0/90 dead transitions. [2024-06-27 18:28:31,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 90 transitions, 640 flow [2024-06-27 18:28:31,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:28:31,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:28:31,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-27 18:28:31,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5096525096525096 [2024-06-27 18:28:31,591 INFO L175 Difference]: Start difference. First operand has 72 places, 61 transitions, 360 flow. Second operand 7 states and 132 transitions. [2024-06-27 18:28:31,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 90 transitions, 640 flow [2024-06-27 18:28:31,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 90 transitions, 609 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 18:28:31,596 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 408 flow [2024-06-27 18:28:31,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=408, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2024-06-27 18:28:31,596 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 33 predicate places. [2024-06-27 18:28:31,597 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 408 flow [2024-06-27 18:28:31,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:31,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:31,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:31,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:28:31,597 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:31,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:31,598 INFO L85 PathProgramCache]: Analyzing trace with hash -764079983, now seen corresponding path program 1 times [2024-06-27 18:28:31,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:31,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691332522] [2024-06-27 18:28:31,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:31,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:31,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:32,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:32,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:32,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691332522] [2024-06-27 18:28:32,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691332522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:32,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:32,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:28:32,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067871269] [2024-06-27 18:28:32,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:32,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:28:32,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:32,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:28:32,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:28:32,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:28:32,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 408 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 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) [2024-06-27 18:28:32,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:32,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:28:32,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:32,460 INFO L124 PetriNetUnfolderBase]: 578/1087 cut-off events. [2024-06-27 18:28:32,460 INFO L125 PetriNetUnfolderBase]: For 3702/3702 co-relation queries the response was YES. [2024-06-27 18:28:32,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3714 conditions, 1087 events. 578/1087 cut-off events. For 3702/3702 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5729 event pairs, 131 based on Foata normal form. 1/1048 useless extension candidates. Maximal degree in co-relation 3682. Up to 872 conditions per place. [2024-06-27 18:28:32,466 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 72 selfloop transitions, 18 changer transitions 0/97 dead transitions. [2024-06-27 18:28:32,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 97 transitions, 712 flow [2024-06-27 18:28:32,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:28:32,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:28:32,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-27 18:28:32,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 18:28:32,468 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 408 flow. Second operand 7 states and 126 transitions. [2024-06-27 18:28:32,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 97 transitions, 712 flow [2024-06-27 18:28:32,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 97 transitions, 686 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 18:28:32,476 INFO L231 Difference]: Finished difference. Result has 79 places, 72 transitions, 477 flow [2024-06-27 18:28:32,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=477, PETRI_PLACES=79, PETRI_TRANSITIONS=72} [2024-06-27 18:28:32,477 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 38 predicate places. [2024-06-27 18:28:32,478 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 72 transitions, 477 flow [2024-06-27 18:28:32,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 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) [2024-06-27 18:28:32,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:32,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:32,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:28:32,478 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:32,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:32,479 INFO L85 PathProgramCache]: Analyzing trace with hash 435157035, now seen corresponding path program 2 times [2024-06-27 18:28:32,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:32,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343567501] [2024-06-27 18:28:32,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:32,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:32,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:32,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:32,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343567501] [2024-06-27 18:28:32,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343567501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:32,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:32,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:28:32,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110599345] [2024-06-27 18:28:32,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:32,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:28:32,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:32,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:28:32,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:28:32,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:28:32,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 72 transitions, 477 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 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) [2024-06-27 18:28:32,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:32,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:28:32,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:33,308 INFO L124 PetriNetUnfolderBase]: 589/1140 cut-off events. [2024-06-27 18:28:33,308 INFO L125 PetriNetUnfolderBase]: For 4459/4459 co-relation queries the response was YES. [2024-06-27 18:28:33,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4045 conditions, 1140 events. 589/1140 cut-off events. For 4459/4459 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6161 event pairs, 174 based on Foata normal form. 1/1099 useless extension candidates. Maximal degree in co-relation 4010. Up to 942 conditions per place. [2024-06-27 18:28:33,315 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 71 selfloop transitions, 13 changer transitions 0/91 dead transitions. [2024-06-27 18:28:33,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 91 transitions, 701 flow [2024-06-27 18:28:33,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:28:33,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:28:33,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-27 18:28:33,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44787644787644787 [2024-06-27 18:28:33,317 INFO L175 Difference]: Start difference. First operand has 79 places, 72 transitions, 477 flow. Second operand 7 states and 116 transitions. [2024-06-27 18:28:33,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 91 transitions, 701 flow [2024-06-27 18:28:33,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 91 transitions, 690 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 18:28:33,322 INFO L231 Difference]: Finished difference. Result has 84 places, 74 transitions, 515 flow [2024-06-27 18:28:33,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=515, PETRI_PLACES=84, PETRI_TRANSITIONS=74} [2024-06-27 18:28:33,323 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 43 predicate places. [2024-06-27 18:28:33,323 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 74 transitions, 515 flow [2024-06-27 18:28:33,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 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) [2024-06-27 18:28:33,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:33,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:33,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:28:33,323 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:33,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:33,324 INFO L85 PathProgramCache]: Analyzing trace with hash -558349103, now seen corresponding path program 3 times [2024-06-27 18:28:33,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:33,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027530778] [2024-06-27 18:28:33,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:33,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:33,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:33,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:33,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:33,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027530778] [2024-06-27 18:28:33,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027530778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:33,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:33,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:28:33,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435457493] [2024-06-27 18:28:33,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:33,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:28:33,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:33,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:28:33,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:28:33,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:28:33,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 74 transitions, 515 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 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) [2024-06-27 18:28:33,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:33,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:28:33,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:34,214 INFO L124 PetriNetUnfolderBase]: 587/1136 cut-off events. [2024-06-27 18:28:34,214 INFO L125 PetriNetUnfolderBase]: For 4928/4928 co-relation queries the response was YES. [2024-06-27 18:28:34,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4101 conditions, 1136 events. 587/1136 cut-off events. For 4928/4928 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6135 event pairs, 170 based on Foata normal form. 1/1095 useless extension candidates. Maximal degree in co-relation 4063. Up to 919 conditions per place. [2024-06-27 18:28:34,221 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 70 selfloop transitions, 16 changer transitions 0/93 dead transitions. [2024-06-27 18:28:34,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 93 transitions, 739 flow [2024-06-27 18:28:34,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:28:34,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:28:34,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-27 18:28:34,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:28:34,223 INFO L175 Difference]: Start difference. First operand has 84 places, 74 transitions, 515 flow. Second operand 7 states and 119 transitions. [2024-06-27 18:28:34,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 93 transitions, 739 flow [2024-06-27 18:28:34,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 93 transitions, 700 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 18:28:34,229 INFO L231 Difference]: Finished difference. Result has 86 places, 74 transitions, 513 flow [2024-06-27 18:28:34,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=513, PETRI_PLACES=86, PETRI_TRANSITIONS=74} [2024-06-27 18:28:34,230 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 45 predicate places. [2024-06-27 18:28:34,230 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 74 transitions, 513 flow [2024-06-27 18:28:34,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 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) [2024-06-27 18:28:34,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:34,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:34,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:28:34,231 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:34,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:34,231 INFO L85 PathProgramCache]: Analyzing trace with hash -558349289, now seen corresponding path program 3 times [2024-06-27 18:28:34,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:34,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466299061] [2024-06-27 18:28:34,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:34,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:34,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:34,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:34,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:34,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466299061] [2024-06-27 18:28:34,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466299061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:34,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:34,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:28:34,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328108826] [2024-06-27 18:28:34,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:34,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:28:34,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:34,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:28:34,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:28:34,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:28:34,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 74 transitions, 513 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:34,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:34,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:28:34,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:35,101 INFO L124 PetriNetUnfolderBase]: 547/1075 cut-off events. [2024-06-27 18:28:35,102 INFO L125 PetriNetUnfolderBase]: For 5214/5214 co-relation queries the response was YES. [2024-06-27 18:28:35,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3921 conditions, 1075 events. 547/1075 cut-off events. For 5214/5214 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5891 event pairs, 159 based on Foata normal form. 1/1039 useless extension candidates. Maximal degree in co-relation 3883. Up to 855 conditions per place. [2024-06-27 18:28:35,113 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 68 selfloop transitions, 12 changer transitions 0/93 dead transitions. [2024-06-27 18:28:35,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 93 transitions, 725 flow [2024-06-27 18:28:35,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:28:35,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:28:35,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-27 18:28:35,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4749034749034749 [2024-06-27 18:28:35,115 INFO L175 Difference]: Start difference. First operand has 86 places, 74 transitions, 513 flow. Second operand 7 states and 123 transitions. [2024-06-27 18:28:35,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 93 transitions, 725 flow [2024-06-27 18:28:35,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 93 transitions, 672 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 18:28:35,123 INFO L231 Difference]: Finished difference. Result has 87 places, 74 transitions, 489 flow [2024-06-27 18:28:35,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=489, PETRI_PLACES=87, PETRI_TRANSITIONS=74} [2024-06-27 18:28:35,124 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 46 predicate places. [2024-06-27 18:28:35,124 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 74 transitions, 489 flow [2024-06-27 18:28:35,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:35,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:35,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:35,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:28:35,125 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:35,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:35,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1676208639, now seen corresponding path program 1 times [2024-06-27 18:28:35,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:35,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243901449] [2024-06-27 18:28:35,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:35,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:35,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:35,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:35,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243901449] [2024-06-27 18:28:35,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243901449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:35,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:35,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:28:35,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044554728] [2024-06-27 18:28:35,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:35,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:28:35,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:35,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:28:35,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:28:36,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:28:36,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 74 transitions, 489 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 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) [2024-06-27 18:28:36,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:36,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:28:36,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:36,420 INFO L124 PetriNetUnfolderBase]: 552/1066 cut-off events. [2024-06-27 18:28:36,420 INFO L125 PetriNetUnfolderBase]: For 5576/5576 co-relation queries the response was YES. [2024-06-27 18:28:36,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3946 conditions, 1066 events. 552/1066 cut-off events. For 5576/5576 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5738 event pairs, 116 based on Foata normal form. 1/1030 useless extension candidates. Maximal degree in co-relation 3907. Up to 813 conditions per place. [2024-06-27 18:28:36,426 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 90 selfloop transitions, 15 changer transitions 0/118 dead transitions. [2024-06-27 18:28:36,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 118 transitions, 841 flow [2024-06-27 18:28:36,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:36,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:36,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-27 18:28:36,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015015015015015 [2024-06-27 18:28:36,428 INFO L175 Difference]: Start difference. First operand has 87 places, 74 transitions, 489 flow. Second operand 9 states and 167 transitions. [2024-06-27 18:28:36,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 118 transitions, 841 flow [2024-06-27 18:28:36,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 118 transitions, 806 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 18:28:36,434 INFO L231 Difference]: Finished difference. Result has 91 places, 78 transitions, 525 flow [2024-06-27 18:28:36,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=525, PETRI_PLACES=91, PETRI_TRANSITIONS=78} [2024-06-27 18:28:36,435 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 50 predicate places. [2024-06-27 18:28:36,435 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 78 transitions, 525 flow [2024-06-27 18:28:36,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 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) [2024-06-27 18:28:36,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:36,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:36,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:28:36,435 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:36,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:36,435 INFO L85 PathProgramCache]: Analyzing trace with hash 2079600290, now seen corresponding path program 1 times [2024-06-27 18:28:36,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:36,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298281086] [2024-06-27 18:28:36,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:36,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:36,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:37,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:37,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:37,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298281086] [2024-06-27 18:28:37,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298281086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:37,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:37,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:28:37,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312566301] [2024-06-27 18:28:37,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:37,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:28:37,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:37,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:28:37,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:28:37,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:28:37,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 78 transitions, 525 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:28:37,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:37,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:28:37,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:37,550 INFO L124 PetriNetUnfolderBase]: 610/1151 cut-off events. [2024-06-27 18:28:37,550 INFO L125 PetriNetUnfolderBase]: For 6272/6272 co-relation queries the response was YES. [2024-06-27 18:28:37,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4390 conditions, 1151 events. 610/1151 cut-off events. For 6272/6272 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6156 event pairs, 129 based on Foata normal form. 1/1108 useless extension candidates. Maximal degree in co-relation 4349. Up to 944 conditions per place. [2024-06-27 18:28:37,570 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 92 selfloop transitions, 13 changer transitions 0/112 dead transitions. [2024-06-27 18:28:37,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 112 transitions, 845 flow [2024-06-27 18:28:37,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:28:37,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:28:37,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-27 18:28:37,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 18:28:37,572 INFO L175 Difference]: Start difference. First operand has 91 places, 78 transitions, 525 flow. Second operand 8 states and 140 transitions. [2024-06-27 18:28:37,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 112 transitions, 845 flow [2024-06-27 18:28:37,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 112 transitions, 812 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 18:28:37,580 INFO L231 Difference]: Finished difference. Result has 93 places, 80 transitions, 543 flow [2024-06-27 18:28:37,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=543, PETRI_PLACES=93, PETRI_TRANSITIONS=80} [2024-06-27 18:28:37,580 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 52 predicate places. [2024-06-27 18:28:37,580 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 80 transitions, 543 flow [2024-06-27 18:28:37,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:28:37,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:37,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:37,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:28:37,581 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:37,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:37,581 INFO L85 PathProgramCache]: Analyzing trace with hash 2083324940, now seen corresponding path program 2 times [2024-06-27 18:28:37,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:37,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862897198] [2024-06-27 18:28:37,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:37,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:37,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:38,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:38,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:38,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862897198] [2024-06-27 18:28:38,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862897198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:38,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:38,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:28:38,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505310861] [2024-06-27 18:28:38,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:38,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:28:38,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:38,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:28:38,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:28:38,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:28:38,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 80 transitions, 543 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:28:38,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:38,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:28:38,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:38,471 INFO L124 PetriNetUnfolderBase]: 637/1160 cut-off events. [2024-06-27 18:28:38,472 INFO L125 PetriNetUnfolderBase]: For 7379/7379 co-relation queries the response was YES. [2024-06-27 18:28:38,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4681 conditions, 1160 events. 637/1160 cut-off events. For 7379/7379 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6076 event pairs, 135 based on Foata normal form. 1/1129 useless extension candidates. Maximal degree in co-relation 4639. Up to 852 conditions per place. [2024-06-27 18:28:38,478 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 80 selfloop transitions, 30 changer transitions 0/117 dead transitions. [2024-06-27 18:28:38,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 117 transitions, 981 flow [2024-06-27 18:28:38,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:28:38,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:28:38,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 18:28:38,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49324324324324326 [2024-06-27 18:28:38,479 INFO L175 Difference]: Start difference. First operand has 93 places, 80 transitions, 543 flow. Second operand 8 states and 146 transitions. [2024-06-27 18:28:38,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 117 transitions, 981 flow [2024-06-27 18:28:38,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 117 transitions, 946 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 18:28:38,489 INFO L231 Difference]: Finished difference. Result has 95 places, 86 transitions, 637 flow [2024-06-27 18:28:38,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=637, PETRI_PLACES=95, PETRI_TRANSITIONS=86} [2024-06-27 18:28:38,489 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 54 predicate places. [2024-06-27 18:28:38,490 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 86 transitions, 637 flow [2024-06-27 18:28:38,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:28:38,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:38,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:38,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:28:38,490 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:38,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:38,491 INFO L85 PathProgramCache]: Analyzing trace with hash 2083325157, now seen corresponding path program 1 times [2024-06-27 18:28:38,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:38,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001784303] [2024-06-27 18:28:38,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:38,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:38,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:39,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:39,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:39,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001784303] [2024-06-27 18:28:39,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001784303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:39,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:39,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:28:39,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007906283] [2024-06-27 18:28:39,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:39,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:28:39,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:39,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:28:39,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:28:39,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:28:39,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 86 transitions, 637 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:28:39,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:39,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:28:39,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:39,420 INFO L124 PetriNetUnfolderBase]: 699/1264 cut-off events. [2024-06-27 18:28:39,421 INFO L125 PetriNetUnfolderBase]: For 9236/9236 co-relation queries the response was YES. [2024-06-27 18:28:39,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5218 conditions, 1264 events. 699/1264 cut-off events. For 9236/9236 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6762 event pairs, 150 based on Foata normal form. 3/1232 useless extension candidates. Maximal degree in co-relation 5175. Up to 968 conditions per place. [2024-06-27 18:28:39,427 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 96 selfloop transitions, 24 changer transitions 0/127 dead transitions. [2024-06-27 18:28:39,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 127 transitions, 1047 flow [2024-06-27 18:28:39,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:28:39,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:28:39,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-27 18:28:39,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:28:39,428 INFO L175 Difference]: Start difference. First operand has 95 places, 86 transitions, 637 flow. Second operand 8 states and 148 transitions. [2024-06-27 18:28:39,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 127 transitions, 1047 flow [2024-06-27 18:28:39,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 127 transitions, 1010 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-27 18:28:39,445 INFO L231 Difference]: Finished difference. Result has 101 places, 93 transitions, 711 flow [2024-06-27 18:28:39,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=711, PETRI_PLACES=101, PETRI_TRANSITIONS=93} [2024-06-27 18:28:39,445 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 60 predicate places. [2024-06-27 18:28:39,445 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 93 transitions, 711 flow [2024-06-27 18:28:39,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:28:39,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:39,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:39,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:28:39,446 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:39,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:39,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1672399359, now seen corresponding path program 2 times [2024-06-27 18:28:39,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:39,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989640274] [2024-06-27 18:28:39,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:39,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:39,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:40,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:40,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:40,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989640274] [2024-06-27 18:28:40,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989640274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:40,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:40,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:28:40,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242843815] [2024-06-27 18:28:40,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:40,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:28:40,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:40,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:28:40,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:28:40,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:28:40,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 93 transitions, 711 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 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) [2024-06-27 18:28:40,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:40,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:28:40,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:40,665 INFO L124 PetriNetUnfolderBase]: 674/1211 cut-off events. [2024-06-27 18:28:40,665 INFO L125 PetriNetUnfolderBase]: For 10140/10140 co-relation queries the response was YES. [2024-06-27 18:28:40,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5480 conditions, 1211 events. 674/1211 cut-off events. For 10140/10140 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6336 event pairs, 101 based on Foata normal form. 1/1192 useless extension candidates. Maximal degree in co-relation 5434. Up to 921 conditions per place. [2024-06-27 18:28:40,672 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 82 selfloop transitions, 34 changer transitions 0/133 dead transitions. [2024-06-27 18:28:40,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 133 transitions, 1155 flow [2024-06-27 18:28:40,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:40,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:40,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 18:28:40,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 18:28:40,673 INFO L175 Difference]: Start difference. First operand has 101 places, 93 transitions, 711 flow. Second operand 9 states and 162 transitions. [2024-06-27 18:28:40,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 133 transitions, 1155 flow [2024-06-27 18:28:40,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 133 transitions, 1139 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 18:28:40,685 INFO L231 Difference]: Finished difference. Result has 108 places, 102 transitions, 894 flow [2024-06-27 18:28:40,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=894, PETRI_PLACES=108, PETRI_TRANSITIONS=102} [2024-06-27 18:28:40,685 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 67 predicate places. [2024-06-27 18:28:40,686 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 102 transitions, 894 flow [2024-06-27 18:28:40,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 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) [2024-06-27 18:28:40,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:40,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:40,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:28:40,686 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:40,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:40,686 INFO L85 PathProgramCache]: Analyzing trace with hash 2083319360, now seen corresponding path program 3 times [2024-06-27 18:28:40,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:40,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934114476] [2024-06-27 18:28:40,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:40,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:40,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:41,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:41,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:41,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934114476] [2024-06-27 18:28:41,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934114476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:41,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:41,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:28:41,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358150106] [2024-06-27 18:28:41,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:41,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:28:41,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:41,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:28:41,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:28:41,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:28:41,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 102 transitions, 894 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:28:41,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:41,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:28:41,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:41,641 INFO L124 PetriNetUnfolderBase]: 717/1308 cut-off events. [2024-06-27 18:28:41,641 INFO L125 PetriNetUnfolderBase]: For 11463/11463 co-relation queries the response was YES. [2024-06-27 18:28:41,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5998 conditions, 1308 events. 717/1308 cut-off events. For 11463/11463 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7066 event pairs, 151 based on Foata normal form. 1/1271 useless extension candidates. Maximal degree in co-relation 5948. Up to 978 conditions per place. [2024-06-27 18:28:41,648 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 96 selfloop transitions, 29 changer transitions 0/132 dead transitions. [2024-06-27 18:28:41,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 132 transitions, 1280 flow [2024-06-27 18:28:41,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:28:41,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:28:41,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 18:28:41,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49324324324324326 [2024-06-27 18:28:41,649 INFO L175 Difference]: Start difference. First operand has 108 places, 102 transitions, 894 flow. Second operand 8 states and 146 transitions. [2024-06-27 18:28:41,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 132 transitions, 1280 flow [2024-06-27 18:28:41,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 132 transitions, 1210 flow, removed 31 selfloop flow, removed 2 redundant places. [2024-06-27 18:28:41,662 INFO L231 Difference]: Finished difference. Result has 114 places, 102 transitions, 887 flow [2024-06-27 18:28:41,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=824, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=887, PETRI_PLACES=114, PETRI_TRANSITIONS=102} [2024-06-27 18:28:41,663 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 73 predicate places. [2024-06-27 18:28:41,663 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 102 transitions, 887 flow [2024-06-27 18:28:41,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:28:41,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:41,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:41,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:28:41,664 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:41,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:41,664 INFO L85 PathProgramCache]: Analyzing trace with hash 605262791, now seen corresponding path program 2 times [2024-06-27 18:28:41,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:41,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669364069] [2024-06-27 18:28:41,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:41,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:41,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:42,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:42,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:42,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669364069] [2024-06-27 18:28:42,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669364069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:42,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:42,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:28:42,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717500276] [2024-06-27 18:28:42,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:42,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:28:42,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:42,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:28:42,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:28:42,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:28:42,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 102 transitions, 887 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:28:42,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:42,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:28:42,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:42,563 INFO L124 PetriNetUnfolderBase]: 750/1375 cut-off events. [2024-06-27 18:28:42,563 INFO L125 PetriNetUnfolderBase]: For 13007/13007 co-relation queries the response was YES. [2024-06-27 18:28:42,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6303 conditions, 1375 events. 750/1375 cut-off events. For 13007/13007 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7616 event pairs, 206 based on Foata normal form. 3/1340 useless extension candidates. Maximal degree in co-relation 6251. Up to 1164 conditions per place. [2024-06-27 18:28:42,570 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 103 selfloop transitions, 16 changer transitions 0/126 dead transitions. [2024-06-27 18:28:42,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 126 transitions, 1197 flow [2024-06-27 18:28:42,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:28:42,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:28:42,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-27 18:28:42,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44932432432432434 [2024-06-27 18:28:42,577 INFO L175 Difference]: Start difference. First operand has 114 places, 102 transitions, 887 flow. Second operand 8 states and 133 transitions. [2024-06-27 18:28:42,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 126 transitions, 1197 flow [2024-06-27 18:28:42,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 126 transitions, 1115 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 18:28:42,589 INFO L231 Difference]: Finished difference. Result has 114 places, 104 transitions, 864 flow [2024-06-27 18:28:42,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=864, PETRI_PLACES=114, PETRI_TRANSITIONS=104} [2024-06-27 18:28:42,590 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 73 predicate places. [2024-06-27 18:28:42,590 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 104 transitions, 864 flow [2024-06-27 18:28:42,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:28:42,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:42,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:42,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:28:42,590 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:42,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:42,591 INFO L85 PathProgramCache]: Analyzing trace with hash -249745174, now seen corresponding path program 4 times [2024-06-27 18:28:42,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:42,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510019005] [2024-06-27 18:28:42,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:42,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:43,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:43,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:43,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510019005] [2024-06-27 18:28:43,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510019005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:43,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:43,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:28:43,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70036015] [2024-06-27 18:28:43,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:43,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:28:43,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:43,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:28:43,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:28:43,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:28:43,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 104 transitions, 864 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:28:43,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:43,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:28:43,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:43,558 INFO L124 PetriNetUnfolderBase]: 761/1387 cut-off events. [2024-06-27 18:28:43,558 INFO L125 PetriNetUnfolderBase]: For 13070/13070 co-relation queries the response was YES. [2024-06-27 18:28:43,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6289 conditions, 1387 events. 761/1387 cut-off events. For 13070/13070 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 7672 event pairs, 204 based on Foata normal form. 1/1351 useless extension candidates. Maximal degree in co-relation 6237. Up to 1199 conditions per place. [2024-06-27 18:28:43,565 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 106 selfloop transitions, 15 changer transitions 0/128 dead transitions. [2024-06-27 18:28:43,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 128 transitions, 1188 flow [2024-06-27 18:28:43,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:28:43,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:28:43,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-27 18:28:43,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-27 18:28:43,567 INFO L175 Difference]: Start difference. First operand has 114 places, 104 transitions, 864 flow. Second operand 8 states and 132 transitions. [2024-06-27 18:28:43,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 128 transitions, 1188 flow [2024-06-27 18:28:43,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 128 transitions, 1141 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 18:28:43,579 INFO L231 Difference]: Finished difference. Result has 116 places, 106 transitions, 880 flow [2024-06-27 18:28:43,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=880, PETRI_PLACES=116, PETRI_TRANSITIONS=106} [2024-06-27 18:28:43,579 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 75 predicate places. [2024-06-27 18:28:43,579 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 106 transitions, 880 flow [2024-06-27 18:28:43,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:28:43,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:43,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:43,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:28:43,580 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:43,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:43,580 INFO L85 PathProgramCache]: Analyzing trace with hash -120706775, now seen corresponding path program 3 times [2024-06-27 18:28:43,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:43,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476880117] [2024-06-27 18:28:43,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:43,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:44,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:44,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:44,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476880117] [2024-06-27 18:28:44,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476880117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:44,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:44,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:28:44,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091881615] [2024-06-27 18:28:44,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:44,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:28:44,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:44,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:28:44,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:28:44,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:28:44,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 106 transitions, 880 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:28:44,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:44,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:28:44,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:44,487 INFO L124 PetriNetUnfolderBase]: 794/1456 cut-off events. [2024-06-27 18:28:44,487 INFO L125 PetriNetUnfolderBase]: For 14573/14573 co-relation queries the response was YES. [2024-06-27 18:28:44,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6531 conditions, 1456 events. 794/1456 cut-off events. For 14573/14573 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8189 event pairs, 208 based on Foata normal form. 3/1417 useless extension candidates. Maximal degree in co-relation 6479. Up to 1190 conditions per place. [2024-06-27 18:28:44,493 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 108 selfloop transitions, 19 changer transitions 0/134 dead transitions. [2024-06-27 18:28:44,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 134 transitions, 1224 flow [2024-06-27 18:28:44,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:28:44,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:28:44,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-27 18:28:44,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46621621621621623 [2024-06-27 18:28:44,506 INFO L175 Difference]: Start difference. First operand has 116 places, 106 transitions, 880 flow. Second operand 8 states and 138 transitions. [2024-06-27 18:28:44,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 134 transitions, 1224 flow [2024-06-27 18:28:44,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 134 transitions, 1181 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 18:28:44,518 INFO L231 Difference]: Finished difference. Result has 118 places, 108 transitions, 904 flow [2024-06-27 18:28:44,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=837, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=904, PETRI_PLACES=118, PETRI_TRANSITIONS=108} [2024-06-27 18:28:44,518 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 77 predicate places. [2024-06-27 18:28:44,518 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 108 transitions, 904 flow [2024-06-27 18:28:44,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:28:44,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:44,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:44,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:28:44,519 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:44,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:44,519 INFO L85 PathProgramCache]: Analyzing trace with hash -257990554, now seen corresponding path program 5 times [2024-06-27 18:28:44,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:44,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489300090] [2024-06-27 18:28:44,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:44,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:44,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:45,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:45,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:45,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489300090] [2024-06-27 18:28:45,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489300090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:45,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:45,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:28:45,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116426549] [2024-06-27 18:28:45,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:45,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:28:45,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:45,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:28:45,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:28:45,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:28:45,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 108 transitions, 904 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:28:45,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:45,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:28:45,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:45,430 INFO L124 PetriNetUnfolderBase]: 805/1458 cut-off events. [2024-06-27 18:28:45,430 INFO L125 PetriNetUnfolderBase]: For 15199/15199 co-relation queries the response was YES. [2024-06-27 18:28:45,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6713 conditions, 1458 events. 805/1458 cut-off events. For 15199/15199 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8130 event pairs, 204 based on Foata normal form. 1/1421 useless extension candidates. Maximal degree in co-relation 6660. Up to 1213 conditions per place. [2024-06-27 18:28:45,439 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 106 selfloop transitions, 22 changer transitions 0/135 dead transitions. [2024-06-27 18:28:45,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 135 transitions, 1306 flow [2024-06-27 18:28:45,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:28:45,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:28:45,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-27 18:28:45,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46621621621621623 [2024-06-27 18:28:45,445 INFO L175 Difference]: Start difference. First operand has 118 places, 108 transitions, 904 flow. Second operand 8 states and 138 transitions. [2024-06-27 18:28:45,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 135 transitions, 1306 flow [2024-06-27 18:28:45,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 135 transitions, 1259 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 18:28:45,462 INFO L231 Difference]: Finished difference. Result has 120 places, 110 transitions, 934 flow [2024-06-27 18:28:45,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=934, PETRI_PLACES=120, PETRI_TRANSITIONS=110} [2024-06-27 18:28:45,463 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 79 predicate places. [2024-06-27 18:28:45,463 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 110 transitions, 934 flow [2024-06-27 18:28:45,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:28:45,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:45,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:45,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:28:45,464 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:45,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:45,464 INFO L85 PathProgramCache]: Analyzing trace with hash -128952155, now seen corresponding path program 4 times [2024-06-27 18:28:45,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:45,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337334203] [2024-06-27 18:28:45,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:45,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:45,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:46,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:46,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:46,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337334203] [2024-06-27 18:28:46,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337334203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:46,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:46,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:28:46,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115083049] [2024-06-27 18:28:46,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:46,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:28:46,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:46,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:28:46,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:28:46,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:28:46,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 110 transitions, 934 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:28:46,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:46,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:28:46,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:46,413 INFO L124 PetriNetUnfolderBase]: 799/1463 cut-off events. [2024-06-27 18:28:46,414 INFO L125 PetriNetUnfolderBase]: For 15551/15551 co-relation queries the response was YES. [2024-06-27 18:28:46,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6587 conditions, 1463 events. 799/1463 cut-off events. For 15551/15551 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8242 event pairs, 200 based on Foata normal form. 3/1425 useless extension candidates. Maximal degree in co-relation 6533. Up to 1145 conditions per place. [2024-06-27 18:28:46,421 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 108 selfloop transitions, 23 changer transitions 0/138 dead transitions. [2024-06-27 18:28:46,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 138 transitions, 1276 flow [2024-06-27 18:28:46,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:28:46,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:28:46,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-27 18:28:46,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47635135135135137 [2024-06-27 18:28:46,423 INFO L175 Difference]: Start difference. First operand has 120 places, 110 transitions, 934 flow. Second operand 8 states and 141 transitions. [2024-06-27 18:28:46,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 138 transitions, 1276 flow [2024-06-27 18:28:46,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 138 transitions, 1200 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 18:28:46,441 INFO L231 Difference]: Finished difference. Result has 122 places, 110 transitions, 909 flow [2024-06-27 18:28:46,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=909, PETRI_PLACES=122, PETRI_TRANSITIONS=110} [2024-06-27 18:28:46,442 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 81 predicate places. [2024-06-27 18:28:46,442 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 110 transitions, 909 flow [2024-06-27 18:28:46,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:28:46,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:46,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:46,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:28:46,443 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:46,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:46,443 INFO L85 PathProgramCache]: Analyzing trace with hash -257996134, now seen corresponding path program 6 times [2024-06-27 18:28:46,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:46,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299236669] [2024-06-27 18:28:46,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:46,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:47,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:47,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:47,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299236669] [2024-06-27 18:28:47,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299236669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:47,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:47,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:28:47,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326629293] [2024-06-27 18:28:47,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:47,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:28:47,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:47,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:28:47,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:28:47,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:28:47,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 110 transitions, 909 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:28:47,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:47,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:28:47,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:47,364 INFO L124 PetriNetUnfolderBase]: 797/1445 cut-off events. [2024-06-27 18:28:47,364 INFO L125 PetriNetUnfolderBase]: For 15151/15151 co-relation queries the response was YES. [2024-06-27 18:28:47,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6544 conditions, 1445 events. 797/1445 cut-off events. For 15151/15151 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8063 event pairs, 200 based on Foata normal form. 1/1408 useless extension candidates. Maximal degree in co-relation 6489. Up to 1202 conditions per place. [2024-06-27 18:28:47,371 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 104 selfloop transitions, 23 changer transitions 0/134 dead transitions. [2024-06-27 18:28:47,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 134 transitions, 1231 flow [2024-06-27 18:28:47,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:28:47,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:28:47,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-27 18:28:47,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:28:47,372 INFO L175 Difference]: Start difference. First operand has 122 places, 110 transitions, 909 flow. Second operand 8 states and 136 transitions. [2024-06-27 18:28:47,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 134 transitions, 1231 flow [2024-06-27 18:28:47,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 134 transitions, 1139 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 18:28:47,389 INFO L231 Difference]: Finished difference. Result has 123 places, 110 transitions, 868 flow [2024-06-27 18:28:47,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=868, PETRI_PLACES=123, PETRI_TRANSITIONS=110} [2024-06-27 18:28:47,394 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 82 predicate places. [2024-06-27 18:28:47,394 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 110 transitions, 868 flow [2024-06-27 18:28:47,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-27 18:28:47,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:47,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:47,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:28:47,395 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:47,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:47,395 INFO L85 PathProgramCache]: Analyzing trace with hash -128958107, now seen corresponding path program 3 times [2024-06-27 18:28:47,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:47,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725520998] [2024-06-27 18:28:47,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:47,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:47,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:48,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:48,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:48,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725520998] [2024-06-27 18:28:48,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725520998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:48,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:48,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:28:48,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005810247] [2024-06-27 18:28:48,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:48,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:28:48,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:48,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:28:48,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:28:48,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:28:48,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 110 transitions, 868 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 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) [2024-06-27 18:28:48,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:48,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:28:48,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:48,472 INFO L124 PetriNetUnfolderBase]: 743/1409 cut-off events. [2024-06-27 18:28:48,472 INFO L125 PetriNetUnfolderBase]: For 14420/14422 co-relation queries the response was YES. [2024-06-27 18:28:48,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6040 conditions, 1409 events. 743/1409 cut-off events. For 14420/14422 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 8123 event pairs, 189 based on Foata normal form. 1/1366 useless extension candidates. Maximal degree in co-relation 5984. Up to 1128 conditions per place. [2024-06-27 18:28:48,479 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 103 selfloop transitions, 14 changer transitions 0/136 dead transitions. [2024-06-27 18:28:48,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 136 transitions, 1190 flow [2024-06-27 18:28:48,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:28:48,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:28:48,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-27 18:28:48,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 18:28:48,480 INFO L175 Difference]: Start difference. First operand has 123 places, 110 transitions, 868 flow. Second operand 8 states and 140 transitions. [2024-06-27 18:28:48,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 136 transitions, 1190 flow [2024-06-27 18:28:48,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 136 transitions, 1139 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 18:28:48,496 INFO L231 Difference]: Finished difference. Result has 124 places, 112 transitions, 874 flow [2024-06-27 18:28:48,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=874, PETRI_PLACES=124, PETRI_TRANSITIONS=112} [2024-06-27 18:28:48,497 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 83 predicate places. [2024-06-27 18:28:48,497 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 112 transitions, 874 flow [2024-06-27 18:28:48,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 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) [2024-06-27 18:28:48,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:48,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:48,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:28:48,498 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:48,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:48,498 INFO L85 PathProgramCache]: Analyzing trace with hash 40238484, now seen corresponding path program 1 times [2024-06-27 18:28:48,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:48,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368125911] [2024-06-27 18:28:48,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:48,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:48,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:49,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:49,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:49,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368125911] [2024-06-27 18:28:49,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368125911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:49,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:49,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:49,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378651585] [2024-06-27 18:28:49,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:49,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:49,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:49,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:49,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:49,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:28:49,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 112 transitions, 874 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:49,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:49,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:28:49,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:49,940 INFO L124 PetriNetUnfolderBase]: 779/1411 cut-off events. [2024-06-27 18:28:49,941 INFO L125 PetriNetUnfolderBase]: For 16960/16960 co-relation queries the response was YES. [2024-06-27 18:28:49,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6401 conditions, 1411 events. 779/1411 cut-off events. For 16960/16960 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 7782 event pairs, 70 based on Foata normal form. 2/1386 useless extension candidates. Maximal degree in co-relation 6344. Up to 1035 conditions per place. [2024-06-27 18:28:49,949 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 119 selfloop transitions, 28 changer transitions 0/166 dead transitions. [2024-06-27 18:28:49,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 166 transitions, 1429 flow [2024-06-27 18:28:49,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:28:49,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:28:49,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-06-27 18:28:49,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48894348894348894 [2024-06-27 18:28:49,950 INFO L175 Difference]: Start difference. First operand has 124 places, 112 transitions, 874 flow. Second operand 11 states and 199 transitions. [2024-06-27 18:28:49,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 166 transitions, 1429 flow [2024-06-27 18:28:49,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 166 transitions, 1388 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 18:28:49,973 INFO L231 Difference]: Finished difference. Result has 131 places, 117 transitions, 978 flow [2024-06-27 18:28:49,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=978, PETRI_PLACES=131, PETRI_TRANSITIONS=117} [2024-06-27 18:28:49,974 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 90 predicate places. [2024-06-27 18:28:49,974 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 117 transitions, 978 flow [2024-06-27 18:28:49,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:49,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:49,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:49,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:28:49,975 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:49,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:49,975 INFO L85 PathProgramCache]: Analyzing trace with hash 40298934, now seen corresponding path program 2 times [2024-06-27 18:28:49,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:49,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772752872] [2024-06-27 18:28:49,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:49,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:49,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:50,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:50,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:50,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772752872] [2024-06-27 18:28:50,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772752872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:50,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:50,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:50,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746822568] [2024-06-27 18:28:50,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:50,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:50,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:50,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:50,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:50,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:28:50,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 117 transitions, 978 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:50,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:50,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:28:50,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:51,457 INFO L124 PetriNetUnfolderBase]: 809/1461 cut-off events. [2024-06-27 18:28:51,457 INFO L125 PetriNetUnfolderBase]: For 18566/18566 co-relation queries the response was YES. [2024-06-27 18:28:51,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6841 conditions, 1461 events. 809/1461 cut-off events. For 18566/18566 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8136 event pairs, 112 based on Foata normal form. 2/1436 useless extension candidates. Maximal degree in co-relation 6781. Up to 1146 conditions per place. [2024-06-27 18:28:51,466 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 118 selfloop transitions, 32 changer transitions 0/169 dead transitions. [2024-06-27 18:28:51,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 169 transitions, 1476 flow [2024-06-27 18:28:51,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:28:51,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:28:51,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 198 transitions. [2024-06-27 18:28:51,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 18:28:51,467 INFO L175 Difference]: Start difference. First operand has 131 places, 117 transitions, 978 flow. Second operand 11 states and 198 transitions. [2024-06-27 18:28:51,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 169 transitions, 1476 flow [2024-06-27 18:28:51,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 169 transitions, 1399 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-27 18:28:51,493 INFO L231 Difference]: Finished difference. Result has 137 places, 122 transitions, 1032 flow [2024-06-27 18:28:51,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=919, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1032, PETRI_PLACES=137, PETRI_TRANSITIONS=122} [2024-06-27 18:28:51,493 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 96 predicate places. [2024-06-27 18:28:51,493 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 122 transitions, 1032 flow [2024-06-27 18:28:51,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:51,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:51,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:51,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:28:51,494 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:51,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:51,494 INFO L85 PathProgramCache]: Analyzing trace with hash 40299058, now seen corresponding path program 1 times [2024-06-27 18:28:51,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:51,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939456693] [2024-06-27 18:28:51,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:51,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:51,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:52,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:52,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:52,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939456693] [2024-06-27 18:28:52,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939456693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:52,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:52,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:52,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304670625] [2024-06-27 18:28:52,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:52,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:52,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:52,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:52,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:52,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:28:52,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 122 transitions, 1032 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:52,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:52,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:28:52,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:52,738 INFO L124 PetriNetUnfolderBase]: 893/1572 cut-off events. [2024-06-27 18:28:52,739 INFO L125 PetriNetUnfolderBase]: For 19452/19452 co-relation queries the response was YES. [2024-06-27 18:28:52,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7397 conditions, 1572 events. 893/1572 cut-off events. For 19452/19452 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8645 event pairs, 121 based on Foata normal form. 1/1544 useless extension candidates. Maximal degree in co-relation 7336. Up to 1298 conditions per place. [2024-06-27 18:28:52,747 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 134 selfloop transitions, 34 changer transitions 0/175 dead transitions. [2024-06-27 18:28:52,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 175 transitions, 1632 flow [2024-06-27 18:28:52,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:28:52,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:28:52,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 18:28:52,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 18:28:52,757 INFO L175 Difference]: Start difference. First operand has 137 places, 122 transitions, 1032 flow. Second operand 10 states and 180 transitions. [2024-06-27 18:28:52,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 175 transitions, 1632 flow [2024-06-27 18:28:52,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 175 transitions, 1565 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 18:28:52,787 INFO L231 Difference]: Finished difference. Result has 140 places, 128 transitions, 1119 flow [2024-06-27 18:28:52,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=965, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1119, PETRI_PLACES=140, PETRI_TRANSITIONS=128} [2024-06-27 18:28:52,788 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 99 predicate places. [2024-06-27 18:28:52,788 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 128 transitions, 1119 flow [2024-06-27 18:28:52,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:52,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:52,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:52,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:28:52,788 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:52,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:52,789 INFO L85 PathProgramCache]: Analyzing trace with hash 43100404, now seen corresponding path program 1 times [2024-06-27 18:28:52,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:52,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356645540] [2024-06-27 18:28:52,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:52,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:53,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:53,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:53,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356645540] [2024-06-27 18:28:53,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356645540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:53,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:53,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:53,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223157471] [2024-06-27 18:28:53,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:53,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:53,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:53,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:53,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:53,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:28:53,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 128 transitions, 1119 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:53,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:53,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:28:53,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:54,016 INFO L124 PetriNetUnfolderBase]: 926/1710 cut-off events. [2024-06-27 18:28:54,016 INFO L125 PetriNetUnfolderBase]: For 22383/22383 co-relation queries the response was YES. [2024-06-27 18:28:54,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7878 conditions, 1710 events. 926/1710 cut-off events. For 22383/22383 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 10062 event pairs, 173 based on Foata normal form. 3/1655 useless extension candidates. Maximal degree in co-relation 7815. Up to 1413 conditions per place. [2024-06-27 18:28:54,026 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 147 selfloop transitions, 15 changer transitions 0/169 dead transitions. [2024-06-27 18:28:54,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 169 transitions, 1579 flow [2024-06-27 18:28:54,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:54,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:54,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-27 18:28:54,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744744744744745 [2024-06-27 18:28:54,029 INFO L175 Difference]: Start difference. First operand has 140 places, 128 transitions, 1119 flow. Second operand 9 states and 158 transitions. [2024-06-27 18:28:54,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 169 transitions, 1579 flow [2024-06-27 18:28:54,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 169 transitions, 1524 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-27 18:28:54,063 INFO L231 Difference]: Finished difference. Result has 144 places, 130 transitions, 1123 flow [2024-06-27 18:28:54,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1064, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1123, PETRI_PLACES=144, PETRI_TRANSITIONS=130} [2024-06-27 18:28:54,063 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 103 predicate places. [2024-06-27 18:28:54,063 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 130 transitions, 1123 flow [2024-06-27 18:28:54,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:54,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:54,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:54,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:28:54,063 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:54,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:54,064 INFO L85 PathProgramCache]: Analyzing trace with hash 43100218, now seen corresponding path program 2 times [2024-06-27 18:28:54,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:54,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589842956] [2024-06-27 18:28:54,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:54,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:54,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:54,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:54,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:54,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589842956] [2024-06-27 18:28:54,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589842956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:54,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:54,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:54,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242057588] [2024-06-27 18:28:54,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:54,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:54,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:54,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:54,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:54,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:28:54,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 130 transitions, 1123 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:54,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:54,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:28:54,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:55,390 INFO L124 PetriNetUnfolderBase]: 937/1736 cut-off events. [2024-06-27 18:28:55,390 INFO L125 PetriNetUnfolderBase]: For 22523/22523 co-relation queries the response was YES. [2024-06-27 18:28:55,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8054 conditions, 1736 events. 937/1736 cut-off events. For 22523/22523 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 10293 event pairs, 177 based on Foata normal form. 1/1676 useless extension candidates. Maximal degree in co-relation 7989. Up to 1452 conditions per place. [2024-06-27 18:28:55,398 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 147 selfloop transitions, 15 changer transitions 0/169 dead transitions. [2024-06-27 18:28:55,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 169 transitions, 1579 flow [2024-06-27 18:28:55,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:55,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:55,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-27 18:28:55,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-06-27 18:28:55,410 INFO L175 Difference]: Start difference. First operand has 144 places, 130 transitions, 1123 flow. Second operand 9 states and 156 transitions. [2024-06-27 18:28:55,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 169 transitions, 1579 flow [2024-06-27 18:28:55,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 169 transitions, 1536 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 18:28:55,444 INFO L231 Difference]: Finished difference. Result has 146 places, 132 transitions, 1141 flow [2024-06-27 18:28:55,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1080, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1141, PETRI_PLACES=146, PETRI_TRANSITIONS=132} [2024-06-27 18:28:55,444 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 105 predicate places. [2024-06-27 18:28:55,444 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 132 transitions, 1141 flow [2024-06-27 18:28:55,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:55,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:55,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:55,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:28:55,445 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:55,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:55,445 INFO L85 PathProgramCache]: Analyzing trace with hash -420062924, now seen corresponding path program 3 times [2024-06-27 18:28:55,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:55,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583247649] [2024-06-27 18:28:55,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:55,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:56,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:56,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:56,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583247649] [2024-06-27 18:28:56,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583247649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:56,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:56,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:56,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656712138] [2024-06-27 18:28:56,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:56,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:56,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:56,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:56,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:56,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:28:56,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 132 transitions, 1141 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:56,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:56,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:28:56,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:56,866 INFO L124 PetriNetUnfolderBase]: 938/1732 cut-off events. [2024-06-27 18:28:56,866 INFO L125 PetriNetUnfolderBase]: For 22825/22825 co-relation queries the response was YES. [2024-06-27 18:28:56,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7965 conditions, 1732 events. 938/1732 cut-off events. For 22825/22825 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 10220 event pairs, 176 based on Foata normal form. 1/1674 useless extension candidates. Maximal degree in co-relation 7899. Up to 1432 conditions per place. [2024-06-27 18:28:56,875 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 150 selfloop transitions, 19 changer transitions 0/176 dead transitions. [2024-06-27 18:28:56,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 176 transitions, 1631 flow [2024-06-27 18:28:56,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:28:56,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:28:56,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 18:28:56,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-06-27 18:28:56,876 INFO L175 Difference]: Start difference. First operand has 146 places, 132 transitions, 1141 flow. Second operand 10 states and 172 transitions. [2024-06-27 18:28:56,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 176 transitions, 1631 flow [2024-06-27 18:28:56,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 176 transitions, 1574 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 18:28:56,914 INFO L231 Difference]: Finished difference. Result has 149 places, 134 transitions, 1160 flow [2024-06-27 18:28:56,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1092, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1160, PETRI_PLACES=149, PETRI_TRANSITIONS=134} [2024-06-27 18:28:56,915 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 108 predicate places. [2024-06-27 18:28:56,915 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 134 transitions, 1160 flow [2024-06-27 18:28:56,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:56,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:56,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:56,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:28:56,915 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:56,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:56,915 INFO L85 PathProgramCache]: Analyzing trace with hash 43095444, now seen corresponding path program 3 times [2024-06-27 18:28:56,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:56,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900162578] [2024-06-27 18:28:56,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:56,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:57,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:57,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:57,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900162578] [2024-06-27 18:28:57,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900162578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:57,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:57,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:57,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916039528] [2024-06-27 18:28:57,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:57,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:57,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:57,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:57,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:57,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:28:57,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 134 transitions, 1160 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:57,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:57,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:28:57,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:58,275 INFO L124 PetriNetUnfolderBase]: 881/1660 cut-off events. [2024-06-27 18:28:58,275 INFO L125 PetriNetUnfolderBase]: For 23523/23525 co-relation queries the response was YES. [2024-06-27 18:28:58,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7636 conditions, 1660 events. 881/1660 cut-off events. For 23523/23525 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 9909 event pairs, 162 based on Foata normal form. 4/1608 useless extension candidates. Maximal degree in co-relation 7569. Up to 1294 conditions per place. [2024-06-27 18:28:58,283 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 135 selfloop transitions, 14 changer transitions 0/173 dead transitions. [2024-06-27 18:28:58,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 173 transitions, 1584 flow [2024-06-27 18:28:58,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:58,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:58,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 18:28:58,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4924924924924925 [2024-06-27 18:28:58,285 INFO L175 Difference]: Start difference. First operand has 149 places, 134 transitions, 1160 flow. Second operand 9 states and 164 transitions. [2024-06-27 18:28:58,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 173 transitions, 1584 flow [2024-06-27 18:28:58,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 173 transitions, 1527 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 18:28:58,321 INFO L231 Difference]: Finished difference. Result has 151 places, 135 transitions, 1151 flow [2024-06-27 18:28:58,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1111, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1151, PETRI_PLACES=151, PETRI_TRANSITIONS=135} [2024-06-27 18:28:58,321 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 110 predicate places. [2024-06-27 18:28:58,321 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 135 transitions, 1151 flow [2024-06-27 18:28:58,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:58,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:58,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:58,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:28:58,322 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:58,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:58,322 INFO L85 PathProgramCache]: Analyzing trace with hash 158564554, now seen corresponding path program 2 times [2024-06-27 18:28:58,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:58,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942110487] [2024-06-27 18:28:58,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:58,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:58,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:58,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:58,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:58,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942110487] [2024-06-27 18:28:58,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942110487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:58,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:58,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:58,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959384220] [2024-06-27 18:28:58,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:58,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:58,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:58,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:58,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:59,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:28:59,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 135 transitions, 1151 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:59,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:59,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:28:59,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:59,424 INFO L124 PetriNetUnfolderBase]: 1079/1909 cut-off events. [2024-06-27 18:28:59,425 INFO L125 PetriNetUnfolderBase]: For 30232/30232 co-relation queries the response was YES. [2024-06-27 18:28:59,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9188 conditions, 1909 events. 1079/1909 cut-off events. For 30232/30232 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11039 event pairs, 194 based on Foata normal form. 3/1866 useless extension candidates. Maximal degree in co-relation 9120. Up to 1147 conditions per place. [2024-06-27 18:28:59,437 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 138 selfloop transitions, 43 changer transitions 0/188 dead transitions. [2024-06-27 18:28:59,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 188 transitions, 1945 flow [2024-06-27 18:28:59,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:59,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:59,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-27 18:28:59,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255255255255256 [2024-06-27 18:28:59,438 INFO L175 Difference]: Start difference. First operand has 151 places, 135 transitions, 1151 flow. Second operand 9 states and 175 transitions. [2024-06-27 18:28:59,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 188 transitions, 1945 flow [2024-06-27 18:28:59,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 188 transitions, 1917 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 18:28:59,480 INFO L231 Difference]: Finished difference. Result has 153 places, 143 transitions, 1314 flow [2024-06-27 18:28:59,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1123, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1314, PETRI_PLACES=153, PETRI_TRANSITIONS=143} [2024-06-27 18:28:59,480 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 112 predicate places. [2024-06-27 18:28:59,480 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 143 transitions, 1314 flow [2024-06-27 18:28:59,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:59,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:59,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:59,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:28:59,481 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:59,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:59,481 INFO L85 PathProgramCache]: Analyzing trace with hash 158564368, now seen corresponding path program 4 times [2024-06-27 18:28:59,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:59,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041221420] [2024-06-27 18:28:59,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:59,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:59,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:00,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:00,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:00,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041221420] [2024-06-27 18:29:00,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041221420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:00,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:00,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:00,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083448766] [2024-06-27 18:29:00,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:00,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:00,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:00,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:00,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:00,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:29:00,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 143 transitions, 1314 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:00,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:00,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:29:00,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:00,645 INFO L124 PetriNetUnfolderBase]: 1099/1878 cut-off events. [2024-06-27 18:29:00,645 INFO L125 PetriNetUnfolderBase]: For 31522/31522 co-relation queries the response was YES. [2024-06-27 18:29:00,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9677 conditions, 1878 events. 1099/1878 cut-off events. For 31522/31522 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 10482 event pairs, 138 based on Foata normal form. 1/1854 useless extension candidates. Maximal degree in co-relation 9608. Up to 1508 conditions per place. [2024-06-27 18:29:00,656 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 126 selfloop transitions, 55 changer transitions 0/188 dead transitions. [2024-06-27 18:29:00,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 188 transitions, 1918 flow [2024-06-27 18:29:00,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:29:00,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:29:00,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-27 18:29:00,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48348348348348347 [2024-06-27 18:29:00,657 INFO L175 Difference]: Start difference. First operand has 153 places, 143 transitions, 1314 flow. Second operand 9 states and 161 transitions. [2024-06-27 18:29:00,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 188 transitions, 1918 flow [2024-06-27 18:29:00,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 188 transitions, 1869 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-27 18:29:00,700 INFO L231 Difference]: Finished difference. Result has 160 places, 152 transitions, 1532 flow [2024-06-27 18:29:00,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1265, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1532, PETRI_PLACES=160, PETRI_TRANSITIONS=152} [2024-06-27 18:29:00,700 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 119 predicate places. [2024-06-27 18:29:00,701 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 152 transitions, 1532 flow [2024-06-27 18:29:00,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:00,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:00,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:00,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:29:00,701 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:00,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:00,701 INFO L85 PathProgramCache]: Analyzing trace with hash 158571064, now seen corresponding path program 3 times [2024-06-27 18:29:00,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:00,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488051106] [2024-06-27 18:29:00,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:00,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:00,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:01,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:01,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:01,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488051106] [2024-06-27 18:29:01,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488051106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:01,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:01,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:01,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484481190] [2024-06-27 18:29:01,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:01,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:01,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:01,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:01,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:01,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:29:01,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 152 transitions, 1532 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:01,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:01,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:29:01,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:01,817 INFO L124 PetriNetUnfolderBase]: 1093/1935 cut-off events. [2024-06-27 18:29:01,817 INFO L125 PetriNetUnfolderBase]: For 32453/32453 co-relation queries the response was YES. [2024-06-27 18:29:01,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9811 conditions, 1935 events. 1093/1935 cut-off events. For 32453/32453 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 11243 event pairs, 198 based on Foata normal form. 3/1891 useless extension candidates. Maximal degree in co-relation 9739. Up to 1175 conditions per place. [2024-06-27 18:29:01,829 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 142 selfloop transitions, 45 changer transitions 0/194 dead transitions. [2024-06-27 18:29:01,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 194 transitions, 2174 flow [2024-06-27 18:29:01,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:29:01,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:29:01,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-27 18:29:01,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-27 18:29:01,830 INFO L175 Difference]: Start difference. First operand has 160 places, 152 transitions, 1532 flow. Second operand 9 states and 171 transitions. [2024-06-27 18:29:01,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 194 transitions, 2174 flow [2024-06-27 18:29:01,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 194 transitions, 2065 flow, removed 42 selfloop flow, removed 3 redundant places. [2024-06-27 18:29:01,879 INFO L231 Difference]: Finished difference. Result has 166 places, 152 transitions, 1518 flow [2024-06-27 18:29:01,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1423, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1518, PETRI_PLACES=166, PETRI_TRANSITIONS=152} [2024-06-27 18:29:01,879 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 125 predicate places. [2024-06-27 18:29:01,880 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 152 transitions, 1518 flow [2024-06-27 18:29:01,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:01,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:01,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:01,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:29:01,880 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:01,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:01,881 INFO L85 PathProgramCache]: Analyzing trace with hash 158386614, now seen corresponding path program 4 times [2024-06-27 18:29:01,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:01,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064196509] [2024-06-27 18:29:01,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:01,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:02,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:02,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:02,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064196509] [2024-06-27 18:29:02,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064196509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:02,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:02,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:02,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414534715] [2024-06-27 18:29:02,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:02,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:02,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:02,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:02,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:02,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:29:02,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 152 transitions, 1518 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:02,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:02,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:29:02,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:03,182 INFO L124 PetriNetUnfolderBase]: 1050/1960 cut-off events. [2024-06-27 18:29:03,182 INFO L125 PetriNetUnfolderBase]: For 34180/34182 co-relation queries the response was YES. [2024-06-27 18:29:03,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9877 conditions, 1960 events. 1050/1960 cut-off events. For 34180/34182 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 11997 event pairs, 199 based on Foata normal form. 4/1896 useless extension candidates. Maximal degree in co-relation 9803. Up to 1498 conditions per place. [2024-06-27 18:29:03,193 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 140 selfloop transitions, 22 changer transitions 0/190 dead transitions. [2024-06-27 18:29:03,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 190 transitions, 1972 flow [2024-06-27 18:29:03,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:29:03,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:29:03,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-27 18:29:03,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2024-06-27 18:29:03,194 INFO L175 Difference]: Start difference. First operand has 166 places, 152 transitions, 1518 flow. Second operand 9 states and 165 transitions. [2024-06-27 18:29:03,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 190 transitions, 1972 flow [2024-06-27 18:29:03,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 190 transitions, 1885 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 18:29:03,245 INFO L231 Difference]: Finished difference. Result has 169 places, 155 transitions, 1514 flow [2024-06-27 18:29:03,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1431, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1514, PETRI_PLACES=169, PETRI_TRANSITIONS=155} [2024-06-27 18:29:03,246 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 128 predicate places. [2024-06-27 18:29:03,246 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 155 transitions, 1514 flow [2024-06-27 18:29:03,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:03,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:03,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:03,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:29:03,246 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:03,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:03,246 INFO L85 PathProgramCache]: Analyzing trace with hash 158386738, now seen corresponding path program 5 times [2024-06-27 18:29:03,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:03,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154054044] [2024-06-27 18:29:03,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:03,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:03,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:04,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:04,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:04,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154054044] [2024-06-27 18:29:04,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154054044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:04,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:04,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:04,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328046875] [2024-06-27 18:29:04,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:04,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:04,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:04,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:04,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:04,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:29:04,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 155 transitions, 1514 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:04,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:04,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:29:04,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:04,642 INFO L124 PetriNetUnfolderBase]: 1132/2059 cut-off events. [2024-06-27 18:29:04,642 INFO L125 PetriNetUnfolderBase]: For 34270/34270 co-relation queries the response was YES. [2024-06-27 18:29:04,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10213 conditions, 2059 events. 1132/2059 cut-off events. For 34270/34270 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 12399 event pairs, 210 based on Foata normal form. 1/1994 useless extension candidates. Maximal degree in co-relation 10137. Up to 1478 conditions per place. [2024-06-27 18:29:04,655 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 144 selfloop transitions, 42 changer transitions 0/193 dead transitions. [2024-06-27 18:29:04,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 193 transitions, 2126 flow [2024-06-27 18:29:04,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:29:04,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:29:04,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-27 18:29:04,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067567567567568 [2024-06-27 18:29:04,656 INFO L175 Difference]: Start difference. First operand has 169 places, 155 transitions, 1514 flow. Second operand 8 states and 150 transitions. [2024-06-27 18:29:04,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 193 transitions, 2126 flow [2024-06-27 18:29:04,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 193 transitions, 2071 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 18:29:04,711 INFO L231 Difference]: Finished difference. Result has 173 places, 163 transitions, 1661 flow [2024-06-27 18:29:04,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1459, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1661, PETRI_PLACES=173, PETRI_TRANSITIONS=163} [2024-06-27 18:29:04,711 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 132 predicate places. [2024-06-27 18:29:04,711 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 163 transitions, 1661 flow [2024-06-27 18:29:04,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:04,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:04,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:04,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:29:04,712 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:04,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:04,712 INFO L85 PathProgramCache]: Analyzing trace with hash 158391574, now seen corresponding path program 4 times [2024-06-27 18:29:04,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:04,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930287451] [2024-06-27 18:29:04,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:04,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:04,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:05,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:05,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:05,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930287451] [2024-06-27 18:29:05,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930287451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:05,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:05,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:05,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813488691] [2024-06-27 18:29:05,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:05,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:05,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:05,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:05,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:05,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:29:05,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 163 transitions, 1661 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:05,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:05,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:29:05,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:05,916 INFO L124 PetriNetUnfolderBase]: 1126/2000 cut-off events. [2024-06-27 18:29:05,916 INFO L125 PetriNetUnfolderBase]: For 35033/35033 co-relation queries the response was YES. [2024-06-27 18:29:05,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10243 conditions, 2000 events. 1126/2000 cut-off events. For 35033/35033 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 11761 event pairs, 201 based on Foata normal form. 3/1953 useless extension candidates. Maximal degree in co-relation 10164. Up to 1236 conditions per place. [2024-06-27 18:29:05,931 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 157 selfloop transitions, 42 changer transitions 0/206 dead transitions. [2024-06-27 18:29:05,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 206 transitions, 2265 flow [2024-06-27 18:29:05,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:29:05,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:29:05,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-27 18:29:05,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225225225225225 [2024-06-27 18:29:05,932 INFO L175 Difference]: Start difference. First operand has 173 places, 163 transitions, 1661 flow. Second operand 9 states and 174 transitions. [2024-06-27 18:29:05,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 206 transitions, 2265 flow [2024-06-27 18:29:05,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 206 transitions, 2220 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-27 18:29:05,996 INFO L231 Difference]: Finished difference. Result has 179 places, 163 transitions, 1707 flow [2024-06-27 18:29:05,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1618, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1707, PETRI_PLACES=179, PETRI_TRANSITIONS=163} [2024-06-27 18:29:05,997 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 138 predicate places. [2024-06-27 18:29:05,998 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 163 transitions, 1707 flow [2024-06-27 18:29:05,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:05,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:05,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:05,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:29:05,999 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:05,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:05,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1318496744, now seen corresponding path program 5 times [2024-06-27 18:29:05,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:05,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668721216] [2024-06-27 18:29:06,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:06,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:06,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:06,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:06,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668721216] [2024-06-27 18:29:06,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668721216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:06,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:06,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:06,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943550465] [2024-06-27 18:29:06,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:06,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:06,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:06,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:06,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:06,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:29:06,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 163 transitions, 1707 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:06,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:06,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:29:06,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:07,078 INFO L124 PetriNetUnfolderBase]: 1237/2195 cut-off events. [2024-06-27 18:29:07,078 INFO L125 PetriNetUnfolderBase]: For 42267/42267 co-relation queries the response was YES. [2024-06-27 18:29:07,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11655 conditions, 2195 events. 1237/2195 cut-off events. For 42267/42267 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 13186 event pairs, 300 based on Foata normal form. 3/2148 useless extension candidates. Maximal degree in co-relation 11575. Up to 1602 conditions per place. [2024-06-27 18:29:07,094 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 170 selfloop transitions, 32 changer transitions 0/209 dead transitions. [2024-06-27 18:29:07,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 209 transitions, 2549 flow [2024-06-27 18:29:07,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:29:07,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:29:07,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 18:29:07,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2024-06-27 18:29:07,095 INFO L175 Difference]: Start difference. First operand has 179 places, 163 transitions, 1707 flow. Second operand 9 states and 168 transitions. [2024-06-27 18:29:07,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 209 transitions, 2549 flow [2024-06-27 18:29:07,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 209 transitions, 2426 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 18:29:07,166 INFO L231 Difference]: Finished difference. Result has 179 places, 169 transitions, 1743 flow [2024-06-27 18:29:07,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1596, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1743, PETRI_PLACES=179, PETRI_TRANSITIONS=169} [2024-06-27 18:29:07,166 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 138 predicate places. [2024-06-27 18:29:07,166 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 169 transitions, 1743 flow [2024-06-27 18:29:07,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:07,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:07,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:07,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:29:07,167 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:07,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:07,167 INFO L85 PathProgramCache]: Analyzing trace with hash -132692184, now seen corresponding path program 6 times [2024-06-27 18:29:07,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:07,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627741534] [2024-06-27 18:29:07,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:07,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:07,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:07,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:07,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:07,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627741534] [2024-06-27 18:29:07,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627741534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:07,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:07,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:07,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544611223] [2024-06-27 18:29:07,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:07,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:07,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:07,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:07,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:07,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:29:07,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 169 transitions, 1743 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:07,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:07,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:29:07,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:08,313 INFO L124 PetriNetUnfolderBase]: 1309/2397 cut-off events. [2024-06-27 18:29:08,314 INFO L125 PetriNetUnfolderBase]: For 47312/47312 co-relation queries the response was YES. [2024-06-27 18:29:08,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12345 conditions, 2397 events. 1309/2397 cut-off events. For 47312/47312 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 15024 event pairs, 539 based on Foata normal form. 3/2330 useless extension candidates. Maximal degree in co-relation 12264. Up to 1861 conditions per place. [2024-06-27 18:29:08,329 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 175 selfloop transitions, 27 changer transitions 0/209 dead transitions. [2024-06-27 18:29:08,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 209 transitions, 2481 flow [2024-06-27 18:29:08,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:08,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:08,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 18:29:08,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:29:08,330 INFO L175 Difference]: Start difference. First operand has 179 places, 169 transitions, 1743 flow. Second operand 10 states and 170 transitions. [2024-06-27 18:29:08,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 209 transitions, 2481 flow [2024-06-27 18:29:08,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 209 transitions, 2388 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 18:29:08,407 INFO L231 Difference]: Finished difference. Result has 185 places, 175 transitions, 1794 flow [2024-06-27 18:29:08,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1661, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1794, PETRI_PLACES=185, PETRI_TRANSITIONS=175} [2024-06-27 18:29:08,407 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 144 predicate places. [2024-06-27 18:29:08,407 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 175 transitions, 1794 flow [2024-06-27 18:29:08,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:08,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:08,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:08,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:29:08,408 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:08,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:08,408 INFO L85 PathProgramCache]: Analyzing trace with hash 562234466, now seen corresponding path program 1 times [2024-06-27 18:29:08,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:08,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019293408] [2024-06-27 18:29:08,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:08,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:08,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:09,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:09,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:09,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019293408] [2024-06-27 18:29:09,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019293408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:09,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:09,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:09,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324980674] [2024-06-27 18:29:09,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:09,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:09,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:09,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:09,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:09,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:29:09,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 175 transitions, 1794 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:09,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:09,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:29:09,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:09,735 INFO L124 PetriNetUnfolderBase]: 1311/2384 cut-off events. [2024-06-27 18:29:09,735 INFO L125 PetriNetUnfolderBase]: For 45385/45385 co-relation queries the response was YES. [2024-06-27 18:29:09,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12095 conditions, 2384 events. 1311/2384 cut-off events. For 45385/45385 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 14862 event pairs, 526 based on Foata normal form. 2/2319 useless extension candidates. Maximal degree in co-relation 12012. Up to 2018 conditions per place. [2024-06-27 18:29:09,748 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 178 selfloop transitions, 24 changer transitions 0/209 dead transitions. [2024-06-27 18:29:09,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 209 transitions, 2306 flow [2024-06-27 18:29:09,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:09,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:09,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-27 18:29:09,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44054054054054054 [2024-06-27 18:29:09,750 INFO L175 Difference]: Start difference. First operand has 185 places, 175 transitions, 1794 flow. Second operand 10 states and 163 transitions. [2024-06-27 18:29:09,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 209 transitions, 2306 flow [2024-06-27 18:29:09,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 209 transitions, 2232 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 18:29:09,825 INFO L231 Difference]: Finished difference. Result has 190 places, 179 transitions, 1819 flow [2024-06-27 18:29:09,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1720, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1819, PETRI_PLACES=190, PETRI_TRANSITIONS=179} [2024-06-27 18:29:09,825 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 149 predicate places. [2024-06-27 18:29:09,825 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 179 transitions, 1819 flow [2024-06-27 18:29:09,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:09,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:09,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:09,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:29:09,826 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:09,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:09,826 INFO L85 PathProgramCache]: Analyzing trace with hash 553051212, now seen corresponding path program 6 times [2024-06-27 18:29:09,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:09,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438704431] [2024-06-27 18:29:09,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:09,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:09,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:10,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:10,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:10,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438704431] [2024-06-27 18:29:10,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438704431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:10,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:10,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:10,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688370760] [2024-06-27 18:29:10,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:10,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:10,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:10,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:10,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:10,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:29:10,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 179 transitions, 1819 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:10,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:10,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:29:10,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:11,107 INFO L124 PetriNetUnfolderBase]: 1322/2422 cut-off events. [2024-06-27 18:29:11,107 INFO L125 PetriNetUnfolderBase]: For 45306/45306 co-relation queries the response was YES. [2024-06-27 18:29:11,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12238 conditions, 2422 events. 1322/2422 cut-off events. For 45306/45306 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 15216 event pairs, 564 based on Foata normal form. 1/2352 useless extension candidates. Maximal degree in co-relation 12153. Up to 2075 conditions per place. [2024-06-27 18:29:11,123 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 182 selfloop transitions, 18 changer transitions 0/207 dead transitions. [2024-06-27 18:29:11,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 207 transitions, 2323 flow [2024-06-27 18:29:11,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:29:11,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:29:11,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-27 18:29:11,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 18:29:11,124 INFO L175 Difference]: Start difference. First operand has 190 places, 179 transitions, 1819 flow. Second operand 9 states and 148 transitions. [2024-06-27 18:29:11,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 207 transitions, 2323 flow [2024-06-27 18:29:11,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 207 transitions, 2262 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 18:29:11,211 INFO L231 Difference]: Finished difference. Result has 192 places, 181 transitions, 1835 flow [2024-06-27 18:29:11,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1758, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1835, PETRI_PLACES=192, PETRI_TRANSITIONS=181} [2024-06-27 18:29:11,211 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 151 predicate places. [2024-06-27 18:29:11,211 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 181 transitions, 1835 flow [2024-06-27 18:29:11,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:11,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:11,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:11,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:29:11,211 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:11,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:11,212 INFO L85 PathProgramCache]: Analyzing trace with hash 297444432, now seen corresponding path program 7 times [2024-06-27 18:29:11,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:11,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517293052] [2024-06-27 18:29:11,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:11,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:11,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:11,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:11,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:11,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517293052] [2024-06-27 18:29:11,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517293052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:11,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:11,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:11,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566942556] [2024-06-27 18:29:11,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:11,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:11,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:11,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:11,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:11,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:29:11,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 181 transitions, 1835 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:11,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:11,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:29:12,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:12,505 INFO L124 PetriNetUnfolderBase]: 1345/2489 cut-off events. [2024-06-27 18:29:12,505 INFO L125 PetriNetUnfolderBase]: For 47444/47444 co-relation queries the response was YES. [2024-06-27 18:29:12,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12494 conditions, 2489 events. 1345/2489 cut-off events. For 47444/47444 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 15858 event pairs, 526 based on Foata normal form. 1/2411 useless extension candidates. Maximal degree in co-relation 12408. Up to 2025 conditions per place. [2024-06-27 18:29:12,522 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 173 selfloop transitions, 41 changer transitions 0/221 dead transitions. [2024-06-27 18:29:12,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 221 transitions, 2493 flow [2024-06-27 18:29:12,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:29:12,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:29:12,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-27 18:29:12,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2024-06-27 18:29:12,523 INFO L175 Difference]: Start difference. First operand has 192 places, 181 transitions, 1835 flow. Second operand 11 states and 178 transitions. [2024-06-27 18:29:12,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 221 transitions, 2493 flow [2024-06-27 18:29:12,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 221 transitions, 2436 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 18:29:12,613 INFO L231 Difference]: Finished difference. Result has 197 places, 190 transitions, 2016 flow [2024-06-27 18:29:12,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1778, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2016, PETRI_PLACES=197, PETRI_TRANSITIONS=190} [2024-06-27 18:29:12,614 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 156 predicate places. [2024-06-27 18:29:12,614 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 190 transitions, 2016 flow [2024-06-27 18:29:12,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:12,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:12,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:12,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:29:12,615 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:12,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:12,615 INFO L85 PathProgramCache]: Analyzing trace with hash 847835052, now seen corresponding path program 7 times [2024-06-27 18:29:12,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:12,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996319041] [2024-06-27 18:29:12,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:12,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:13,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:13,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:13,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996319041] [2024-06-27 18:29:13,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996319041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:13,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:13,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:13,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373184394] [2024-06-27 18:29:13,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:13,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:13,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:13,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:13,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:13,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:29:13,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 190 transitions, 2016 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:13,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:13,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:29:13,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:13,749 INFO L124 PetriNetUnfolderBase]: 1339/2442 cut-off events. [2024-06-27 18:29:13,750 INFO L125 PetriNetUnfolderBase]: For 48777/48777 co-relation queries the response was YES. [2024-06-27 18:29:13,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12484 conditions, 2442 events. 1339/2442 cut-off events. For 48777/48777 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 15377 event pairs, 528 based on Foata normal form. 3/2376 useless extension candidates. Maximal degree in co-relation 12396. Up to 1915 conditions per place. [2024-06-27 18:29:13,767 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 189 selfloop transitions, 27 changer transitions 0/223 dead transitions. [2024-06-27 18:29:13,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 223 transitions, 2634 flow [2024-06-27 18:29:13,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:29:13,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:29:13,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-27 18:29:13,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744744744744745 [2024-06-27 18:29:13,768 INFO L175 Difference]: Start difference. First operand has 197 places, 190 transitions, 2016 flow. Second operand 9 states and 158 transitions. [2024-06-27 18:29:13,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 223 transitions, 2634 flow [2024-06-27 18:29:13,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 223 transitions, 2459 flow, removed 50 selfloop flow, removed 7 redundant places. [2024-06-27 18:29:13,894 INFO L231 Difference]: Finished difference. Result has 199 places, 190 transitions, 1900 flow [2024-06-27 18:29:13,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1841, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1900, PETRI_PLACES=199, PETRI_TRANSITIONS=190} [2024-06-27 18:29:13,894 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 158 predicate places. [2024-06-27 18:29:13,894 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 190 transitions, 1900 flow [2024-06-27 18:29:13,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:13,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:13,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:13,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:29:13,895 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:13,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:13,895 INFO L85 PathProgramCache]: Analyzing trace with hash 562225848, now seen corresponding path program 8 times [2024-06-27 18:29:13,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:13,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666211496] [2024-06-27 18:29:13,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:13,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:14,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:14,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:14,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666211496] [2024-06-27 18:29:14,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666211496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:14,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:14,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:14,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505474293] [2024-06-27 18:29:14,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:14,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:14,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:14,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:14,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:14,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:29:14,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 190 transitions, 1900 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:14,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:14,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:29:14,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:14,995 INFO L124 PetriNetUnfolderBase]: 1333/2433 cut-off events. [2024-06-27 18:29:14,995 INFO L125 PetriNetUnfolderBase]: For 46468/46468 co-relation queries the response was YES. [2024-06-27 18:29:15,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12169 conditions, 2433 events. 1333/2433 cut-off events. For 46468/46468 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 15298 event pairs, 556 based on Foata normal form. 3/2367 useless extension candidates. Maximal degree in co-relation 12081. Up to 2042 conditions per place. [2024-06-27 18:29:15,010 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 192 selfloop transitions, 19 changer transitions 0/218 dead transitions. [2024-06-27 18:29:15,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 218 transitions, 2400 flow [2024-06-27 18:29:15,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:29:15,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:29:15,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-27 18:29:15,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45345345345345345 [2024-06-27 18:29:15,011 INFO L175 Difference]: Start difference. First operand has 199 places, 190 transitions, 1900 flow. Second operand 9 states and 151 transitions. [2024-06-27 18:29:15,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 218 transitions, 2400 flow [2024-06-27 18:29:15,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 218 transitions, 2321 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 18:29:15,115 INFO L231 Difference]: Finished difference. Result has 200 places, 190 transitions, 1868 flow [2024-06-27 18:29:15,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1825, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1868, PETRI_PLACES=200, PETRI_TRANSITIONS=190} [2024-06-27 18:29:15,116 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 159 predicate places. [2024-06-27 18:29:15,116 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 190 transitions, 1868 flow [2024-06-27 18:29:15,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:15,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:15,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:15,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:29:15,116 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:15,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:15,116 INFO L85 PathProgramCache]: Analyzing trace with hash -138948294, now seen corresponding path program 9 times [2024-06-27 18:29:15,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:15,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002320557] [2024-06-27 18:29:15,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:15,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:15,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:15,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:15,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:15,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002320557] [2024-06-27 18:29:15,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002320557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:15,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:15,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:15,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627759248] [2024-06-27 18:29:15,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:15,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:15,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:15,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:15,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:15,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:29:15,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 190 transitions, 1868 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:15,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:15,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:29:15,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:16,271 INFO L124 PetriNetUnfolderBase]: 1327/2457 cut-off events. [2024-06-27 18:29:16,272 INFO L125 PetriNetUnfolderBase]: For 44449/44449 co-relation queries the response was YES. [2024-06-27 18:29:16,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11801 conditions, 2457 events. 1327/2457 cut-off events. For 44449/44449 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 15673 event pairs, 523 based on Foata normal form. 3/2382 useless extension candidates. Maximal degree in co-relation 11713. Up to 1700 conditions per place. [2024-06-27 18:29:16,289 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 180 selfloop transitions, 38 changer transitions 0/225 dead transitions. [2024-06-27 18:29:16,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 225 transitions, 2496 flow [2024-06-27 18:29:16,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:29:16,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:29:16,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 18:29:16,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894894894894895 [2024-06-27 18:29:16,290 INFO L175 Difference]: Start difference. First operand has 200 places, 190 transitions, 1868 flow. Second operand 9 states and 163 transitions. [2024-06-27 18:29:16,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 225 transitions, 2496 flow [2024-06-27 18:29:16,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 225 transitions, 2430 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 18:29:16,396 INFO L231 Difference]: Finished difference. Result has 200 places, 190 transitions, 1883 flow [2024-06-27 18:29:16,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1802, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1883, PETRI_PLACES=200, PETRI_TRANSITIONS=190} [2024-06-27 18:29:16,396 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 159 predicate places. [2024-06-27 18:29:16,397 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 190 transitions, 1883 flow [2024-06-27 18:29:16,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:16,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:16,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:16,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:29:16,397 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:16,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:16,397 INFO L85 PathProgramCache]: Analyzing trace with hash 592055292, now seen corresponding path program 10 times [2024-06-27 18:29:16,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:16,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122042494] [2024-06-27 18:29:16,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:16,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:16,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:16,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:16,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:16,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122042494] [2024-06-27 18:29:16,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122042494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:16,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:16,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:16,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420858300] [2024-06-27 18:29:16,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:16,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:16,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:16,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:16,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:17,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:29:17,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 190 transitions, 1883 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:17,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:17,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:29:17,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:17,588 INFO L124 PetriNetUnfolderBase]: 1321/2465 cut-off events. [2024-06-27 18:29:17,588 INFO L125 PetriNetUnfolderBase]: For 42759/42759 co-relation queries the response was YES. [2024-06-27 18:29:17,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11735 conditions, 2465 events. 1321/2465 cut-off events. For 42759/42759 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 15844 event pairs, 488 based on Foata normal form. 3/2382 useless extension candidates. Maximal degree in co-relation 11646. Up to 1696 conditions per place. [2024-06-27 18:29:17,607 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 177 selfloop transitions, 40 changer transitions 0/224 dead transitions. [2024-06-27 18:29:17,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 224 transitions, 2415 flow [2024-06-27 18:29:17,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:29:17,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:29:17,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-27 18:29:17,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48348348348348347 [2024-06-27 18:29:17,608 INFO L175 Difference]: Start difference. First operand has 200 places, 190 transitions, 1883 flow. Second operand 9 states and 161 transitions. [2024-06-27 18:29:17,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 224 transitions, 2415 flow [2024-06-27 18:29:17,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 224 transitions, 2329 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 18:29:17,699 INFO L231 Difference]: Finished difference. Result has 202 places, 190 transitions, 1882 flow [2024-06-27 18:29:17,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1797, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1882, PETRI_PLACES=202, PETRI_TRANSITIONS=190} [2024-06-27 18:29:17,700 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 161 predicate places. [2024-06-27 18:29:17,700 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 190 transitions, 1882 flow [2024-06-27 18:29:17,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:17,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:17,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:17,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:29:17,701 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:17,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:17,701 INFO L85 PathProgramCache]: Analyzing trace with hash 297271452, now seen corresponding path program 8 times [2024-06-27 18:29:17,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:17,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126606933] [2024-06-27 18:29:17,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:17,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:18,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:18,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:18,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126606933] [2024-06-27 18:29:18,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126606933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:18,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:18,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:18,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269500924] [2024-06-27 18:29:18,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:18,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:18,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:18,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:18,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:18,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:29:18,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 190 transitions, 1882 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:18,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:18,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:29:18,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:18,954 INFO L124 PetriNetUnfolderBase]: 1335/2474 cut-off events. [2024-06-27 18:29:18,954 INFO L125 PetriNetUnfolderBase]: For 42125/42125 co-relation queries the response was YES. [2024-06-27 18:29:18,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11889 conditions, 2474 events. 1335/2474 cut-off events. For 42125/42125 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 15760 event pairs, 518 based on Foata normal form. 1/2396 useless extension candidates. Maximal degree in co-relation 11799. Up to 2011 conditions per place. [2024-06-27 18:29:18,970 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 176 selfloop transitions, 45 changer transitions 0/228 dead transitions. [2024-06-27 18:29:18,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 228 transitions, 2524 flow [2024-06-27 18:29:18,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:29:18,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:29:18,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-27 18:29:18,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4348894348894349 [2024-06-27 18:29:18,971 INFO L175 Difference]: Start difference. First operand has 202 places, 190 transitions, 1882 flow. Second operand 11 states and 177 transitions. [2024-06-27 18:29:18,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 228 transitions, 2524 flow [2024-06-27 18:29:19,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 228 transitions, 2416 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 18:29:19,062 INFO L231 Difference]: Finished difference. Result has 206 places, 198 transitions, 2036 flow [2024-06-27 18:29:19,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1778, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2036, PETRI_PLACES=206, PETRI_TRANSITIONS=198} [2024-06-27 18:29:19,062 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 165 predicate places. [2024-06-27 18:29:19,062 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 198 transitions, 2036 flow [2024-06-27 18:29:19,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:19,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:19,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:19,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:29:19,063 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:19,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:19,063 INFO L85 PathProgramCache]: Analyzing trace with hash 297266802, now seen corresponding path program 9 times [2024-06-27 18:29:19,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:19,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900516611] [2024-06-27 18:29:19,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:19,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:19,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:19,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:19,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900516611] [2024-06-27 18:29:19,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900516611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:19,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:19,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:19,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268366711] [2024-06-27 18:29:19,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:19,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:19,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:19,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:19,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:19,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:29:19,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 198 transitions, 2036 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:19,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:19,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:29:19,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:20,412 INFO L124 PetriNetUnfolderBase]: 1333/2467 cut-off events. [2024-06-27 18:29:20,412 INFO L125 PetriNetUnfolderBase]: For 42160/42160 co-relation queries the response was YES. [2024-06-27 18:29:20,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11795 conditions, 2467 events. 1333/2467 cut-off events. For 42160/42160 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 15701 event pairs, 543 based on Foata normal form. 1/2390 useless extension candidates. Maximal degree in co-relation 11702. Up to 1998 conditions per place. [2024-06-27 18:29:20,429 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 190 selfloop transitions, 34 changer transitions 0/231 dead transitions. [2024-06-27 18:29:20,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 231 transitions, 2572 flow [2024-06-27 18:29:20,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:20,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:20,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 18:29:20,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-06-27 18:29:20,431 INFO L175 Difference]: Start difference. First operand has 206 places, 198 transitions, 2036 flow. Second operand 10 states and 169 transitions. [2024-06-27 18:29:20,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 231 transitions, 2572 flow [2024-06-27 18:29:20,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 231 transitions, 2444 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-27 18:29:20,539 INFO L231 Difference]: Finished difference. Result has 210 places, 198 transitions, 1984 flow [2024-06-27 18:29:20,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1908, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1984, PETRI_PLACES=210, PETRI_TRANSITIONS=198} [2024-06-27 18:29:20,540 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 169 predicate places. [2024-06-27 18:29:20,540 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 198 transitions, 1984 flow [2024-06-27 18:29:20,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:20,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:20,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:20,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:29:20,540 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:20,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:20,541 INFO L85 PathProgramCache]: Analyzing trace with hash 297266678, now seen corresponding path program 5 times [2024-06-27 18:29:20,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:20,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198387179] [2024-06-27 18:29:20,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:20,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:21,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:21,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:21,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198387179] [2024-06-27 18:29:21,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198387179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:21,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:21,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:21,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286854945] [2024-06-27 18:29:21,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:21,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:21,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:21,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:21,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:21,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:29:21,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 198 transitions, 1984 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:21,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:21,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:29:21,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:21,946 INFO L124 PetriNetUnfolderBase]: 1257/2357 cut-off events. [2024-06-27 18:29:21,946 INFO L125 PetriNetUnfolderBase]: For 41883/41894 co-relation queries the response was YES. [2024-06-27 18:29:21,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11127 conditions, 2357 events. 1257/2357 cut-off events. For 41883/41894 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 15133 event pairs, 510 based on Foata normal form. 5/2281 useless extension candidates. Maximal degree in co-relation 11033. Up to 1861 conditions per place. [2024-06-27 18:29:21,967 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 171 selfloop transitions, 16 changer transitions 0/228 dead transitions. [2024-06-27 18:29:21,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 228 transitions, 2452 flow [2024-06-27 18:29:21,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:29:21,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:29:21,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-27 18:29:21,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47147147147147145 [2024-06-27 18:29:21,968 INFO L175 Difference]: Start difference. First operand has 210 places, 198 transitions, 1984 flow. Second operand 9 states and 157 transitions. [2024-06-27 18:29:21,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 228 transitions, 2452 flow [2024-06-27 18:29:22,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 228 transitions, 2357 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 18:29:22,068 INFO L231 Difference]: Finished difference. Result has 211 places, 199 transitions, 1945 flow [2024-06-27 18:29:22,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1889, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1945, PETRI_PLACES=211, PETRI_TRANSITIONS=199} [2024-06-27 18:29:22,068 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 170 predicate places. [2024-06-27 18:29:22,068 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 199 transitions, 1945 flow [2024-06-27 18:29:22,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:22,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:22,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:22,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:29:22,069 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:22,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:22,069 INFO L85 PathProgramCache]: Analyzing trace with hash 857347123, now seen corresponding path program 1 times [2024-06-27 18:29:22,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:22,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514532083] [2024-06-27 18:29:22,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:22,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:22,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:22,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:22,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514532083] [2024-06-27 18:29:22,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514532083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:22,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:22,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:22,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658356792] [2024-06-27 18:29:22,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:22,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:22,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:22,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:22,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:22,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:29:22,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 199 transitions, 1945 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:22,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:22,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:29:22,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:23,627 INFO L124 PetriNetUnfolderBase]: 1331/2415 cut-off events. [2024-06-27 18:29:23,627 INFO L125 PetriNetUnfolderBase]: For 40158/40158 co-relation queries the response was YES. [2024-06-27 18:29:23,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11395 conditions, 2415 events. 1331/2415 cut-off events. For 40158/40158 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 15164 event pairs, 531 based on Foata normal form. 2/2351 useless extension candidates. Maximal degree in co-relation 11300. Up to 2059 conditions per place. [2024-06-27 18:29:23,642 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 200 selfloop transitions, 22 changer transitions 0/229 dead transitions. [2024-06-27 18:29:23,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 229 transitions, 2459 flow [2024-06-27 18:29:23,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:29:23,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:29:23,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-27 18:29:23,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45345345345345345 [2024-06-27 18:29:23,643 INFO L175 Difference]: Start difference. First operand has 211 places, 199 transitions, 1945 flow. Second operand 9 states and 151 transitions. [2024-06-27 18:29:23,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 229 transitions, 2459 flow [2024-06-27 18:29:23,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 229 transitions, 2413 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 18:29:23,738 INFO L231 Difference]: Finished difference. Result has 213 places, 199 transitions, 1947 flow [2024-06-27 18:29:23,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1899, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1947, PETRI_PLACES=213, PETRI_TRANSITIONS=199} [2024-06-27 18:29:23,739 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 172 predicate places. [2024-06-27 18:29:23,739 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 199 transitions, 1947 flow [2024-06-27 18:29:23,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:23,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:23,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:23,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:29:23,740 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:23,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:23,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1286166379, now seen corresponding path program 1 times [2024-06-27 18:29:23,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:23,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072843832] [2024-06-27 18:29:23,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:23,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:23,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:23,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:23,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072843832] [2024-06-27 18:29:23,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072843832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:23,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:23,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:29:23,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302623846] [2024-06-27 18:29:23,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:23,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:29:23,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:23,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:29:23,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:29:23,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-06-27 18:29:23,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 199 transitions, 1947 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:23,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:23,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-06-27 18:29:23,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:23,955 INFO L124 PetriNetUnfolderBase]: 480/1005 cut-off events. [2024-06-27 18:29:23,955 INFO L125 PetriNetUnfolderBase]: For 20266/20301 co-relation queries the response was YES. [2024-06-27 18:29:23,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4584 conditions, 1005 events. 480/1005 cut-off events. For 20266/20301 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5786 event pairs, 101 based on Foata normal form. 79/981 useless extension candidates. Maximal degree in co-relation 4489. Up to 322 conditions per place. [2024-06-27 18:29:23,962 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 60 selfloop transitions, 34 changer transitions 0/155 dead transitions. [2024-06-27 18:29:23,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 155 transitions, 1643 flow [2024-06-27 18:29:23,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:29:23,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:29:23,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-06-27 18:29:23,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6959459459459459 [2024-06-27 18:29:23,963 INFO L175 Difference]: Start difference. First operand has 213 places, 199 transitions, 1947 flow. Second operand 4 states and 103 transitions. [2024-06-27 18:29:23,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 155 transitions, 1643 flow [2024-06-27 18:29:24,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 155 transitions, 1263 flow, removed 20 selfloop flow, removed 53 redundant places. [2024-06-27 18:29:24,007 INFO L231 Difference]: Finished difference. Result has 162 places, 140 transitions, 1125 flow [2024-06-27 18:29:24,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=949, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1125, PETRI_PLACES=162, PETRI_TRANSITIONS=140} [2024-06-27 18:29:24,007 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 121 predicate places. [2024-06-27 18:29:24,008 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 140 transitions, 1125 flow [2024-06-27 18:29:24,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:24,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:24,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:24,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:29:24,008 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:24,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:24,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1724289984, now seen corresponding path program 1 times [2024-06-27 18:29:24,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:24,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396678723] [2024-06-27 18:29:24,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:24,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:24,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:24,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:24,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396678723] [2024-06-27 18:29:24,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396678723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:24,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:24,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:24,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944222147] [2024-06-27 18:29:24,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:24,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:24,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:24,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:24,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:24,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:29:24,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 140 transitions, 1125 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:24,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:24,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:29:24,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:25,507 INFO L124 PetriNetUnfolderBase]: 826/1512 cut-off events. [2024-06-27 18:29:25,507 INFO L125 PetriNetUnfolderBase]: For 38762/38764 co-relation queries the response was YES. [2024-06-27 18:29:25,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7086 conditions, 1512 events. 826/1512 cut-off events. For 38762/38764 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 7921 event pairs, 171 based on Foata normal form. 5/1442 useless extension candidates. Maximal degree in co-relation 7007. Up to 1287 conditions per place. [2024-06-27 18:29:25,516 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 152 selfloop transitions, 31 changer transitions 0/191 dead transitions. [2024-06-27 18:29:25,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 191 transitions, 1741 flow [2024-06-27 18:29:25,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:29:25,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:29:25,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 200 transitions. [2024-06-27 18:29:25,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4158004158004158 [2024-06-27 18:29:25,517 INFO L175 Difference]: Start difference. First operand has 162 places, 140 transitions, 1125 flow. Second operand 13 states and 200 transitions. [2024-06-27 18:29:25,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 191 transitions, 1741 flow [2024-06-27 18:29:25,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 191 transitions, 1739 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:29:25,604 INFO L231 Difference]: Finished difference. Result has 178 places, 160 transitions, 1391 flow [2024-06-27 18:29:25,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1123, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1391, PETRI_PLACES=178, PETRI_TRANSITIONS=160} [2024-06-27 18:29:25,604 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 137 predicate places. [2024-06-27 18:29:25,604 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 160 transitions, 1391 flow [2024-06-27 18:29:25,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:25,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:25,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:25,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:29:25,605 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:25,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:25,605 INFO L85 PathProgramCache]: Analyzing trace with hash 552673511, now seen corresponding path program 1 times [2024-06-27 18:29:25,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:25,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710126672] [2024-06-27 18:29:25,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:25,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:26,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:26,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:26,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710126672] [2024-06-27 18:29:26,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710126672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:26,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:26,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:26,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997014342] [2024-06-27 18:29:26,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:26,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:26,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:26,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:26,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:26,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:29:26,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 160 transitions, 1391 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:26,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:26,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:29:26,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:26,940 INFO L124 PetriNetUnfolderBase]: 996/1853 cut-off events. [2024-06-27 18:29:26,940 INFO L125 PetriNetUnfolderBase]: For 43151/43151 co-relation queries the response was YES. [2024-06-27 18:29:26,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9154 conditions, 1853 events. 996/1853 cut-off events. For 43151/43151 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10466 event pairs, 253 based on Foata normal form. 2/1764 useless extension candidates. Maximal degree in co-relation 9068. Up to 1396 conditions per place. [2024-06-27 18:29:26,952 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 185 selfloop transitions, 41 changer transitions 0/234 dead transitions. [2024-06-27 18:29:26,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 234 transitions, 2424 flow [2024-06-27 18:29:26,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:29:26,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:29:26,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 196 transitions. [2024-06-27 18:29:26,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2024-06-27 18:29:26,953 INFO L175 Difference]: Start difference. First operand has 178 places, 160 transitions, 1391 flow. Second operand 12 states and 196 transitions. [2024-06-27 18:29:26,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 234 transitions, 2424 flow [2024-06-27 18:29:27,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 234 transitions, 2370 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 18:29:27,048 INFO L231 Difference]: Finished difference. Result has 192 places, 190 transitions, 1826 flow [2024-06-27 18:29:27,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1344, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1826, PETRI_PLACES=192, PETRI_TRANSITIONS=190} [2024-06-27 18:29:27,049 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 151 predicate places. [2024-06-27 18:29:27,049 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 190 transitions, 1826 flow [2024-06-27 18:29:27,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:27,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:27,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:27,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 18:29:27,049 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:27,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:27,050 INFO L85 PathProgramCache]: Analyzing trace with hash -894873959, now seen corresponding path program 2 times [2024-06-27 18:29:27,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:27,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346775802] [2024-06-27 18:29:27,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:27,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:27,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:27,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:27,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:27,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346775802] [2024-06-27 18:29:27,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346775802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:27,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:27,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:27,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555317829] [2024-06-27 18:29:27,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:27,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:27,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:27,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:27,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:27,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:29:27,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 190 transitions, 1826 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:27,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:27,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:29:27,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:28,254 INFO L124 PetriNetUnfolderBase]: 1185/2344 cut-off events. [2024-06-27 18:29:28,254 INFO L125 PetriNetUnfolderBase]: For 50680/50680 co-relation queries the response was YES. [2024-06-27 18:29:28,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11349 conditions, 2344 events. 1185/2344 cut-off events. For 50680/50680 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 14871 event pairs, 209 based on Foata normal form. 2/2223 useless extension candidates. Maximal degree in co-relation 11255. Up to 1227 conditions per place. [2024-06-27 18:29:28,269 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 188 selfloop transitions, 50 changer transitions 0/246 dead transitions. [2024-06-27 18:29:28,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 246 transitions, 2740 flow [2024-06-27 18:29:28,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:29:28,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:29:28,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 18:29:28,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 18:29:28,272 INFO L175 Difference]: Start difference. First operand has 192 places, 190 transitions, 1826 flow. Second operand 11 states and 185 transitions. [2024-06-27 18:29:28,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 246 transitions, 2740 flow [2024-06-27 18:29:28,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 246 transitions, 2676 flow, removed 29 selfloop flow, removed 2 redundant places. [2024-06-27 18:29:28,386 INFO L231 Difference]: Finished difference. Result has 204 places, 202 transitions, 2065 flow [2024-06-27 18:29:28,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1796, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2065, PETRI_PLACES=204, PETRI_TRANSITIONS=202} [2024-06-27 18:29:28,386 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 163 predicate places. [2024-06-27 18:29:28,386 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 202 transitions, 2065 flow [2024-06-27 18:29:28,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:28,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:28,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:28,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 18:29:28,387 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:28,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:28,387 INFO L85 PathProgramCache]: Analyzing trace with hash -734769271, now seen corresponding path program 3 times [2024-06-27 18:29:28,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:28,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401991954] [2024-06-27 18:29:28,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:28,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:28,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:28,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:28,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:28,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401991954] [2024-06-27 18:29:28,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401991954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:28,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:28,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:28,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030518156] [2024-06-27 18:29:28,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:28,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:28,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:28,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:28,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:29,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:29:29,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 202 transitions, 2065 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:29,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:29,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:29:29,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:29,672 INFO L124 PetriNetUnfolderBase]: 1486/3005 cut-off events. [2024-06-27 18:29:29,672 INFO L125 PetriNetUnfolderBase]: For 59178/59178 co-relation queries the response was YES. [2024-06-27 18:29:29,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14597 conditions, 3005 events. 1486/3005 cut-off events. For 59178/59178 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 21069 event pairs, 450 based on Foata normal form. 2/2833 useless extension candidates. Maximal degree in co-relation 14498. Up to 1941 conditions per place. [2024-06-27 18:29:29,695 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 196 selfloop transitions, 77 changer transitions 0/281 dead transitions. [2024-06-27 18:29:29,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 281 transitions, 3424 flow [2024-06-27 18:29:29,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:29:29,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:29:29,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 198 transitions. [2024-06-27 18:29:29,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-27 18:29:29,696 INFO L175 Difference]: Start difference. First operand has 204 places, 202 transitions, 2065 flow. Second operand 12 states and 198 transitions. [2024-06-27 18:29:29,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 281 transitions, 3424 flow [2024-06-27 18:29:29,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 281 transitions, 3228 flow, removed 64 selfloop flow, removed 5 redundant places. [2024-06-27 18:29:29,845 INFO L231 Difference]: Finished difference. Result has 215 places, 239 transitions, 2650 flow [2024-06-27 18:29:29,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1963, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2650, PETRI_PLACES=215, PETRI_TRANSITIONS=239} [2024-06-27 18:29:29,846 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 174 predicate places. [2024-06-27 18:29:29,846 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 239 transitions, 2650 flow [2024-06-27 18:29:29,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:29,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:29,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:29,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 18:29:29,846 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:29,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:29,847 INFO L85 PathProgramCache]: Analyzing trace with hash 57926316, now seen corresponding path program 2 times [2024-06-27 18:29:29,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:29,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723902936] [2024-06-27 18:29:29,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:29,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:29,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:30,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:30,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:30,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723902936] [2024-06-27 18:29:30,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723902936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:30,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:30,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:30,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552941291] [2024-06-27 18:29:30,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:30,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:30,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:30,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:30,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:30,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:29:30,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 239 transitions, 2650 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:30,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:30,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:29:30,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:31,211 INFO L124 PetriNetUnfolderBase]: 1522/3113 cut-off events. [2024-06-27 18:29:31,212 INFO L125 PetriNetUnfolderBase]: For 62268/62268 co-relation queries the response was YES. [2024-06-27 18:29:31,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15585 conditions, 3113 events. 1522/3113 cut-off events. For 62268/62268 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 22211 event pairs, 535 based on Foata normal form. 1/2914 useless extension candidates. Maximal degree in co-relation 15480. Up to 2352 conditions per place. [2024-06-27 18:29:31,236 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 206 selfloop transitions, 78 changer transitions 0/292 dead transitions. [2024-06-27 18:29:31,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 292 transitions, 3875 flow [2024-06-27 18:29:31,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:29:31,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:29:31,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 189 transitions. [2024-06-27 18:29:31,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42567567567567566 [2024-06-27 18:29:31,237 INFO L175 Difference]: Start difference. First operand has 215 places, 239 transitions, 2650 flow. Second operand 12 states and 189 transitions. [2024-06-27 18:29:31,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 292 transitions, 3875 flow [2024-06-27 18:29:31,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 292 transitions, 3834 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-27 18:29:31,403 INFO L231 Difference]: Finished difference. Result has 226 places, 265 transitions, 3236 flow [2024-06-27 18:29:31,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2609, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3236, PETRI_PLACES=226, PETRI_TRANSITIONS=265} [2024-06-27 18:29:31,403 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 185 predicate places. [2024-06-27 18:29:31,403 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 265 transitions, 3236 flow [2024-06-27 18:29:31,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:31,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:31,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:31,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 18:29:31,404 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:31,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:31,404 INFO L85 PathProgramCache]: Analyzing trace with hash 57771781, now seen corresponding path program 4 times [2024-06-27 18:29:31,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:31,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417903922] [2024-06-27 18:29:31,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:31,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:31,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:31,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:31,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:31,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417903922] [2024-06-27 18:29:31,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417903922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:31,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:31,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:31,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893623737] [2024-06-27 18:29:31,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:31,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:31,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:31,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:31,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:32,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:29:32,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 265 transitions, 3236 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:32,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:32,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:29:32,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:32,865 INFO L124 PetriNetUnfolderBase]: 1626/3366 cut-off events. [2024-06-27 18:29:32,865 INFO L125 PetriNetUnfolderBase]: For 68478/68478 co-relation queries the response was YES. [2024-06-27 18:29:32,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17129 conditions, 3366 events. 1626/3366 cut-off events. For 68478/68478 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 24866 event pairs, 536 based on Foata normal form. 2/3155 useless extension candidates. Maximal degree in co-relation 17020. Up to 2365 conditions per place. [2024-06-27 18:29:32,892 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 209 selfloop transitions, 88 changer transitions 0/305 dead transitions. [2024-06-27 18:29:32,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 305 transitions, 4202 flow [2024-06-27 18:29:32,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:29:32,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:29:32,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 193 transitions. [2024-06-27 18:29:32,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346846846846847 [2024-06-27 18:29:32,893 INFO L175 Difference]: Start difference. First operand has 226 places, 265 transitions, 3236 flow. Second operand 12 states and 193 transitions. [2024-06-27 18:29:32,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 305 transitions, 4202 flow [2024-06-27 18:29:33,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 305 transitions, 4110 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-27 18:29:33,119 INFO L231 Difference]: Finished difference. Result has 234 places, 272 transitions, 3448 flow [2024-06-27 18:29:33,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3152, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3448, PETRI_PLACES=234, PETRI_TRANSITIONS=272} [2024-06-27 18:29:33,120 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 193 predicate places. [2024-06-27 18:29:33,120 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 272 transitions, 3448 flow [2024-06-27 18:29:33,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:33,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:33,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:33,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 18:29:33,120 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:33,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:33,120 INFO L85 PathProgramCache]: Analyzing trace with hash -945047219, now seen corresponding path program 5 times [2024-06-27 18:29:33,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:33,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576912296] [2024-06-27 18:29:33,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:33,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:33,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:33,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:33,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:33,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576912296] [2024-06-27 18:29:33,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576912296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:33,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:33,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:29:33,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980614968] [2024-06-27 18:29:33,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:33,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:29:33,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:33,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:29:33,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:29:33,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:29:33,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 272 transitions, 3448 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:33,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:33,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:29:33,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:34,604 INFO L124 PetriNetUnfolderBase]: 1623/3385 cut-off events. [2024-06-27 18:29:34,604 INFO L125 PetriNetUnfolderBase]: For 67350/67350 co-relation queries the response was YES. [2024-06-27 18:29:34,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17459 conditions, 3385 events. 1623/3385 cut-off events. For 67350/67350 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 25155 event pairs, 575 based on Foata normal form. 2/3166 useless extension candidates. Maximal degree in co-relation 17347. Up to 2553 conditions per place. [2024-06-27 18:29:34,633 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 206 selfloop transitions, 86 changer transitions 0/300 dead transitions. [2024-06-27 18:29:34,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 300 transitions, 4184 flow [2024-06-27 18:29:34,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:29:34,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:29:34,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 188 transitions. [2024-06-27 18:29:34,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42342342342342343 [2024-06-27 18:29:34,635 INFO L175 Difference]: Start difference. First operand has 234 places, 272 transitions, 3448 flow. Second operand 12 states and 188 transitions. [2024-06-27 18:29:34,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 300 transitions, 4184 flow [2024-06-27 18:29:34,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 300 transitions, 3979 flow, removed 32 selfloop flow, removed 10 redundant places. [2024-06-27 18:29:34,884 INFO L231 Difference]: Finished difference. Result has 236 places, 272 transitions, 3426 flow [2024-06-27 18:29:34,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3243, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3426, PETRI_PLACES=236, PETRI_TRANSITIONS=272} [2024-06-27 18:29:34,884 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 195 predicate places. [2024-06-27 18:29:34,885 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 272 transitions, 3426 flow [2024-06-27 18:29:34,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:34,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:34,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:34,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 18:29:34,885 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:34,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:34,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1245994851, now seen corresponding path program 6 times [2024-06-27 18:29:34,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:34,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904312339] [2024-06-27 18:29:34,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:34,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:34,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:35,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:35,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:35,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904312339] [2024-06-27 18:29:35,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904312339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:35,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:35,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:35,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736277801] [2024-06-27 18:29:35,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:35,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:35,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:35,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:35,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:35,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:29:35,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 272 transitions, 3426 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:35,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:35,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:29:35,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:36,580 INFO L124 PetriNetUnfolderBase]: 1661/3475 cut-off events. [2024-06-27 18:29:36,581 INFO L125 PetriNetUnfolderBase]: For 67907/67907 co-relation queries the response was YES. [2024-06-27 18:29:36,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17811 conditions, 3475 events. 1661/3475 cut-off events. For 67907/67907 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 26106 event pairs, 550 based on Foata normal form. 2/3257 useless extension candidates. Maximal degree in co-relation 17699. Up to 2449 conditions per place. [2024-06-27 18:29:36,610 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 242 selfloop transitions, 69 changer transitions 0/319 dead transitions. [2024-06-27 18:29:36,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 319 transitions, 4460 flow [2024-06-27 18:29:36,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:29:36,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:29:36,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 190 transitions. [2024-06-27 18:29:36,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42792792792792794 [2024-06-27 18:29:36,612 INFO L175 Difference]: Start difference. First operand has 236 places, 272 transitions, 3426 flow. Second operand 12 states and 190 transitions. [2024-06-27 18:29:36,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 319 transitions, 4460 flow [2024-06-27 18:29:36,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 319 transitions, 4281 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:29:36,841 INFO L231 Difference]: Finished difference. Result has 240 places, 281 transitions, 3534 flow [2024-06-27 18:29:36,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3263, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3534, PETRI_PLACES=240, PETRI_TRANSITIONS=281} [2024-06-27 18:29:36,842 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 199 predicate places. [2024-06-27 18:29:36,842 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 281 transitions, 3534 flow [2024-06-27 18:29:36,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:36,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:36,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:36,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 18:29:36,843 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:36,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:36,843 INFO L85 PathProgramCache]: Analyzing trace with hash 552763721, now seen corresponding path program 7 times [2024-06-27 18:29:36,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:36,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147879824] [2024-06-27 18:29:36,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:36,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:36,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:37,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:37,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:37,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147879824] [2024-06-27 18:29:37,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147879824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:37,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:37,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:37,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108593788] [2024-06-27 18:29:37,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:37,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:37,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:37,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:37,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:37,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:29:37,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 281 transitions, 3534 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:37,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:37,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:29:37,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:38,480 INFO L124 PetriNetUnfolderBase]: 1658/3467 cut-off events. [2024-06-27 18:29:38,480 INFO L125 PetriNetUnfolderBase]: For 66808/66808 co-relation queries the response was YES. [2024-06-27 18:29:38,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18030 conditions, 3467 events. 1658/3467 cut-off events. For 66808/66808 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 25952 event pairs, 593 based on Foata normal form. 2/3241 useless extension candidates. Maximal degree in co-relation 17915. Up to 2694 conditions per place. [2024-06-27 18:29:38,511 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 241 selfloop transitions, 67 changer transitions 0/316 dead transitions. [2024-06-27 18:29:38,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 316 transitions, 4347 flow [2024-06-27 18:29:38,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:29:38,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:29:38,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 196 transitions. [2024-06-27 18:29:38,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074844074844075 [2024-06-27 18:29:38,512 INFO L175 Difference]: Start difference. First operand has 240 places, 281 transitions, 3534 flow. Second operand 13 states and 196 transitions. [2024-06-27 18:29:38,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 316 transitions, 4347 flow [2024-06-27 18:29:38,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 316 transitions, 4228 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 18:29:38,736 INFO L231 Difference]: Finished difference. Result has 247 places, 287 transitions, 3652 flow [2024-06-27 18:29:38,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3415, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3652, PETRI_PLACES=247, PETRI_TRANSITIONS=287} [2024-06-27 18:29:38,737 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 206 predicate places. [2024-06-27 18:29:38,737 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 287 transitions, 3652 flow [2024-06-27 18:29:38,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:38,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:38,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:38,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 18:29:38,738 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:38,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:38,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1245998726, now seen corresponding path program 3 times [2024-06-27 18:29:38,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:38,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905804989] [2024-06-27 18:29:38,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:38,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:39,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:39,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:39,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905804989] [2024-06-27 18:29:39,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905804989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:39,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:39,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:39,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941938374] [2024-06-27 18:29:39,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:39,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:39,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:39,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:39,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:39,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:29:39,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 287 transitions, 3652 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:39,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:39,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:29:39,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:40,566 INFO L124 PetriNetUnfolderBase]: 1712/3550 cut-off events. [2024-06-27 18:29:40,566 INFO L125 PetriNetUnfolderBase]: For 70927/70927 co-relation queries the response was YES. [2024-06-27 18:29:40,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18628 conditions, 3550 events. 1712/3550 cut-off events. For 70927/70927 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 26468 event pairs, 593 based on Foata normal form. 3/3309 useless extension candidates. Maximal degree in co-relation 18510. Up to 2789 conditions per place. [2024-06-27 18:29:40,592 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 250 selfloop transitions, 82 changer transitions 0/340 dead transitions. [2024-06-27 18:29:40,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 340 transitions, 4732 flow [2024-06-27 18:29:40,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 18:29:40,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 18:29:40,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 210 transitions. [2024-06-27 18:29:40,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40540540540540543 [2024-06-27 18:29:40,593 INFO L175 Difference]: Start difference. First operand has 247 places, 287 transitions, 3652 flow. Second operand 14 states and 210 transitions. [2024-06-27 18:29:40,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 340 transitions, 4732 flow [2024-06-27 18:29:40,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 340 transitions, 4623 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:29:40,808 INFO L231 Difference]: Finished difference. Result has 253 places, 306 transitions, 4001 flow [2024-06-27 18:29:40,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3543, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4001, PETRI_PLACES=253, PETRI_TRANSITIONS=306} [2024-06-27 18:29:40,809 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 212 predicate places. [2024-06-27 18:29:40,809 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 306 transitions, 4001 flow [2024-06-27 18:29:40,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:40,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:40,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:40,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 18:29:40,810 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:40,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:40,810 INFO L85 PathProgramCache]: Analyzing trace with hash 617256040, now seen corresponding path program 4 times [2024-06-27 18:29:40,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:40,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137697414] [2024-06-27 18:29:40,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:40,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:41,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:41,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:41,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137697414] [2024-06-27 18:29:41,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137697414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:41,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:41,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:41,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156098545] [2024-06-27 18:29:41,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:41,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:41,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:41,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:41,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:41,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:29:41,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 306 transitions, 4001 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:41,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:41,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:29:41,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:42,686 INFO L124 PetriNetUnfolderBase]: 1915/3908 cut-off events. [2024-06-27 18:29:42,686 INFO L125 PetriNetUnfolderBase]: For 82199/82199 co-relation queries the response was YES. [2024-06-27 18:29:42,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21086 conditions, 3908 events. 1915/3908 cut-off events. For 82199/82199 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 29340 event pairs, 575 based on Foata normal form. 3/3643 useless extension candidates. Maximal degree in co-relation 20966. Up to 2822 conditions per place. [2024-06-27 18:29:42,720 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 310 selfloop transitions, 120 changer transitions 0/438 dead transitions. [2024-06-27 18:29:42,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 438 transitions, 6027 flow [2024-06-27 18:29:42,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:29:42,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:29:42,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 205 transitions. [2024-06-27 18:29:42,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4617117117117117 [2024-06-27 18:29:42,721 INFO L175 Difference]: Start difference. First operand has 253 places, 306 transitions, 4001 flow. Second operand 12 states and 205 transitions. [2024-06-27 18:29:42,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 438 transitions, 6027 flow [2024-06-27 18:29:43,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 438 transitions, 5852 flow, removed 23 selfloop flow, removed 11 redundant places. [2024-06-27 18:29:43,006 INFO L231 Difference]: Finished difference. Result has 260 places, 372 transitions, 4847 flow [2024-06-27 18:29:43,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3826, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4847, PETRI_PLACES=260, PETRI_TRANSITIONS=372} [2024-06-27 18:29:43,006 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 219 predicate places. [2024-06-27 18:29:43,007 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 372 transitions, 4847 flow [2024-06-27 18:29:43,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:43,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:43,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:43,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 18:29:43,007 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:43,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:43,007 INFO L85 PathProgramCache]: Analyzing trace with hash 617255885, now seen corresponding path program 8 times [2024-06-27 18:29:43,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:43,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017240758] [2024-06-27 18:29:43,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:43,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:43,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:43,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:43,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017240758] [2024-06-27 18:29:43,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017240758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:43,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:43,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:43,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853806211] [2024-06-27 18:29:43,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:43,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:43,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:43,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:43,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:43,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:29:43,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 372 transitions, 4847 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:43,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:43,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:29:43,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:44,882 INFO L124 PetriNetUnfolderBase]: 1932/3936 cut-off events. [2024-06-27 18:29:44,882 INFO L125 PetriNetUnfolderBase]: For 84636/84636 co-relation queries the response was YES. [2024-06-27 18:29:44,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22265 conditions, 3936 events. 1932/3936 cut-off events. For 84636/84636 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 29404 event pairs, 629 based on Foata normal form. 2/3668 useless extension candidates. Maximal degree in co-relation 22138. Up to 3101 conditions per place. [2024-06-27 18:29:44,921 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 328 selfloop transitions, 84 changer transitions 0/420 dead transitions. [2024-06-27 18:29:44,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 420 transitions, 6072 flow [2024-06-27 18:29:44,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:29:44,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:29:44,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-27 18:29:44,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 18:29:44,922 INFO L175 Difference]: Start difference. First operand has 260 places, 372 transitions, 4847 flow. Second operand 11 states and 176 transitions. [2024-06-27 18:29:44,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 420 transitions, 6072 flow [2024-06-27 18:29:45,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 420 transitions, 5997 flow, removed 33 selfloop flow, removed 2 redundant places. [2024-06-27 18:29:45,292 INFO L231 Difference]: Finished difference. Result has 270 places, 384 transitions, 5107 flow [2024-06-27 18:29:45,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4774, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5107, PETRI_PLACES=270, PETRI_TRANSITIONS=384} [2024-06-27 18:29:45,292 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 229 predicate places. [2024-06-27 18:29:45,292 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 384 transitions, 5107 flow [2024-06-27 18:29:45,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:45,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:45,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:45,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 18:29:45,293 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:45,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:45,293 INFO L85 PathProgramCache]: Analyzing trace with hash 829619048, now seen corresponding path program 5 times [2024-06-27 18:29:45,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:45,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032519020] [2024-06-27 18:29:45,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:45,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:45,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:46,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:46,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:46,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032519020] [2024-06-27 18:29:46,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032519020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:46,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:46,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:46,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743509899] [2024-06-27 18:29:46,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:46,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:46,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:46,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:46,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:46,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:29:46,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 384 transitions, 5107 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:46,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:46,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:29:46,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:47,249 INFO L124 PetriNetUnfolderBase]: 1926/3927 cut-off events. [2024-06-27 18:29:47,249 INFO L125 PetriNetUnfolderBase]: For 81536/81536 co-relation queries the response was YES. [2024-06-27 18:29:47,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22050 conditions, 3927 events. 1926/3927 cut-off events. For 81536/81536 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 29485 event pairs, 584 based on Foata normal form. 3/3659 useless extension candidates. Maximal degree in co-relation 21920. Up to 2874 conditions per place. [2024-06-27 18:29:47,280 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 305 selfloop transitions, 121 changer transitions 0/434 dead transitions. [2024-06-27 18:29:47,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 434 transitions, 6355 flow [2024-06-27 18:29:47,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:29:47,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:29:47,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 18:29:47,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 18:29:47,281 INFO L175 Difference]: Start difference. First operand has 270 places, 384 transitions, 5107 flow. Second operand 11 states and 185 transitions. [2024-06-27 18:29:47,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 434 transitions, 6355 flow [2024-06-27 18:29:47,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 434 transitions, 6206 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-27 18:29:47,612 INFO L231 Difference]: Finished difference. Result has 276 places, 384 transitions, 5206 flow [2024-06-27 18:29:47,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4958, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5206, PETRI_PLACES=276, PETRI_TRANSITIONS=384} [2024-06-27 18:29:47,612 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 235 predicate places. [2024-06-27 18:29:47,613 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 384 transitions, 5206 flow [2024-06-27 18:29:47,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:47,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:47,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:47,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 18:29:47,613 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:47,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:47,613 INFO L85 PathProgramCache]: Analyzing trace with hash 611899240, now seen corresponding path program 6 times [2024-06-27 18:29:47,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:47,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65524766] [2024-06-27 18:29:47,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:47,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:48,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:48,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:48,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65524766] [2024-06-27 18:29:48,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65524766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:48,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:48,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:48,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686354713] [2024-06-27 18:29:48,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:48,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:48,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:48,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:48,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:48,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:29:48,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 384 transitions, 5206 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:48,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:48,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:29:48,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:49,533 INFO L124 PetriNetUnfolderBase]: 1945/3956 cut-off events. [2024-06-27 18:29:49,533 INFO L125 PetriNetUnfolderBase]: For 84454/84454 co-relation queries the response was YES. [2024-06-27 18:29:49,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22385 conditions, 3956 events. 1945/3956 cut-off events. For 84454/84454 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 29630 event pairs, 585 based on Foata normal form. 3/3684 useless extension candidates. Maximal degree in co-relation 22255. Up to 2902 conditions per place. [2024-06-27 18:29:49,574 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 317 selfloop transitions, 113 changer transitions 0/438 dead transitions. [2024-06-27 18:29:49,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 438 transitions, 6535 flow [2024-06-27 18:29:49,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:29:49,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:29:49,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 18:29:49,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643734643734644 [2024-06-27 18:29:49,575 INFO L175 Difference]: Start difference. First operand has 276 places, 384 transitions, 5206 flow. Second operand 11 states and 189 transitions. [2024-06-27 18:29:49,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 438 transitions, 6535 flow [2024-06-27 18:29:49,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 438 transitions, 6305 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 18:29:49,949 INFO L231 Difference]: Finished difference. Result has 279 places, 388 transitions, 5318 flow [2024-06-27 18:29:49,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4976, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5318, PETRI_PLACES=279, PETRI_TRANSITIONS=388} [2024-06-27 18:29:49,949 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 238 predicate places. [2024-06-27 18:29:49,949 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 388 transitions, 5318 flow [2024-06-27 18:29:49,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:49,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:49,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:49,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 18:29:49,950 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:49,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:49,950 INFO L85 PathProgramCache]: Analyzing trace with hash 611749510, now seen corresponding path program 7 times [2024-06-27 18:29:49,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:49,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756740512] [2024-06-27 18:29:49,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:49,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:49,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:50,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:50,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:50,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756740512] [2024-06-27 18:29:50,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756740512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:50,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:50,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:50,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083367603] [2024-06-27 18:29:50,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:50,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:50,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:50,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:50,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:50,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:29:50,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 388 transitions, 5318 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:50,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:50,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:29:50,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:51,827 INFO L124 PetriNetUnfolderBase]: 1963/3983 cut-off events. [2024-06-27 18:29:51,827 INFO L125 PetriNetUnfolderBase]: For 83351/83351 co-relation queries the response was YES. [2024-06-27 18:29:51,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22762 conditions, 3983 events. 1963/3983 cut-off events. For 83351/83351 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 29772 event pairs, 585 based on Foata normal form. 1/3706 useless extension candidates. Maximal degree in co-relation 22630. Up to 2867 conditions per place. [2024-06-27 18:29:51,868 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 315 selfloop transitions, 126 changer transitions 0/449 dead transitions. [2024-06-27 18:29:51,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 449 transitions, 6724 flow [2024-06-27 18:29:51,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:29:51,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:29:51,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 219 transitions. [2024-06-27 18:29:51,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4553014553014553 [2024-06-27 18:29:51,869 INFO L175 Difference]: Start difference. First operand has 279 places, 388 transitions, 5318 flow. Second operand 13 states and 219 transitions. [2024-06-27 18:29:51,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 449 transitions, 6724 flow [2024-06-27 18:29:52,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 449 transitions, 6493 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-27 18:29:52,339 INFO L231 Difference]: Finished difference. Result has 289 places, 394 transitions, 5461 flow [2024-06-27 18:29:52,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5087, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5461, PETRI_PLACES=289, PETRI_TRANSITIONS=394} [2024-06-27 18:29:52,340 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 248 predicate places. [2024-06-27 18:29:52,340 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 394 transitions, 5461 flow [2024-06-27 18:29:52,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:52,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:52,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:52,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 18:29:52,340 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:52,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:52,341 INFO L85 PathProgramCache]: Analyzing trace with hash 823904973, now seen corresponding path program 9 times [2024-06-27 18:29:52,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:52,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216824726] [2024-06-27 18:29:52,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:52,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:53,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:53,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:53,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216824726] [2024-06-27 18:29:53,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216824726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:53,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:53,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:53,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616679784] [2024-06-27 18:29:53,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:53,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:53,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:53,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:53,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:53,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:29:53,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 394 transitions, 5461 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:53,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:53,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:29:53,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:54,434 INFO L124 PetriNetUnfolderBase]: 1980/4022 cut-off events. [2024-06-27 18:29:54,435 INFO L125 PetriNetUnfolderBase]: For 87734/87734 co-relation queries the response was YES. [2024-06-27 18:29:54,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23075 conditions, 4022 events. 1980/4022 cut-off events. For 87734/87734 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 30093 event pairs, 645 based on Foata normal form. 2/3745 useless extension candidates. Maximal degree in co-relation 22940. Up to 3165 conditions per place. [2024-06-27 18:29:54,477 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 338 selfloop transitions, 85 changer transitions 0/431 dead transitions. [2024-06-27 18:29:54,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 431 transitions, 6596 flow [2024-06-27 18:29:54,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:29:54,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:29:54,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 191 transitions. [2024-06-27 18:29:54,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43018018018018017 [2024-06-27 18:29:54,478 INFO L175 Difference]: Start difference. First operand has 289 places, 394 transitions, 5461 flow. Second operand 12 states and 191 transitions. [2024-06-27 18:29:54,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 431 transitions, 6596 flow [2024-06-27 18:29:54,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 431 transitions, 6332 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-27 18:29:54,888 INFO L231 Difference]: Finished difference. Result has 292 places, 395 transitions, 5393 flow [2024-06-27 18:29:54,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5197, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5393, PETRI_PLACES=292, PETRI_TRANSITIONS=395} [2024-06-27 18:29:54,888 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 251 predicate places. [2024-06-27 18:29:54,888 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 395 transitions, 5393 flow [2024-06-27 18:29:54,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:54,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:54,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:54,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 18:29:54,889 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:54,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:54,889 INFO L85 PathProgramCache]: Analyzing trace with hash 611745635, now seen corresponding path program 10 times [2024-06-27 18:29:54,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:54,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847045844] [2024-06-27 18:29:54,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:54,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:55,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:55,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:55,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847045844] [2024-06-27 18:29:55,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847045844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:55,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:55,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:55,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25009388] [2024-06-27 18:29:55,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:55,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:55,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:55,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:55,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:55,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:29:55,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 395 transitions, 5393 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:55,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:55,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:29:55,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:56,758 INFO L124 PetriNetUnfolderBase]: 2014/4100 cut-off events. [2024-06-27 18:29:56,758 INFO L125 PetriNetUnfolderBase]: For 89460/89460 co-relation queries the response was YES. [2024-06-27 18:29:56,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23212 conditions, 4100 events. 2014/4100 cut-off events. For 89460/89460 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 30891 event pairs, 638 based on Foata normal form. 2/3819 useless extension candidates. Maximal degree in co-relation 23076. Up to 3154 conditions per place. [2024-06-27 18:29:56,799 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 341 selfloop transitions, 86 changer transitions 0/435 dead transitions. [2024-06-27 18:29:56,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 435 transitions, 6537 flow [2024-06-27 18:29:56,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:29:56,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:29:56,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 18:29:56,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44717444717444715 [2024-06-27 18:29:56,800 INFO L175 Difference]: Start difference. First operand has 292 places, 395 transitions, 5393 flow. Second operand 11 states and 182 transitions. [2024-06-27 18:29:56,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 435 transitions, 6537 flow [2024-06-27 18:29:57,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 435 transitions, 6359 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-27 18:29:57,229 INFO L231 Difference]: Finished difference. Result has 295 places, 397 transitions, 5426 flow [2024-06-27 18:29:57,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5215, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5426, PETRI_PLACES=295, PETRI_TRANSITIONS=397} [2024-06-27 18:29:57,229 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 254 predicate places. [2024-06-27 18:29:57,229 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 397 transitions, 5426 flow [2024-06-27 18:29:57,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:57,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:57,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:57,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 18:29:57,230 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:57,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:57,230 INFO L85 PathProgramCache]: Analyzing trace with hash -225617537, now seen corresponding path program 11 times [2024-06-27 18:29:57,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:57,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759233544] [2024-06-27 18:29:57,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:57,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:57,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:58,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:58,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:58,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759233544] [2024-06-27 18:29:58,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759233544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:58,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:58,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:58,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825332071] [2024-06-27 18:29:58,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:58,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:58,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:58,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:58,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:58,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:29:58,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 397 transitions, 5426 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:58,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:58,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:29:58,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:59,059 INFO L124 PetriNetUnfolderBase]: 2041/4060 cut-off events. [2024-06-27 18:29:59,060 INFO L125 PetriNetUnfolderBase]: For 91246/91246 co-relation queries the response was YES. [2024-06-27 18:29:59,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23391 conditions, 4060 events. 2041/4060 cut-off events. For 91246/91246 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 29756 event pairs, 390 based on Foata normal form. 2/3810 useless extension candidates. Maximal degree in co-relation 23253. Up to 2027 conditions per place. [2024-06-27 18:29:59,103 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 304 selfloop transitions, 126 changer transitions 0/438 dead transitions. [2024-06-27 18:29:59,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 438 transitions, 6674 flow [2024-06-27 18:29:59,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:29:59,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:29:59,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 18:29:59,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44717444717444715 [2024-06-27 18:29:59,104 INFO L175 Difference]: Start difference. First operand has 295 places, 397 transitions, 5426 flow. Second operand 11 states and 182 transitions. [2024-06-27 18:29:59,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 438 transitions, 6674 flow [2024-06-27 18:29:59,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 438 transitions, 6490 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 18:29:59,534 INFO L231 Difference]: Finished difference. Result has 298 places, 399 transitions, 5539 flow [2024-06-27 18:29:59,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5242, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5539, PETRI_PLACES=298, PETRI_TRANSITIONS=399} [2024-06-27 18:29:59,535 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 257 predicate places. [2024-06-27 18:29:59,535 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 399 transitions, 5539 flow [2024-06-27 18:29:59,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:59,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:59,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:59,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 18:29:59,535 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:59,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:59,536 INFO L85 PathProgramCache]: Analyzing trace with hash -223739712, now seen corresponding path program 8 times [2024-06-27 18:29:59,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:59,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821390134] [2024-06-27 18:29:59,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:59,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:59,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:00,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:00,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:00,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821390134] [2024-06-27 18:30:00,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821390134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:00,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:00,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:00,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990442782] [2024-06-27 18:30:00,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:00,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:00,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:00,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:00,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:00,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:30:00,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 399 transitions, 5539 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:00,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:00,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:30:00,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:01,251 INFO L124 PetriNetUnfolderBase]: 2065/4197 cut-off events. [2024-06-27 18:30:01,251 INFO L125 PetriNetUnfolderBase]: For 93092/93092 co-relation queries the response was YES. [2024-06-27 18:30:01,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24212 conditions, 4197 events. 2065/4197 cut-off events. For 93092/93092 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 31689 event pairs, 658 based on Foata normal form. 1/3899 useless extension candidates. Maximal degree in co-relation 24073. Up to 3260 conditions per place. [2024-06-27 18:30:01,298 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 322 selfloop transitions, 115 changer transitions 0/445 dead transitions. [2024-06-27 18:30:01,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 445 transitions, 6978 flow [2024-06-27 18:30:01,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:30:01,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:30:01,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-27 18:30:01,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4275184275184275 [2024-06-27 18:30:01,299 INFO L175 Difference]: Start difference. First operand has 298 places, 399 transitions, 5539 flow. Second operand 11 states and 174 transitions. [2024-06-27 18:30:01,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 445 transitions, 6978 flow [2024-06-27 18:30:01,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 445 transitions, 6766 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-27 18:30:01,798 INFO L231 Difference]: Finished difference. Result has 300 places, 417 transitions, 5843 flow [2024-06-27 18:30:01,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5333, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5843, PETRI_PLACES=300, PETRI_TRANSITIONS=417} [2024-06-27 18:30:01,799 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 259 predicate places. [2024-06-27 18:30:01,799 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 417 transitions, 5843 flow [2024-06-27 18:30:01,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:01,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:01,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:01,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 18:30:01,800 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:01,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:01,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1051820047, now seen corresponding path program 12 times [2024-06-27 18:30:01,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:01,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851120177] [2024-06-27 18:30:01,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:01,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:01,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:02,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:02,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:02,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851120177] [2024-06-27 18:30:02,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851120177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:02,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:02,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:02,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659637657] [2024-06-27 18:30:02,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:02,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:02,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:02,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:02,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:02,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:30:02,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 417 transitions, 5843 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:02,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:02,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:30:02,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:03,689 INFO L124 PetriNetUnfolderBase]: 2179/4488 cut-off events. [2024-06-27 18:30:03,689 INFO L125 PetriNetUnfolderBase]: For 92758/92758 co-relation queries the response was YES. [2024-06-27 18:30:03,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25273 conditions, 4488 events. 2179/4488 cut-off events. For 92758/92758 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 34817 event pairs, 719 based on Foata normal form. 2/4176 useless extension candidates. Maximal degree in co-relation 25134. Up to 3419 conditions per place. [2024-06-27 18:30:03,737 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 344 selfloop transitions, 104 changer transitions 0/456 dead transitions. [2024-06-27 18:30:03,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 456 transitions, 7071 flow [2024-06-27 18:30:03,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:30:03,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:30:03,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-27 18:30:03,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4275184275184275 [2024-06-27 18:30:03,738 INFO L175 Difference]: Start difference. First operand has 300 places, 417 transitions, 5843 flow. Second operand 11 states and 174 transitions. [2024-06-27 18:30:03,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 456 transitions, 7071 flow [2024-06-27 18:30:04,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 456 transitions, 6907 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 18:30:04,228 INFO L231 Difference]: Finished difference. Result has 304 places, 426 transitions, 6062 flow [2024-06-27 18:30:04,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5679, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6062, PETRI_PLACES=304, PETRI_TRANSITIONS=426} [2024-06-27 18:30:04,229 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 263 predicate places. [2024-06-27 18:30:04,229 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 426 transitions, 6062 flow [2024-06-27 18:30:04,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:04,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:04,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:04,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 18:30:04,229 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:04,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:04,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1249267777, now seen corresponding path program 13 times [2024-06-27 18:30:04,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:04,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368884847] [2024-06-27 18:30:04,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:04,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:04,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:05,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:05,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:05,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368884847] [2024-06-27 18:30:05,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368884847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:05,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:05,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:05,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709424724] [2024-06-27 18:30:05,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:05,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:05,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:05,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:05,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:05,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:30:05,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 426 transitions, 6062 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:05,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:05,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:30:05,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:06,377 INFO L124 PetriNetUnfolderBase]: 2217/4524 cut-off events. [2024-06-27 18:30:06,377 INFO L125 PetriNetUnfolderBase]: For 96856/96856 co-relation queries the response was YES. [2024-06-27 18:30:06,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25903 conditions, 4524 events. 2217/4524 cut-off events. For 96856/96856 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 34994 event pairs, 618 based on Foata normal form. 2/4221 useless extension candidates. Maximal degree in co-relation 25763. Up to 2766 conditions per place. [2024-06-27 18:30:06,417 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 328 selfloop transitions, 126 changer transitions 0/462 dead transitions. [2024-06-27 18:30:06,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 462 transitions, 7333 flow [2024-06-27 18:30:06,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:30:06,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:30:06,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-27 18:30:06,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2024-06-27 18:30:06,418 INFO L175 Difference]: Start difference. First operand has 304 places, 426 transitions, 6062 flow. Second operand 11 states and 178 transitions. [2024-06-27 18:30:06,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 462 transitions, 7333 flow [2024-06-27 18:30:06,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 462 transitions, 7132 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 18:30:06,873 INFO L231 Difference]: Finished difference. Result has 306 places, 429 transitions, 6179 flow [2024-06-27 18:30:06,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5861, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6179, PETRI_PLACES=306, PETRI_TRANSITIONS=429} [2024-06-27 18:30:06,873 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 265 predicate places. [2024-06-27 18:30:06,873 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 429 transitions, 6179 flow [2024-06-27 18:30:06,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:06,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:06,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:06,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 18:30:06,874 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:06,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:06,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1824447528, now seen corresponding path program 9 times [2024-06-27 18:30:06,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:06,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010796197] [2024-06-27 18:30:06,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:06,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:06,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:07,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:07,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:07,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010796197] [2024-06-27 18:30:07,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010796197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:07,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:07,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:07,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598994902] [2024-06-27 18:30:07,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:07,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:07,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:07,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:07,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:07,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:30:07,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 429 transitions, 6179 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:07,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:07,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:30:07,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:08,844 INFO L124 PetriNetUnfolderBase]: 2233/4611 cut-off events. [2024-06-27 18:30:08,845 INFO L125 PetriNetUnfolderBase]: For 99905/99905 co-relation queries the response was YES. [2024-06-27 18:30:08,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26614 conditions, 4611 events. 2233/4611 cut-off events. For 99905/99905 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 36054 event pairs, 744 based on Foata normal form. 1/4283 useless extension candidates. Maximal degree in co-relation 26473. Up to 3723 conditions per place. [2024-06-27 18:30:08,891 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 391 selfloop transitions, 61 changer transitions 0/460 dead transitions. [2024-06-27 18:30:08,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 460 transitions, 7375 flow [2024-06-27 18:30:08,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:08,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:08,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-06-27 18:30:08,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41081081081081083 [2024-06-27 18:30:08,892 INFO L175 Difference]: Start difference. First operand has 306 places, 429 transitions, 6179 flow. Second operand 10 states and 152 transitions. [2024-06-27 18:30:08,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 460 transitions, 7375 flow [2024-06-27 18:30:09,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 460 transitions, 7095 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-27 18:30:09,369 INFO L231 Difference]: Finished difference. Result has 305 places, 437 transitions, 6165 flow [2024-06-27 18:30:09,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5899, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6165, PETRI_PLACES=305, PETRI_TRANSITIONS=437} [2024-06-27 18:30:09,370 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 264 predicate places. [2024-06-27 18:30:09,370 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 437 transitions, 6165 flow [2024-06-27 18:30:09,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:09,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:09,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:09,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 18:30:09,370 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:09,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:09,371 INFO L85 PathProgramCache]: Analyzing trace with hash 476638281, now seen corresponding path program 14 times [2024-06-27 18:30:09,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:09,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139392198] [2024-06-27 18:30:09,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:09,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:09,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:10,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:10,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:10,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139392198] [2024-06-27 18:30:10,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139392198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:10,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:10,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:10,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810554599] [2024-06-27 18:30:10,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:10,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:10,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:10,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:10,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:10,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:30:10,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 437 transitions, 6165 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:10,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:10,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:30:10,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:11,357 INFO L124 PetriNetUnfolderBase]: 2347/4906 cut-off events. [2024-06-27 18:30:11,357 INFO L125 PetriNetUnfolderBase]: For 98969/98969 co-relation queries the response was YES. [2024-06-27 18:30:11,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27483 conditions, 4906 events. 2347/4906 cut-off events. For 98969/98969 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 39219 event pairs, 778 based on Foata normal form. 2/4560 useless extension candidates. Maximal degree in co-relation 27343. Up to 3819 conditions per place. [2024-06-27 18:30:11,411 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 405 selfloop transitions, 60 changer transitions 0/473 dead transitions. [2024-06-27 18:30:11,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 473 transitions, 7442 flow [2024-06-27 18:30:11,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:11,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:11,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-27 18:30:11,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-27 18:30:11,412 INFO L175 Difference]: Start difference. First operand has 305 places, 437 transitions, 6165 flow. Second operand 10 states and 155 transitions. [2024-06-27 18:30:11,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 473 transitions, 7442 flow [2024-06-27 18:30:11,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 473 transitions, 7308 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 18:30:12,005 INFO L231 Difference]: Finished difference. Result has 307 places, 446 transitions, 6344 flow [2024-06-27 18:30:12,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6031, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6344, PETRI_PLACES=307, PETRI_TRANSITIONS=446} [2024-06-27 18:30:12,005 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 266 predicate places. [2024-06-27 18:30:12,005 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 446 transitions, 6344 flow [2024-06-27 18:30:12,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:12,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:12,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:12,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 18:30:12,006 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:12,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:12,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1301346746, now seen corresponding path program 10 times [2024-06-27 18:30:12,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:12,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304747337] [2024-06-27 18:30:12,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:12,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:12,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:13,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:13,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:13,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304747337] [2024-06-27 18:30:13,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304747337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:13,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:13,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:13,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164489353] [2024-06-27 18:30:13,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:13,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:13,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:13,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:13,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:13,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:30:13,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 446 transitions, 6344 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:13,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:13,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:30:13,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:14,325 INFO L124 PetriNetUnfolderBase]: 2345/4896 cut-off events. [2024-06-27 18:30:14,325 INFO L125 PetriNetUnfolderBase]: For 96942/96942 co-relation queries the response was YES. [2024-06-27 18:30:14,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27645 conditions, 4896 events. 2345/4896 cut-off events. For 96942/96942 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 39148 event pairs, 752 based on Foata normal form. 1/4538 useless extension candidates. Maximal degree in co-relation 27504. Up to 3768 conditions per place. [2024-06-27 18:30:14,369 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 332 selfloop transitions, 127 changer transitions 0/467 dead transitions. [2024-06-27 18:30:14,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 467 transitions, 7429 flow [2024-06-27 18:30:14,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:30:14,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:30:14,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-27 18:30:14,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4294294294294294 [2024-06-27 18:30:14,370 INFO L175 Difference]: Start difference. First operand has 307 places, 446 transitions, 6344 flow. Second operand 9 states and 143 transitions. [2024-06-27 18:30:14,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 467 transitions, 7429 flow [2024-06-27 18:30:14,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 467 transitions, 7288 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-27 18:30:14,862 INFO L231 Difference]: Finished difference. Result has 309 places, 446 transitions, 6523 flow [2024-06-27 18:30:14,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6203, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6523, PETRI_PLACES=309, PETRI_TRANSITIONS=446} [2024-06-27 18:30:14,863 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 268 predicate places. [2024-06-27 18:30:14,863 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 446 transitions, 6523 flow [2024-06-27 18:30:14,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:14,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:14,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:14,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 18:30:14,863 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:14,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:14,864 INFO L85 PathProgramCache]: Analyzing trace with hash 476494131, now seen corresponding path program 15 times [2024-06-27 18:30:14,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:14,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473575424] [2024-06-27 18:30:14,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:14,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:15,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:15,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:15,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473575424] [2024-06-27 18:30:15,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473575424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:15,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:15,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:15,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231001916] [2024-06-27 18:30:15,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:15,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:15,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:15,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:15,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:15,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:30:15,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 446 transitions, 6523 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:15,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:15,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:30:15,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:17,004 INFO L124 PetriNetUnfolderBase]: 2342/4894 cut-off events. [2024-06-27 18:30:17,004 INFO L125 PetriNetUnfolderBase]: For 95537/95537 co-relation queries the response was YES. [2024-06-27 18:30:17,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27549 conditions, 4894 events. 2342/4894 cut-off events. For 95537/95537 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 39130 event pairs, 768 based on Foata normal form. 2/4552 useless extension candidates. Maximal degree in co-relation 27407. Up to 3643 conditions per place. [2024-06-27 18:30:17,055 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 377 selfloop transitions, 91 changer transitions 0/476 dead transitions. [2024-06-27 18:30:17,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 476 transitions, 7676 flow [2024-06-27 18:30:17,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:30:17,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:30:17,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2024-06-27 18:30:17,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41277641277641275 [2024-06-27 18:30:17,056 INFO L175 Difference]: Start difference. First operand has 309 places, 446 transitions, 6523 flow. Second operand 11 states and 168 transitions. [2024-06-27 18:30:17,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 476 transitions, 7676 flow [2024-06-27 18:30:17,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 476 transitions, 7448 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 18:30:17,569 INFO L231 Difference]: Finished difference. Result has 312 places, 446 transitions, 6509 flow [2024-06-27 18:30:17,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6295, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6509, PETRI_PLACES=312, PETRI_TRANSITIONS=446} [2024-06-27 18:30:17,569 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 271 predicate places. [2024-06-27 18:30:17,569 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 446 transitions, 6509 flow [2024-06-27 18:30:17,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:17,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:17,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:17,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 18:30:17,570 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:17,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:17,570 INFO L85 PathProgramCache]: Analyzing trace with hash 615172166, now seen corresponding path program 11 times [2024-06-27 18:30:17,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:17,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245015968] [2024-06-27 18:30:17,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:17,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:17,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:18,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:18,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:18,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245015968] [2024-06-27 18:30:18,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245015968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:18,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:18,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:18,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533277694] [2024-06-27 18:30:18,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:18,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:18,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:18,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:18,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:18,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:30:18,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 446 transitions, 6509 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:18,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:18,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:30:18,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:19,412 INFO L124 PetriNetUnfolderBase]: 2348/4907 cut-off events. [2024-06-27 18:30:19,412 INFO L125 PetriNetUnfolderBase]: For 92583/92583 co-relation queries the response was YES. [2024-06-27 18:30:19,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27830 conditions, 4907 events. 2348/4907 cut-off events. For 92583/92583 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 39248 event pairs, 731 based on Foata normal form. 1/4552 useless extension candidates. Maximal degree in co-relation 27688. Up to 3735 conditions per place. [2024-06-27 18:30:19,464 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 388 selfloop transitions, 101 changer transitions 0/497 dead transitions. [2024-06-27 18:30:19,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 497 transitions, 8056 flow [2024-06-27 18:30:19,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:19,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:19,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-27 18:30:19,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43513513513513513 [2024-06-27 18:30:19,465 INFO L175 Difference]: Start difference. First operand has 312 places, 446 transitions, 6509 flow. Second operand 10 states and 161 transitions. [2024-06-27 18:30:19,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 497 transitions, 8056 flow [2024-06-27 18:30:19,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 497 transitions, 7869 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 18:30:19,915 INFO L231 Difference]: Finished difference. Result has 318 places, 470 transitions, 6969 flow [2024-06-27 18:30:19,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6322, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6969, PETRI_PLACES=318, PETRI_TRANSITIONS=470} [2024-06-27 18:30:19,915 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 277 predicate places. [2024-06-27 18:30:19,915 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 470 transitions, 6969 flow [2024-06-27 18:30:19,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:19,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:19,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:19,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 18:30:19,916 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:19,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:19,916 INFO L85 PathProgramCache]: Analyzing trace with hash 615166586, now seen corresponding path program 12 times [2024-06-27 18:30:19,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:19,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8383719] [2024-06-27 18:30:19,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:19,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:19,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:20,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:20,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:20,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8383719] [2024-06-27 18:30:20,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8383719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:20,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:20,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:20,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591573641] [2024-06-27 18:30:20,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:20,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:20,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:20,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:20,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:20,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:30:20,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 470 transitions, 6969 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:20,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:20,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:30:20,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:21,847 INFO L124 PetriNetUnfolderBase]: 2385/4962 cut-off events. [2024-06-27 18:30:21,847 INFO L125 PetriNetUnfolderBase]: For 97971/97971 co-relation queries the response was YES. [2024-06-27 18:30:21,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28516 conditions, 4962 events. 2385/4962 cut-off events. For 97971/97971 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 39576 event pairs, 732 based on Foata normal form. 3/4602 useless extension candidates. Maximal degree in co-relation 28369. Up to 3471 conditions per place. [2024-06-27 18:30:21,904 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 337 selfloop transitions, 165 changer transitions 0/510 dead transitions. [2024-06-27 18:30:21,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 510 transitions, 8396 flow [2024-06-27 18:30:21,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:30:21,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:30:21,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 18:30:21,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-27 18:30:21,905 INFO L175 Difference]: Start difference. First operand has 318 places, 470 transitions, 6969 flow. Second operand 11 states and 184 transitions. [2024-06-27 18:30:21,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 510 transitions, 8396 flow [2024-06-27 18:30:22,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 510 transitions, 8289 flow, removed 45 selfloop flow, removed 3 redundant places. [2024-06-27 18:30:22,360 INFO L231 Difference]: Finished difference. Result has 327 places, 479 transitions, 7384 flow [2024-06-27 18:30:22,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6862, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7384, PETRI_PLACES=327, PETRI_TRANSITIONS=479} [2024-06-27 18:30:22,361 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 286 predicate places. [2024-06-27 18:30:22,361 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 479 transitions, 7384 flow [2024-06-27 18:30:22,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:22,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:22,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:22,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 18:30:22,362 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:22,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:22,362 INFO L85 PathProgramCache]: Analyzing trace with hash -852275008, now seen corresponding path program 13 times [2024-06-27 18:30:22,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:22,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916571360] [2024-06-27 18:30:22,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:22,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:23,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:23,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:23,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916571360] [2024-06-27 18:30:23,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916571360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:23,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:23,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:23,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424509136] [2024-06-27 18:30:23,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:23,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:23,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:23,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:23,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:23,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:30:23,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 479 transitions, 7384 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:23,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:23,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:30:23,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:24,179 INFO L124 PetriNetUnfolderBase]: 2391/4969 cut-off events. [2024-06-27 18:30:24,179 INFO L125 PetriNetUnfolderBase]: For 96092/96092 co-relation queries the response was YES. [2024-06-27 18:30:24,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29067 conditions, 4969 events. 2391/4969 cut-off events. For 96092/96092 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 39634 event pairs, 729 based on Foata normal form. 1/4606 useless extension candidates. Maximal degree in co-relation 28917. Up to 3799 conditions per place. [2024-06-27 18:30:24,232 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 386 selfloop transitions, 117 changer transitions 0/511 dead transitions. [2024-06-27 18:30:24,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 511 transitions, 8746 flow [2024-06-27 18:30:24,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:24,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:24,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-27 18:30:24,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297297297297297 [2024-06-27 18:30:24,233 INFO L175 Difference]: Start difference. First operand has 327 places, 479 transitions, 7384 flow. Second operand 10 states and 159 transitions. [2024-06-27 18:30:24,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 511 transitions, 8746 flow [2024-06-27 18:30:24,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 511 transitions, 8368 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-27 18:30:24,770 INFO L231 Difference]: Finished difference. Result has 329 places, 484 transitions, 7347 flow [2024-06-27 18:30:24,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7012, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7347, PETRI_PLACES=329, PETRI_TRANSITIONS=484} [2024-06-27 18:30:24,770 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 288 predicate places. [2024-06-27 18:30:24,771 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 484 transitions, 7347 flow [2024-06-27 18:30:24,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:24,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:24,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:24,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 18:30:24,771 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:24,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:24,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1685925113, now seen corresponding path program 16 times [2024-06-27 18:30:24,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:24,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633070116] [2024-06-27 18:30:24,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:24,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:25,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:25,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:25,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633070116] [2024-06-27 18:30:25,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633070116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:25,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:25,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:25,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434584237] [2024-06-27 18:30:25,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:25,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:25,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:25,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:25,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:25,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:30:25,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 484 transitions, 7347 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:25,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:25,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:30:25,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:26,793 INFO L124 PetriNetUnfolderBase]: 2425/5051 cut-off events. [2024-06-27 18:30:26,793 INFO L125 PetriNetUnfolderBase]: For 94875/94875 co-relation queries the response was YES. [2024-06-27 18:30:26,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29049 conditions, 5051 events. 2425/5051 cut-off events. For 94875/94875 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 40492 event pairs, 759 based on Foata normal form. 2/4685 useless extension candidates. Maximal degree in co-relation 28898. Up to 3939 conditions per place. [2024-06-27 18:30:26,850 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 420 selfloop transitions, 83 changer transitions 0/511 dead transitions. [2024-06-27 18:30:26,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 511 transitions, 8592 flow [2024-06-27 18:30:26,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:26,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:26,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-27 18:30:26,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 18:30:26,851 INFO L175 Difference]: Start difference. First operand has 329 places, 484 transitions, 7347 flow. Second operand 10 states and 160 transitions. [2024-06-27 18:30:26,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 511 transitions, 8592 flow [2024-06-27 18:30:27,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 511 transitions, 8371 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 18:30:27,429 INFO L231 Difference]: Finished difference. Result has 333 places, 486 transitions, 7332 flow [2024-06-27 18:30:27,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7126, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7332, PETRI_PLACES=333, PETRI_TRANSITIONS=486} [2024-06-27 18:30:27,430 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 292 predicate places. [2024-06-27 18:30:27,430 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 486 transitions, 7332 flow [2024-06-27 18:30:27,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:27,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:27,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:27,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 18:30:27,431 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:27,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:27,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1680562733, now seen corresponding path program 17 times [2024-06-27 18:30:27,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:27,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79583201] [2024-06-27 18:30:27,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:27,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:27,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:28,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:28,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:28,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79583201] [2024-06-27 18:30:28,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79583201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:28,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:28,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:28,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315267485] [2024-06-27 18:30:28,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:28,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:28,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:28,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:28,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:28,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:30:28,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 486 transitions, 7332 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:28,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:28,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:30:28,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:29,470 INFO L124 PetriNetUnfolderBase]: 2442/5089 cut-off events. [2024-06-27 18:30:29,470 INFO L125 PetriNetUnfolderBase]: For 97576/97576 co-relation queries the response was YES. [2024-06-27 18:30:29,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29261 conditions, 5089 events. 2442/5089 cut-off events. For 97576/97576 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 40883 event pairs, 760 based on Foata normal form. 2/4720 useless extension candidates. Maximal degree in co-relation 29109. Up to 3970 conditions per place. [2024-06-27 18:30:29,535 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 419 selfloop transitions, 87 changer transitions 0/514 dead transitions. [2024-06-27 18:30:29,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 514 transitions, 8610 flow [2024-06-27 18:30:29,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:29,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:29,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-27 18:30:29,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297297297297297 [2024-06-27 18:30:29,536 INFO L175 Difference]: Start difference. First operand has 333 places, 486 transitions, 7332 flow. Second operand 10 states and 159 transitions. [2024-06-27 18:30:29,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 514 transitions, 8610 flow [2024-06-27 18:30:30,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 514 transitions, 8428 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 18:30:30,148 INFO L231 Difference]: Finished difference. Result has 335 places, 487 transitions, 7358 flow [2024-06-27 18:30:30,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7150, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7358, PETRI_PLACES=335, PETRI_TRANSITIONS=487} [2024-06-27 18:30:30,149 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 294 predicate places. [2024-06-27 18:30:30,149 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 487 transitions, 7358 flow [2024-06-27 18:30:30,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:30,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:30,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:30,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 18:30:30,149 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:30,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:30,150 INFO L85 PathProgramCache]: Analyzing trace with hash 615022436, now seen corresponding path program 14 times [2024-06-27 18:30:30,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:30,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396329505] [2024-06-27 18:30:30,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:30,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:30,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:30,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:30,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:30,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396329505] [2024-06-27 18:30:30,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396329505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:30,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:30,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:30,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523029657] [2024-06-27 18:30:30,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:30,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:30,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:30,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:30,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:31,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:30:31,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 487 transitions, 7358 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:31,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:31,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:30:31,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:32,237 INFO L124 PetriNetUnfolderBase]: 2473/5137 cut-off events. [2024-06-27 18:30:32,237 INFO L125 PetriNetUnfolderBase]: For 106262/106262 co-relation queries the response was YES. [2024-06-27 18:30:32,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30004 conditions, 5137 events. 2473/5137 cut-off events. For 106262/106262 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 41234 event pairs, 741 based on Foata normal form. 1/4760 useless extension candidates. Maximal degree in co-relation 29851. Up to 3496 conditions per place. [2024-06-27 18:30:32,296 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 328 selfloop transitions, 191 changer transitions 0/527 dead transitions. [2024-06-27 18:30:32,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 527 transitions, 8983 flow [2024-06-27 18:30:32,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:30:32,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:30:32,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 202 transitions. [2024-06-27 18:30:32,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45495495495495497 [2024-06-27 18:30:32,297 INFO L175 Difference]: Start difference. First operand has 335 places, 487 transitions, 7358 flow. Second operand 12 states and 202 transitions. [2024-06-27 18:30:32,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 527 transitions, 8983 flow [2024-06-27 18:30:32,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 527 transitions, 8785 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 18:30:32,886 INFO L231 Difference]: Finished difference. Result has 340 places, 492 transitions, 7757 flow [2024-06-27 18:30:32,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7162, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7757, PETRI_PLACES=340, PETRI_TRANSITIONS=492} [2024-06-27 18:30:32,886 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 299 predicate places. [2024-06-27 18:30:32,886 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 492 transitions, 7757 flow [2024-06-27 18:30:32,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:32,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:32,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:32,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 18:30:32,894 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:32,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:32,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1445242856, now seen corresponding path program 15 times [2024-06-27 18:30:32,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:32,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594958000] [2024-06-27 18:30:32,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:32,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:33,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:33,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:33,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594958000] [2024-06-27 18:30:33,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594958000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:33,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:33,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:33,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006893157] [2024-06-27 18:30:33,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:33,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:33,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:33,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:33,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:33,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:30:33,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 492 transitions, 7757 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:33,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:33,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:30:33,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:34,796 INFO L124 PetriNetUnfolderBase]: 2485/5153 cut-off events. [2024-06-27 18:30:34,796 INFO L125 PetriNetUnfolderBase]: For 107800/107800 co-relation queries the response was YES. [2024-06-27 18:30:34,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30645 conditions, 5153 events. 2485/5153 cut-off events. For 107800/107800 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 41385 event pairs, 739 based on Foata normal form. 1/4774 useless extension candidates. Maximal degree in co-relation 30490. Up to 3956 conditions per place. [2024-06-27 18:30:34,855 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 410 selfloop transitions, 107 changer transitions 0/525 dead transitions. [2024-06-27 18:30:34,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 525 transitions, 9182 flow [2024-06-27 18:30:34,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:34,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:34,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-27 18:30:34,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 18:30:34,856 INFO L175 Difference]: Start difference. First operand has 340 places, 492 transitions, 7757 flow. Second operand 10 states and 160 transitions. [2024-06-27 18:30:34,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 525 transitions, 9182 flow [2024-06-27 18:30:35,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 525 transitions, 8928 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-27 18:30:35,566 INFO L231 Difference]: Finished difference. Result has 342 places, 496 transitions, 7824 flow [2024-06-27 18:30:35,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7511, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7824, PETRI_PLACES=342, PETRI_TRANSITIONS=496} [2024-06-27 18:30:35,567 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 301 predicate places. [2024-06-27 18:30:35,567 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 496 transitions, 7824 flow [2024-06-27 18:30:35,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:35,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:35,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:35,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 18:30:35,567 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:35,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:35,568 INFO L85 PathProgramCache]: Analyzing trace with hash 615022281, now seen corresponding path program 18 times [2024-06-27 18:30:35,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:35,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377883321] [2024-06-27 18:30:35,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:35,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:36,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:36,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:36,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377883321] [2024-06-27 18:30:36,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377883321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:36,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:36,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:36,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958204739] [2024-06-27 18:30:36,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:36,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:36,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:36,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:36,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:36,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:30:36,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 496 transitions, 7824 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:36,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:36,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:30:36,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:37,707 INFO L124 PetriNetUnfolderBase]: 2502/5194 cut-off events. [2024-06-27 18:30:37,707 INFO L125 PetriNetUnfolderBase]: For 111277/111277 co-relation queries the response was YES. [2024-06-27 18:30:37,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31031 conditions, 5194 events. 2502/5194 cut-off events. For 111277/111277 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 41736 event pairs, 779 based on Foata normal form. 2/4818 useless extension candidates. Maximal degree in co-relation 30874. Up to 3991 conditions per place. [2024-06-27 18:30:37,761 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 419 selfloop transitions, 97 changer transitions 0/524 dead transitions. [2024-06-27 18:30:37,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 524 transitions, 9109 flow [2024-06-27 18:30:37,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:30:37,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:30:37,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-27 18:30:37,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4275184275184275 [2024-06-27 18:30:37,762 INFO L175 Difference]: Start difference. First operand has 342 places, 496 transitions, 7824 flow. Second operand 11 states and 174 transitions. [2024-06-27 18:30:37,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 524 transitions, 9109 flow [2024-06-27 18:30:38,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 524 transitions, 8888 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 18:30:38,357 INFO L231 Difference]: Finished difference. Result has 346 places, 497 transitions, 7835 flow [2024-06-27 18:30:38,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7603, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7835, PETRI_PLACES=346, PETRI_TRANSITIONS=497} [2024-06-27 18:30:38,357 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 305 predicate places. [2024-06-27 18:30:38,357 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 497 transitions, 7835 flow [2024-06-27 18:30:38,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:38,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:38,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:38,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 18:30:38,358 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:38,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:38,358 INFO L85 PathProgramCache]: Analyzing trace with hash 620528966, now seen corresponding path program 16 times [2024-06-27 18:30:38,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:38,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807137607] [2024-06-27 18:30:38,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:38,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:38,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:39,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:39,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:39,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807137607] [2024-06-27 18:30:39,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807137607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:39,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:39,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:39,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104824552] [2024-06-27 18:30:39,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:39,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:39,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:39,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:39,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:39,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:30:39,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 497 transitions, 7835 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:39,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:39,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:30:39,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:40,385 INFO L124 PetriNetUnfolderBase]: 2513/5208 cut-off events. [2024-06-27 18:30:40,385 INFO L125 PetriNetUnfolderBase]: For 114667/114667 co-relation queries the response was YES. [2024-06-27 18:30:40,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31205 conditions, 5208 events. 2513/5208 cut-off events. For 114667/114667 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 41797 event pairs, 752 based on Foata normal form. 3/4826 useless extension candidates. Maximal degree in co-relation 31047. Up to 3642 conditions per place. [2024-06-27 18:30:40,445 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 350 selfloop transitions, 176 changer transitions 0/534 dead transitions. [2024-06-27 18:30:40,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 534 transitions, 9409 flow [2024-06-27 18:30:40,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:30:40,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:30:40,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 18:30:40,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:30:40,446 INFO L175 Difference]: Start difference. First operand has 346 places, 497 transitions, 7835 flow. Second operand 11 states and 187 transitions. [2024-06-27 18:30:40,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 534 transitions, 9409 flow [2024-06-27 18:30:41,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 534 transitions, 9191 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-27 18:30:41,091 INFO L231 Difference]: Finished difference. Result has 348 places, 499 transitions, 8055 flow [2024-06-27 18:30:41,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7621, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8055, PETRI_PLACES=348, PETRI_TRANSITIONS=499} [2024-06-27 18:30:41,092 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 307 predicate places. [2024-06-27 18:30:41,092 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 499 transitions, 8055 flow [2024-06-27 18:30:41,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:41,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:41,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:41,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 18:30:41,092 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:41,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:41,093 INFO L85 PathProgramCache]: Analyzing trace with hash 615018561, now seen corresponding path program 19 times [2024-06-27 18:30:41,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:41,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252447049] [2024-06-27 18:30:41,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:41,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:41,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:41,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:41,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252447049] [2024-06-27 18:30:41,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252447049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:41,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:41,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:41,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014313875] [2024-06-27 18:30:41,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:41,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:41,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:41,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:41,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:42,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:30:42,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 499 transitions, 8055 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:42,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:42,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:30:42,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:43,159 INFO L124 PetriNetUnfolderBase]: 2530/5246 cut-off events. [2024-06-27 18:30:43,159 INFO L125 PetriNetUnfolderBase]: For 110329/110329 co-relation queries the response was YES. [2024-06-27 18:30:43,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31591 conditions, 5246 events. 2530/5246 cut-off events. For 110329/110329 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 42207 event pairs, 762 based on Foata normal form. 2/4868 useless extension candidates. Maximal degree in co-relation 31432. Up to 3892 conditions per place. [2024-06-27 18:30:43,219 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 421 selfloop transitions, 99 changer transitions 0/528 dead transitions. [2024-06-27 18:30:43,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 528 transitions, 9323 flow [2024-06-27 18:30:43,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:43,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:43,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-27 18:30:43,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-27 18:30:43,220 INFO L175 Difference]: Start difference. First operand has 348 places, 499 transitions, 8055 flow. Second operand 10 states and 165 transitions. [2024-06-27 18:30:43,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 528 transitions, 9323 flow [2024-06-27 18:30:43,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 528 transitions, 8920 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-27 18:30:43,832 INFO L231 Difference]: Finished difference. Result has 349 places, 500 transitions, 7882 flow [2024-06-27 18:30:43,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7652, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7882, PETRI_PLACES=349, PETRI_TRANSITIONS=500} [2024-06-27 18:30:43,832 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 308 predicate places. [2024-06-27 18:30:43,832 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 500 transitions, 7882 flow [2024-06-27 18:30:43,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:43,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:43,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:43,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 18:30:43,833 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:43,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:43,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1836977606, now seen corresponding path program 17 times [2024-06-27 18:30:43,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:43,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811443129] [2024-06-27 18:30:43,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:43,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:44,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:44,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:44,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811443129] [2024-06-27 18:30:44,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811443129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:44,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:44,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:44,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831697634] [2024-06-27 18:30:44,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:44,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:44,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:44,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:44,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:44,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:30:44,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 500 transitions, 7882 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:44,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:44,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:30:44,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:45,722 INFO L124 PetriNetUnfolderBase]: 2536/5259 cut-off events. [2024-06-27 18:30:45,723 INFO L125 PetriNetUnfolderBase]: For 108321/108321 co-relation queries the response was YES. [2024-06-27 18:30:45,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31401 conditions, 5259 events. 2536/5259 cut-off events. For 108321/108321 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 42301 event pairs, 946 based on Foata normal form. 1/4871 useless extension candidates. Maximal degree in co-relation 31241. Up to 4315 conditions per place. [2024-06-27 18:30:45,787 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 495 selfloop transitions, 20 changer transitions 0/523 dead transitions. [2024-06-27 18:30:45,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 523 transitions, 9161 flow [2024-06-27 18:30:45,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:45,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:45,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 146 transitions. [2024-06-27 18:30:45,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3945945945945946 [2024-06-27 18:30:45,787 INFO L175 Difference]: Start difference. First operand has 349 places, 500 transitions, 7882 flow. Second operand 10 states and 146 transitions. [2024-06-27 18:30:45,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 523 transitions, 9161 flow [2024-06-27 18:30:46,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 523 transitions, 8943 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 18:30:46,471 INFO L231 Difference]: Finished difference. Result has 352 places, 507 transitions, 7837 flow [2024-06-27 18:30:46,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7664, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7837, PETRI_PLACES=352, PETRI_TRANSITIONS=507} [2024-06-27 18:30:46,471 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 311 predicate places. [2024-06-27 18:30:46,471 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 507 transitions, 7837 flow [2024-06-27 18:30:46,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:46,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:46,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:46,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 18:30:46,472 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:46,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:46,472 INFO L85 PathProgramCache]: Analyzing trace with hash 188927227, now seen corresponding path program 1 times [2024-06-27 18:30:46,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:46,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741548770] [2024-06-27 18:30:46,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:46,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:46,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:47,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:47,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:47,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741548770] [2024-06-27 18:30:47,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741548770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:47,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:47,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:47,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529257529] [2024-06-27 18:30:47,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:47,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:47,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:47,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:47,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:47,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:30:47,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 507 transitions, 7837 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:47,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:47,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:30:47,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:48,503 INFO L124 PetriNetUnfolderBase]: 2532/5254 cut-off events. [2024-06-27 18:30:48,503 INFO L125 PetriNetUnfolderBase]: For 104057/104057 co-relation queries the response was YES. [2024-06-27 18:30:48,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30863 conditions, 5254 events. 2532/5254 cut-off events. For 104057/104057 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 42268 event pairs, 940 based on Foata normal form. 2/4867 useless extension candidates. Maximal degree in co-relation 30701. Up to 4290 conditions per place. [2024-06-27 18:30:48,570 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 502 selfloop transitions, 18 changer transitions 0/528 dead transitions. [2024-06-27 18:30:48,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 528 transitions, 9057 flow [2024-06-27 18:30:48,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:30:48,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:30:48,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 159 transitions. [2024-06-27 18:30:48,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906633906633907 [2024-06-27 18:30:48,571 INFO L175 Difference]: Start difference. First operand has 352 places, 507 transitions, 7837 flow. Second operand 11 states and 159 transitions. [2024-06-27 18:30:48,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 528 transitions, 9057 flow [2024-06-27 18:30:49,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 528 transitions, 8986 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-27 18:30:49,181 INFO L231 Difference]: Finished difference. Result has 358 places, 509 transitions, 7853 flow [2024-06-27 18:30:49,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7766, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7853, PETRI_PLACES=358, PETRI_TRANSITIONS=509} [2024-06-27 18:30:49,181 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 317 predicate places. [2024-06-27 18:30:49,181 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 509 transitions, 7853 flow [2024-06-27 18:30:49,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:49,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:49,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:49,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 18:30:49,182 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:49,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:49,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1654314079, now seen corresponding path program 20 times [2024-06-27 18:30:49,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:49,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325941493] [2024-06-27 18:30:49,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:49,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:49,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:49,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:49,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:49,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325941493] [2024-06-27 18:30:49,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325941493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:49,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:49,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:49,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310607284] [2024-06-27 18:30:49,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:49,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:49,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:49,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:49,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:50,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:30:50,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 509 transitions, 7853 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:50,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:50,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:30:50,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:51,168 INFO L124 PetriNetUnfolderBase]: 2549/5296 cut-off events. [2024-06-27 18:30:51,168 INFO L125 PetriNetUnfolderBase]: For 106364/106364 co-relation queries the response was YES. [2024-06-27 18:30:51,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31122 conditions, 5296 events. 2549/5296 cut-off events. For 106364/106364 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 42775 event pairs, 949 based on Foata normal form. 2/4907 useless extension candidates. Maximal degree in co-relation 30958. Up to 4324 conditions per place. [2024-06-27 18:30:51,243 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 503 selfloop transitions, 19 changer transitions 0/530 dead transitions. [2024-06-27 18:30:51,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 530 transitions, 9073 flow [2024-06-27 18:30:51,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:51,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:51,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-06-27 18:30:51,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027027027027027 [2024-06-27 18:30:51,244 INFO L175 Difference]: Start difference. First operand has 358 places, 509 transitions, 7853 flow. Second operand 10 states and 149 transitions. [2024-06-27 18:30:51,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 530 transitions, 9073 flow [2024-06-27 18:30:51,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 530 transitions, 9006 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 18:30:51,883 INFO L231 Difference]: Finished difference. Result has 359 places, 510 transitions, 7854 flow [2024-06-27 18:30:51,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7786, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7854, PETRI_PLACES=359, PETRI_TRANSITIONS=510} [2024-06-27 18:30:51,883 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 318 predicate places. [2024-06-27 18:30:51,884 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 510 transitions, 7854 flow [2024-06-27 18:30:51,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:51,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:51,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:51,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 18:30:51,884 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:51,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:51,885 INFO L85 PathProgramCache]: Analyzing trace with hash -35280758, now seen corresponding path program 18 times [2024-06-27 18:30:51,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:51,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887825166] [2024-06-27 18:30:51,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:51,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:51,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:52,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:52,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:52,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887825166] [2024-06-27 18:30:52,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887825166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:52,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:52,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:52,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668020273] [2024-06-27 18:30:52,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:52,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:52,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:52,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:52,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:52,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:30:52,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 510 transitions, 7854 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:52,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:52,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:30:52,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:54,013 INFO L124 PetriNetUnfolderBase]: 2563/5315 cut-off events. [2024-06-27 18:30:54,013 INFO L125 PetriNetUnfolderBase]: For 109574/109574 co-relation queries the response was YES. [2024-06-27 18:30:54,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31476 conditions, 5315 events. 2563/5315 cut-off events. For 109574/109574 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 42856 event pairs, 939 based on Foata normal form. 1/4922 useless extension candidates. Maximal degree in co-relation 31311. Up to 4310 conditions per place. [2024-06-27 18:30:54,072 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 493 selfloop transitions, 37 changer transitions 0/538 dead transitions. [2024-06-27 18:30:54,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 538 transitions, 9431 flow [2024-06-27 18:30:54,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:54,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:54,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-06-27 18:30:54,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4081081081081081 [2024-06-27 18:30:54,073 INFO L175 Difference]: Start difference. First operand has 359 places, 510 transitions, 7854 flow. Second operand 10 states and 151 transitions. [2024-06-27 18:30:54,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 538 transitions, 9431 flow [2024-06-27 18:30:54,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 538 transitions, 9373 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 18:30:54,624 INFO L231 Difference]: Finished difference. Result has 362 places, 519 transitions, 8083 flow [2024-06-27 18:30:54,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7796, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8083, PETRI_PLACES=362, PETRI_TRANSITIONS=519} [2024-06-27 18:30:54,624 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 321 predicate places. [2024-06-27 18:30:54,624 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 519 transitions, 8083 flow [2024-06-27 18:30:54,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:54,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:54,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:54,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 18:30:54,625 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:54,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:54,625 INFO L85 PathProgramCache]: Analyzing trace with hash -35275178, now seen corresponding path program 19 times [2024-06-27 18:30:54,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:54,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110131399] [2024-06-27 18:30:54,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:54,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:54,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:55,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:55,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:55,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110131399] [2024-06-27 18:30:55,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110131399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:55,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:55,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:55,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851716090] [2024-06-27 18:30:55,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:55,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:55,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:55,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:55,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:55,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:30:55,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 519 transitions, 8083 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:55,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:55,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:30:55,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:56,745 INFO L124 PetriNetUnfolderBase]: 2569/5324 cut-off events. [2024-06-27 18:30:56,745 INFO L125 PetriNetUnfolderBase]: For 111826/111826 co-relation queries the response was YES. [2024-06-27 18:30:56,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31623 conditions, 5324 events. 2569/5324 cut-off events. For 111826/111826 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 42953 event pairs, 939 based on Foata normal form. 1/4930 useless extension candidates. Maximal degree in co-relation 31456. Up to 4341 conditions per place. [2024-06-27 18:30:56,797 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 498 selfloop transitions, 35 changer transitions 0/541 dead transitions. [2024-06-27 18:30:56,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 541 transitions, 9424 flow [2024-06-27 18:30:56,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:56,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:56,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-06-27 18:30:56,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027027027027027 [2024-06-27 18:30:56,798 INFO L175 Difference]: Start difference. First operand has 362 places, 519 transitions, 8083 flow. Second operand 10 states and 149 transitions. [2024-06-27 18:30:56,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 541 transitions, 9424 flow [2024-06-27 18:30:57,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 541 transitions, 9319 flow, removed 46 selfloop flow, removed 4 redundant places. [2024-06-27 18:30:57,329 INFO L231 Difference]: Finished difference. Result has 368 places, 523 transitions, 8157 flow [2024-06-27 18:30:57,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7994, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8157, PETRI_PLACES=368, PETRI_TRANSITIONS=523} [2024-06-27 18:30:57,329 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 327 predicate places. [2024-06-27 18:30:57,329 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 523 transitions, 8157 flow [2024-06-27 18:30:57,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:57,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:57,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:57,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 18:30:57,330 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:57,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:57,330 INFO L85 PathProgramCache]: Analyzing trace with hash 630843499, now seen corresponding path program 21 times [2024-06-27 18:30:57,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:57,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388148184] [2024-06-27 18:30:57,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:57,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:58,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:58,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:58,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388148184] [2024-06-27 18:30:58,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388148184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:58,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:58,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:58,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188282525] [2024-06-27 18:30:58,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:58,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:58,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:58,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:58,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:58,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:30:58,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 523 transitions, 8157 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:58,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:58,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:30:58,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:59,609 INFO L124 PetriNetUnfolderBase]: 2586/5363 cut-off events. [2024-06-27 18:30:59,609 INFO L125 PetriNetUnfolderBase]: For 116753/116753 co-relation queries the response was YES. [2024-06-27 18:30:59,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31829 conditions, 5363 events. 2586/5363 cut-off events. For 116753/116753 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 43294 event pairs, 944 based on Foata normal form. 2/4968 useless extension candidates. Maximal degree in co-relation 31660. Up to 4356 conditions per place. [2024-06-27 18:30:59,662 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 504 selfloop transitions, 32 changer transitions 0/544 dead transitions. [2024-06-27 18:30:59,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 544 transitions, 9410 flow [2024-06-27 18:30:59,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:59,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:59,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-27 18:30:59,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4135135135135135 [2024-06-27 18:30:59,663 INFO L175 Difference]: Start difference. First operand has 368 places, 523 transitions, 8157 flow. Second operand 10 states and 153 transitions. [2024-06-27 18:30:59,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 544 transitions, 9410 flow [2024-06-27 18:31:00,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 544 transitions, 9304 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 18:31:00,227 INFO L231 Difference]: Finished difference. Result has 371 places, 524 transitions, 8147 flow [2024-06-27 18:31:00,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8051, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8147, PETRI_PLACES=371, PETRI_TRANSITIONS=524} [2024-06-27 18:31:00,228 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 330 predicate places. [2024-06-27 18:31:00,228 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 524 transitions, 8147 flow [2024-06-27 18:31:00,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:00,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:00,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:00,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 18:31:00,228 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:00,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:00,229 INFO L85 PathProgramCache]: Analyzing trace with hash -35073368, now seen corresponding path program 20 times [2024-06-27 18:31:00,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:00,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329118563] [2024-06-27 18:31:00,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:00,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:00,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:00,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:00,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:00,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329118563] [2024-06-27 18:31:00,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329118563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:00,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:00,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:31:00,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9807810] [2024-06-27 18:31:00,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:00,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:31:00,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:00,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:31:00,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:31:01,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:31:01,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 524 transitions, 8147 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:01,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:01,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:31:01,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:02,319 INFO L124 PetriNetUnfolderBase]: 2584/5363 cut-off events. [2024-06-27 18:31:02,319 INFO L125 PetriNetUnfolderBase]: For 112154/112154 co-relation queries the response was YES. [2024-06-27 18:31:02,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31711 conditions, 5363 events. 2584/5363 cut-off events. For 112154/112154 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 43319 event pairs, 947 based on Foata normal form. 1/4966 useless extension candidates. Maximal degree in co-relation 31541. Up to 4369 conditions per place. [2024-06-27 18:31:02,374 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 498 selfloop transitions, 35 changer transitions 0/541 dead transitions. [2024-06-27 18:31:02,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 541 transitions, 9370 flow [2024-06-27 18:31:02,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:31:02,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:31:02,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-06-27 18:31:02,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40540540540540543 [2024-06-27 18:31:02,375 INFO L175 Difference]: Start difference. First operand has 371 places, 524 transitions, 8147 flow. Second operand 10 states and 150 transitions. [2024-06-27 18:31:02,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 541 transitions, 9370 flow [2024-06-27 18:31:02,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 541 transitions, 9250 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-27 18:31:02,910 INFO L231 Difference]: Finished difference. Result has 373 places, 524 transitions, 8103 flow [2024-06-27 18:31:02,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8027, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8103, PETRI_PLACES=373, PETRI_TRANSITIONS=524} [2024-06-27 18:31:02,911 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 332 predicate places. [2024-06-27 18:31:02,911 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 524 transitions, 8103 flow [2024-06-27 18:31:02,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:02,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:02,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:02,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 18:31:02,911 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:02,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:02,912 INFO L85 PathProgramCache]: Analyzing trace with hash 631051044, now seen corresponding path program 21 times [2024-06-27 18:31:02,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:02,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162069450] [2024-06-27 18:31:02,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:02,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:02,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:03,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:03,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:03,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162069450] [2024-06-27 18:31:03,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162069450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:03,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:03,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:31:03,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844106207] [2024-06-27 18:31:03,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:03,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:31:03,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:03,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:31:03,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:31:03,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:31:03,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 524 transitions, 8103 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:03,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:03,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:31:03,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:05,003 INFO L124 PetriNetUnfolderBase]: 2590/5369 cut-off events. [2024-06-27 18:31:05,003 INFO L125 PetriNetUnfolderBase]: For 113231/113231 co-relation queries the response was YES. [2024-06-27 18:31:05,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31642 conditions, 5369 events. 2590/5369 cut-off events. For 113231/113231 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 43334 event pairs, 936 based on Foata normal form. 1/4971 useless extension candidates. Maximal degree in co-relation 31471. Up to 4325 conditions per place. [2024-06-27 18:31:05,060 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 484 selfloop transitions, 54 changer transitions 0/546 dead transitions. [2024-06-27 18:31:05,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 546 transitions, 9441 flow [2024-06-27 18:31:05,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:31:05,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:31:05,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-27 18:31:05,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4135135135135135 [2024-06-27 18:31:05,061 INFO L175 Difference]: Start difference. First operand has 373 places, 524 transitions, 8103 flow. Second operand 10 states and 153 transitions. [2024-06-27 18:31:05,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 546 transitions, 9441 flow [2024-06-27 18:31:05,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 546 transitions, 9330 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-27 18:31:05,671 INFO L231 Difference]: Finished difference. Result has 375 places, 529 transitions, 8227 flow [2024-06-27 18:31:05,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7992, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8227, PETRI_PLACES=375, PETRI_TRANSITIONS=529} [2024-06-27 18:31:05,672 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 334 predicate places. [2024-06-27 18:31:05,672 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 529 transitions, 8227 flow [2024-06-27 18:31:05,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:05,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:05,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:05,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 18:31:05,672 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:05,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:05,673 INFO L85 PathProgramCache]: Analyzing trace with hash 630843654, now seen corresponding path program 22 times [2024-06-27 18:31:05,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:05,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069174347] [2024-06-27 18:31:05,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:05,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:06,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:06,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:06,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069174347] [2024-06-27 18:31:06,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069174347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:06,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:06,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:31:06,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867312986] [2024-06-27 18:31:06,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:06,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:31:06,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:06,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:31:06,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:31:06,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:31:06,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 529 transitions, 8227 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:06,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:06,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:31:06,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:07,885 INFO L124 PetriNetUnfolderBase]: 2604/5390 cut-off events. [2024-06-27 18:31:07,885 INFO L125 PetriNetUnfolderBase]: For 120610/120610 co-relation queries the response was YES. [2024-06-27 18:31:07,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32138 conditions, 5390 events. 2604/5390 cut-off events. For 120610/120610 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 43549 event pairs, 933 based on Foata normal form. 1/4990 useless extension candidates. Maximal degree in co-relation 31966. Up to 4328 conditions per place. [2024-06-27 18:31:07,953 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 490 selfloop transitions, 57 changer transitions 0/555 dead transitions. [2024-06-27 18:31:07,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 555 transitions, 9857 flow [2024-06-27 18:31:07,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:31:07,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:31:07,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-27 18:31:07,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42162162162162165 [2024-06-27 18:31:07,956 INFO L175 Difference]: Start difference. First operand has 375 places, 529 transitions, 8227 flow. Second operand 10 states and 156 transitions. [2024-06-27 18:31:07,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 555 transitions, 9857 flow [2024-06-27 18:31:08,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 555 transitions, 9638 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-27 18:31:08,626 INFO L231 Difference]: Finished difference. Result has 378 places, 535 transitions, 8308 flow [2024-06-27 18:31:08,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8020, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8308, PETRI_PLACES=378, PETRI_TRANSITIONS=535} [2024-06-27 18:31:08,627 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 337 predicate places. [2024-06-27 18:31:08,627 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 535 transitions, 8308 flow [2024-06-27 18:31:08,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:08,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:08,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:08,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 18:31:08,627 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:08,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:08,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1179207916, now seen corresponding path program 23 times [2024-06-27 18:31:08,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:08,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686166554] [2024-06-27 18:31:08,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:08,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:08,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:09,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:09,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:09,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686166554] [2024-06-27 18:31:09,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686166554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:09,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:09,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:31:09,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953449661] [2024-06-27 18:31:09,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:09,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:31:09,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:09,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:31:09,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:31:09,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:31:09,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 535 transitions, 8308 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:09,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:09,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:31:09,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:10,734 INFO L124 PetriNetUnfolderBase]: 2602/5387 cut-off events. [2024-06-27 18:31:10,735 INFO L125 PetriNetUnfolderBase]: For 118428/118428 co-relation queries the response was YES. [2024-06-27 18:31:10,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31967 conditions, 5387 events. 2602/5387 cut-off events. For 118428/118428 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 43477 event pairs, 930 based on Foata normal form. 1/4987 useless extension candidates. Maximal degree in co-relation 31794. Up to 4343 conditions per place. [2024-06-27 18:31:10,805 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 493 selfloop transitions, 53 changer transitions 0/554 dead transitions. [2024-06-27 18:31:10,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 554 transitions, 9597 flow [2024-06-27 18:31:10,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:31:10,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:31:10,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-27 18:31:10,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41621621621621624 [2024-06-27 18:31:10,806 INFO L175 Difference]: Start difference. First operand has 378 places, 535 transitions, 8308 flow. Second operand 10 states and 154 transitions. [2024-06-27 18:31:10,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 554 transitions, 9597 flow [2024-06-27 18:31:11,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 554 transitions, 9449 flow, removed 56 selfloop flow, removed 4 redundant places. [2024-06-27 18:31:11,558 INFO L231 Difference]: Finished difference. Result has 384 places, 535 transitions, 8272 flow [2024-06-27 18:31:11,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8160, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8272, PETRI_PLACES=384, PETRI_TRANSITIONS=535} [2024-06-27 18:31:11,559 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 343 predicate places. [2024-06-27 18:31:11,559 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 535 transitions, 8272 flow [2024-06-27 18:31:11,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:11,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:11,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:11,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 18:31:11,560 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:11,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:11,560 INFO L85 PathProgramCache]: Analyzing trace with hash 625336969, now seen corresponding path program 22 times [2024-06-27 18:31:11,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:11,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582608124] [2024-06-27 18:31:11,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:11,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:12,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:12,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:12,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582608124] [2024-06-27 18:31:12,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582608124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:12,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:12,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:31:12,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138893127] [2024-06-27 18:31:12,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:12,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:31:12,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:12,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:31:12,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:31:12,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:31:12,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 535 transitions, 8272 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:12,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:12,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:31:12,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:13,742 INFO L124 PetriNetUnfolderBase]: 2619/5426 cut-off events. [2024-06-27 18:31:13,742 INFO L125 PetriNetUnfolderBase]: For 123291/123291 co-relation queries the response was YES. [2024-06-27 18:31:13,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32180 conditions, 5426 events. 2619/5426 cut-off events. For 123291/123291 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 43925 event pairs, 942 based on Foata normal form. 2/5026 useless extension candidates. Maximal degree in co-relation 32005. Up to 4388 conditions per place. [2024-06-27 18:31:13,806 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 508 selfloop transitions, 40 changer transitions 0/556 dead transitions. [2024-06-27 18:31:13,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 556 transitions, 9548 flow [2024-06-27 18:31:13,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:31:13,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:31:13,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-27 18:31:13,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4135135135135135 [2024-06-27 18:31:13,807 INFO L175 Difference]: Start difference. First operand has 384 places, 535 transitions, 8272 flow. Second operand 10 states and 153 transitions. [2024-06-27 18:31:13,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 556 transitions, 9548 flow [2024-06-27 18:31:14,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 556 transitions, 9420 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 18:31:14,456 INFO L231 Difference]: Finished difference. Result has 385 places, 536 transitions, 8258 flow [2024-06-27 18:31:14,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8144, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8258, PETRI_PLACES=385, PETRI_TRANSITIONS=536} [2024-06-27 18:31:14,456 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 344 predicate places. [2024-06-27 18:31:14,457 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 536 transitions, 8258 flow [2024-06-27 18:31:14,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:14,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:14,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:14,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 18:31:14,457 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:14,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:14,457 INFO L85 PathProgramCache]: Analyzing trace with hash 625337124, now seen corresponding path program 24 times [2024-06-27 18:31:14,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:14,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573734084] [2024-06-27 18:31:14,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:14,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:14,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:15,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:15,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:15,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573734084] [2024-06-27 18:31:15,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573734084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:15,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:15,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:31:15,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726329574] [2024-06-27 18:31:15,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:15,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:31:15,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:15,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:31:15,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:31:15,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:31:15,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 536 transitions, 8258 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:15,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:15,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:31:15,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:16,826 INFO L124 PetriNetUnfolderBase]: 2647/5466 cut-off events. [2024-06-27 18:31:16,826 INFO L125 PetriNetUnfolderBase]: For 136007/136007 co-relation queries the response was YES. [2024-06-27 18:31:16,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32867 conditions, 5466 events. 2647/5466 cut-off events. For 136007/136007 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 44102 event pairs, 941 based on Foata normal form. 3/5060 useless extension candidates. Maximal degree in co-relation 32691. Up to 4143 conditions per place. [2024-06-27 18:31:16,882 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 468 selfloop transitions, 98 changer transitions 0/574 dead transitions. [2024-06-27 18:31:16,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 574 transitions, 10036 flow [2024-06-27 18:31:16,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:31:16,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:31:16,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 191 transitions. [2024-06-27 18:31:16,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43018018018018017 [2024-06-27 18:31:16,883 INFO L175 Difference]: Start difference. First operand has 385 places, 536 transitions, 8258 flow. Second operand 12 states and 191 transitions. [2024-06-27 18:31:16,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 574 transitions, 10036 flow [2024-06-27 18:31:17,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 574 transitions, 9924 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 18:31:17,560 INFO L231 Difference]: Finished difference. Result has 389 places, 541 transitions, 8537 flow [2024-06-27 18:31:17,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8146, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8537, PETRI_PLACES=389, PETRI_TRANSITIONS=541} [2024-06-27 18:31:17,561 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 348 predicate places. [2024-06-27 18:31:17,561 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 541 transitions, 8537 flow [2024-06-27 18:31:17,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:17,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:17,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:17,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 18:31:17,561 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:17,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:17,562 INFO L85 PathProgramCache]: Analyzing trace with hash 625333249, now seen corresponding path program 23 times [2024-06-27 18:31:17,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:17,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979397895] [2024-06-27 18:31:17,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:17,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:17,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:18,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:18,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:18,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979397895] [2024-06-27 18:31:18,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979397895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:18,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:18,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:31:18,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801766186] [2024-06-27 18:31:18,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:18,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:31:18,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:18,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:31:18,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:31:18,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:31:18,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 541 transitions, 8537 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:18,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:18,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:31:18,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:19,739 INFO L124 PetriNetUnfolderBase]: 2664/5505 cut-off events. [2024-06-27 18:31:19,739 INFO L125 PetriNetUnfolderBase]: For 135627/135627 co-relation queries the response was YES. [2024-06-27 18:31:19,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33257 conditions, 5505 events. 2664/5505 cut-off events. For 135627/135627 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 44566 event pairs, 945 based on Foata normal form. 2/5100 useless extension candidates. Maximal degree in co-relation 33080. Up to 4342 conditions per place. [2024-06-27 18:31:19,811 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 515 selfloop transitions, 44 changer transitions 0/567 dead transitions. [2024-06-27 18:31:19,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 567 transitions, 10023 flow [2024-06-27 18:31:19,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:31:19,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:31:19,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-27 18:31:19,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42702702702702705 [2024-06-27 18:31:19,813 INFO L175 Difference]: Start difference. First operand has 389 places, 541 transitions, 8537 flow. Second operand 10 states and 158 transitions. [2024-06-27 18:31:19,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 567 transitions, 10023 flow [2024-06-27 18:31:20,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 567 transitions, 9828 flow, removed 50 selfloop flow, removed 8 redundant places. [2024-06-27 18:31:20,591 INFO L231 Difference]: Finished difference. Result has 391 places, 542 transitions, 8464 flow [2024-06-27 18:31:20,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8342, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8464, PETRI_PLACES=391, PETRI_TRANSITIONS=542} [2024-06-27 18:31:20,592 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 350 predicate places. [2024-06-27 18:31:20,592 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 542 transitions, 8464 flow [2024-06-27 18:31:20,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:20,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:20,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:20,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 18:31:20,592 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:20,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:20,593 INFO L85 PathProgramCache]: Analyzing trace with hash 625481119, now seen corresponding path program 24 times [2024-06-27 18:31:20,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:20,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788938019] [2024-06-27 18:31:20,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:20,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:20,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:21,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:21,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:21,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788938019] [2024-06-27 18:31:21,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788938019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:21,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:21,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:31:21,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496149103] [2024-06-27 18:31:21,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:21,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:31:21,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:21,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:31:21,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:31:21,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:31:21,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 542 transitions, 8464 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:21,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:21,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:31:21,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:22,785 INFO L124 PetriNetUnfolderBase]: 2661/5502 cut-off events. [2024-06-27 18:31:22,785 INFO L125 PetriNetUnfolderBase]: For 127254/127254 co-relation queries the response was YES. [2024-06-27 18:31:22,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32826 conditions, 5502 events. 2661/5502 cut-off events. For 127254/127254 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 44516 event pairs, 954 based on Foata normal form. 2/5093 useless extension candidates. Maximal degree in co-relation 32647. Up to 4478 conditions per place. [2024-06-27 18:31:22,855 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 521 selfloop transitions, 33 changer transitions 0/562 dead transitions. [2024-06-27 18:31:22,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 562 transitions, 9727 flow [2024-06-27 18:31:22,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:31:22,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:31:22,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-06-27 18:31:22,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41081081081081083 [2024-06-27 18:31:22,856 INFO L175 Difference]: Start difference. First operand has 391 places, 542 transitions, 8464 flow. Second operand 10 states and 152 transitions. [2024-06-27 18:31:22,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 562 transitions, 9727 flow [2024-06-27 18:31:23,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 562 transitions, 9527 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-27 18:31:23,619 INFO L231 Difference]: Finished difference. Result has 393 places, 542 transitions, 8334 flow [2024-06-27 18:31:23,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8264, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8334, PETRI_PLACES=393, PETRI_TRANSITIONS=542} [2024-06-27 18:31:23,620 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 352 predicate places. [2024-06-27 18:31:23,620 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 542 transitions, 8334 flow [2024-06-27 18:31:23,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:23,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:23,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:23,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 18:31:23,620 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:23,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:23,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1971288099, now seen corresponding path program 1 times [2024-06-27 18:31:23,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:23,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650073459] [2024-06-27 18:31:23,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:23,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:23,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:24,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:24,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:24,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650073459] [2024-06-27 18:31:24,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650073459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:24,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:24,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:31:24,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740583608] [2024-06-27 18:31:24,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:24,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:31:24,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:24,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:31:24,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:31:24,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:31:24,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 542 transitions, 8334 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:24,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:24,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:31:24,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:25,726 INFO L124 PetriNetUnfolderBase]: 2707/5580 cut-off events. [2024-06-27 18:31:25,727 INFO L125 PetriNetUnfolderBase]: For 139143/139143 co-relation queries the response was YES. [2024-06-27 18:31:25,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32842 conditions, 5580 events. 2707/5580 cut-off events. For 139143/139143 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 44968 event pairs, 511 based on Foata normal form. 2/5191 useless extension candidates. Maximal degree in co-relation 32663. Up to 2241 conditions per place. [2024-06-27 18:31:25,798 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 486 selfloop transitions, 106 changer transitions 0/600 dead transitions. [2024-06-27 18:31:25,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 600 transitions, 10138 flow [2024-06-27 18:31:25,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:31:25,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:31:25,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 204 transitions. [2024-06-27 18:31:25,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:31:25,800 INFO L175 Difference]: Start difference. First operand has 393 places, 542 transitions, 8334 flow. Second operand 12 states and 204 transitions. [2024-06-27 18:31:25,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 600 transitions, 10138 flow [2024-06-27 18:31:26,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 600 transitions, 9874 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 18:31:26,660 INFO L231 Difference]: Finished difference. Result has 395 places, 546 transitions, 8469 flow [2024-06-27 18:31:26,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8079, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8469, PETRI_PLACES=395, PETRI_TRANSITIONS=546} [2024-06-27 18:31:26,660 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 354 predicate places. [2024-06-27 18:31:26,660 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 546 transitions, 8469 flow [2024-06-27 18:31:26,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:26,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:26,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:26,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 18:31:26,661 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:26,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:26,661 INFO L85 PathProgramCache]: Analyzing trace with hash -217357483, now seen corresponding path program 1 times [2024-06-27 18:31:26,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:26,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964782865] [2024-06-27 18:31:26,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:26,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:27,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:27,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:27,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964782865] [2024-06-27 18:31:27,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964782865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:27,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:27,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:31:27,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746802016] [2024-06-27 18:31:27,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:27,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:31:27,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:27,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:31:27,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:31:27,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:31:27,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 546 transitions, 8469 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:27,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:27,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:31:27,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:29,092 INFO L124 PetriNetUnfolderBase]: 2753/5670 cut-off events. [2024-06-27 18:31:29,092 INFO L125 PetriNetUnfolderBase]: For 155728/155728 co-relation queries the response was YES. [2024-06-27 18:31:29,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34052 conditions, 5670 events. 2753/5670 cut-off events. For 155728/155728 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 46044 event pairs, 796 based on Foata normal form. 2/5240 useless extension candidates. Maximal degree in co-relation 33872. Up to 4302 conditions per place. [2024-06-27 18:31:29,157 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 459 selfloop transitions, 126 changer transitions 0/593 dead transitions. [2024-06-27 18:31:29,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 593 transitions, 10395 flow [2024-06-27 18:31:29,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:31:29,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:31:29,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 210 transitions. [2024-06-27 18:31:29,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365904365904366 [2024-06-27 18:31:29,158 INFO L175 Difference]: Start difference. First operand has 395 places, 546 transitions, 8469 flow. Second operand 13 states and 210 transitions. [2024-06-27 18:31:29,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 593 transitions, 10395 flow [2024-06-27 18:31:29,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 593 transitions, 10189 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-27 18:31:29,960 INFO L231 Difference]: Finished difference. Result has 402 places, 557 transitions, 8891 flow [2024-06-27 18:31:29,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8279, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8891, PETRI_PLACES=402, PETRI_TRANSITIONS=557} [2024-06-27 18:31:29,960 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 361 predicate places. [2024-06-27 18:31:29,961 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 557 transitions, 8891 flow [2024-06-27 18:31:29,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:29,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:29,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:29,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 18:31:29,961 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:29,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:29,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1011811215, now seen corresponding path program 2 times [2024-06-27 18:31:29,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:29,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228815133] [2024-06-27 18:31:29,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:29,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:29,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:30,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:30,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:30,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228815133] [2024-06-27 18:31:30,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228815133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:30,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:30,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:31:30,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715572415] [2024-06-27 18:31:30,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:30,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:31:30,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:30,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:31:30,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:31:30,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:31:30,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 557 transitions, 8891 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:30,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:30,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:31:30,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:32,134 INFO L124 PetriNetUnfolderBase]: 2820/5738 cut-off events. [2024-06-27 18:31:32,134 INFO L125 PetriNetUnfolderBase]: For 165531/165531 co-relation queries the response was YES. [2024-06-27 18:31:32,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35036 conditions, 5738 events. 2820/5738 cut-off events. For 165531/165531 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 46277 event pairs, 730 based on Foata normal form. 2/5322 useless extension candidates. Maximal degree in co-relation 34853. Up to 3484 conditions per place. [2024-06-27 18:31:32,343 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 491 selfloop transitions, 117 changer transitions 0/616 dead transitions. [2024-06-27 18:31:32,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 616 transitions, 10681 flow [2024-06-27 18:31:32,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:31:32,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:31:32,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 217 transitions. [2024-06-27 18:31:32,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45114345114345117 [2024-06-27 18:31:32,344 INFO L175 Difference]: Start difference. First operand has 402 places, 557 transitions, 8891 flow. Second operand 13 states and 217 transitions. [2024-06-27 18:31:32,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 616 transitions, 10681 flow [2024-06-27 18:31:33,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 616 transitions, 10454 flow, removed 65 selfloop flow, removed 8 redundant places. [2024-06-27 18:31:33,221 INFO L231 Difference]: Finished difference. Result has 407 places, 562 transitions, 8990 flow [2024-06-27 18:31:33,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8664, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8990, PETRI_PLACES=407, PETRI_TRANSITIONS=562} [2024-06-27 18:31:33,221 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 366 predicate places. [2024-06-27 18:31:33,221 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 562 transitions, 8990 flow [2024-06-27 18:31:33,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:33,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:33,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:33,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 18:31:33,222 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:33,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:33,222 INFO L85 PathProgramCache]: Analyzing trace with hash 764150265, now seen corresponding path program 3 times [2024-06-27 18:31:33,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:33,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588103669] [2024-06-27 18:31:33,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:33,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:33,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:33,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:33,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588103669] [2024-06-27 18:31:33,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588103669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:33,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:33,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:31:33,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127140983] [2024-06-27 18:31:33,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:33,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:31:33,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:33,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:31:33,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:31:33,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:31:33,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 562 transitions, 8990 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:33,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:33,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:31:33,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:35,492 INFO L124 PetriNetUnfolderBase]: 2847/5877 cut-off events. [2024-06-27 18:31:35,492 INFO L125 PetriNetUnfolderBase]: For 167689/167689 co-relation queries the response was YES. [2024-06-27 18:31:35,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35577 conditions, 5877 events. 2847/5877 cut-off events. For 167689/167689 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 48188 event pairs, 880 based on Foata normal form. 2/5436 useless extension candidates. Maximal degree in co-relation 35392. Up to 4563 conditions per place. [2024-06-27 18:31:35,567 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 471 selfloop transitions, 118 changer transitions 0/597 dead transitions. [2024-06-27 18:31:35,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 597 transitions, 10442 flow [2024-06-27 18:31:35,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:31:35,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:31:35,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 204 transitions. [2024-06-27 18:31:35,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42411642411642414 [2024-06-27 18:31:35,568 INFO L175 Difference]: Start difference. First operand has 407 places, 562 transitions, 8990 flow. Second operand 13 states and 204 transitions. [2024-06-27 18:31:35,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 597 transitions, 10442 flow [2024-06-27 18:31:36,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 597 transitions, 10271 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-27 18:31:36,679 INFO L231 Difference]: Finished difference. Result has 411 places, 564 transitions, 9106 flow [2024-06-27 18:31:36,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8823, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9106, PETRI_PLACES=411, PETRI_TRANSITIONS=564} [2024-06-27 18:31:36,679 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 370 predicate places. [2024-06-27 18:31:36,680 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 564 transitions, 9106 flow [2024-06-27 18:31:36,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:36,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:36,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:36,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 18:31:36,680 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:36,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:36,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1795567695, now seen corresponding path program 4 times [2024-06-27 18:31:36,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:36,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319668007] [2024-06-27 18:31:36,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:36,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:37,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:37,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:37,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319668007] [2024-06-27 18:31:37,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319668007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:37,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:37,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:31:37,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145936994] [2024-06-27 18:31:37,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:37,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:31:37,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:37,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:31:37,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:31:37,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:31:37,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 564 transitions, 9106 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:37,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:37,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:31:37,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:38,920 INFO L124 PetriNetUnfolderBase]: 2874/5936 cut-off events. [2024-06-27 18:31:38,921 INFO L125 PetriNetUnfolderBase]: For 170524/170524 co-relation queries the response was YES. [2024-06-27 18:31:38,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36017 conditions, 5936 events. 2874/5936 cut-off events. For 170524/170524 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 48793 event pairs, 877 based on Foata normal form. 2/5499 useless extension candidates. Maximal degree in co-relation 35830. Up to 4357 conditions per place. [2024-06-27 18:31:39,002 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 475 selfloop transitions, 121 changer transitions 0/604 dead transitions. [2024-06-27 18:31:39,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 604 transitions, 10584 flow [2024-06-27 18:31:39,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:31:39,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:31:39,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 208 transitions. [2024-06-27 18:31:39,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 18:31:39,003 INFO L175 Difference]: Start difference. First operand has 411 places, 564 transitions, 9106 flow. Second operand 13 states and 208 transitions. [2024-06-27 18:31:39,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 604 transitions, 10584 flow [2024-06-27 18:31:40,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 604 transitions, 10360 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-27 18:31:40,135 INFO L231 Difference]: Finished difference. Result has 414 places, 566 transitions, 9178 flow [2024-06-27 18:31:40,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8882, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9178, PETRI_PLACES=414, PETRI_TRANSITIONS=566} [2024-06-27 18:31:40,135 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 373 predicate places. [2024-06-27 18:31:40,135 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 566 transitions, 9178 flow [2024-06-27 18:31:40,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:40,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:40,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:40,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 18:31:40,136 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:40,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:40,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1790926065, now seen corresponding path program 5 times [2024-06-27 18:31:40,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:40,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450632384] [2024-06-27 18:31:40,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:40,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:40,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:40,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:40,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:40,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450632384] [2024-06-27 18:31:40,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450632384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:40,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:40,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:31:40,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149873283] [2024-06-27 18:31:40,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:40,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:31:40,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:40,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:31:40,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:31:40,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:31:40,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 566 transitions, 9178 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:40,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:40,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:31:40,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:42,395 INFO L124 PetriNetUnfolderBase]: 2882/5943 cut-off events. [2024-06-27 18:31:42,396 INFO L125 PetriNetUnfolderBase]: For 166645/166645 co-relation queries the response was YES. [2024-06-27 18:31:42,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36068 conditions, 5943 events. 2882/5943 cut-off events. For 166645/166645 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 48845 event pairs, 837 based on Foata normal form. 2/5507 useless extension candidates. Maximal degree in co-relation 35880. Up to 4124 conditions per place. [2024-06-27 18:31:42,475 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 486 selfloop transitions, 115 changer transitions 0/609 dead transitions. [2024-06-27 18:31:42,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 609 transitions, 10663 flow [2024-06-27 18:31:42,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:31:42,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:31:42,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 212 transitions. [2024-06-27 18:31:42,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4407484407484408 [2024-06-27 18:31:42,476 INFO L175 Difference]: Start difference. First operand has 414 places, 566 transitions, 9178 flow. Second operand 13 states and 212 transitions. [2024-06-27 18:31:42,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 609 transitions, 10663 flow [2024-06-27 18:31:43,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 609 transitions, 10380 flow, removed 26 selfloop flow, removed 11 redundant places. [2024-06-27 18:31:43,610 INFO L231 Difference]: Finished difference. Result has 416 places, 567 transitions, 9163 flow [2024-06-27 18:31:43,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8911, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9163, PETRI_PLACES=416, PETRI_TRANSITIONS=567} [2024-06-27 18:31:43,610 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 375 predicate places. [2024-06-27 18:31:43,610 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 567 transitions, 9163 flow [2024-06-27 18:31:43,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:43,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:43,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:43,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 18:31:43,611 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:43,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:43,611 INFO L85 PathProgramCache]: Analyzing trace with hash -86956879, now seen corresponding path program 6 times [2024-06-27 18:31:43,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:43,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047118482] [2024-06-27 18:31:43,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:43,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:43,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:44,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:44,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:44,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047118482] [2024-06-27 18:31:44,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047118482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:44,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:44,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:44,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778359657] [2024-06-27 18:31:44,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:44,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:44,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:44,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:44,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:44,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:31:44,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 567 transitions, 9163 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:44,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:44,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:31:44,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:46,421 INFO L124 PetriNetUnfolderBase]: 3108/6398 cut-off events. [2024-06-27 18:31:46,422 INFO L125 PetriNetUnfolderBase]: For 230417/230417 co-relation queries the response was YES. [2024-06-27 18:31:46,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39459 conditions, 6398 events. 3108/6398 cut-off events. For 230417/230417 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 53352 event pairs, 924 based on Foata normal form. 2/5949 useless extension candidates. Maximal degree in co-relation 39270. Up to 3985 conditions per place. [2024-06-27 18:31:46,501 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 529 selfloop transitions, 97 changer transitions 0/634 dead transitions. [2024-06-27 18:31:46,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 634 transitions, 11115 flow [2024-06-27 18:31:46,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:31:46,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:31:46,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 224 transitions. [2024-06-27 18:31:46,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4656964656964657 [2024-06-27 18:31:46,502 INFO L175 Difference]: Start difference. First operand has 416 places, 567 transitions, 9163 flow. Second operand 13 states and 224 transitions. [2024-06-27 18:31:46,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 634 transitions, 11115 flow [2024-06-27 18:31:47,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 634 transitions, 10863 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-27 18:31:47,882 INFO L231 Difference]: Finished difference. Result has 419 places, 577 transitions, 9340 flow [2024-06-27 18:31:47,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8930, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9340, PETRI_PLACES=419, PETRI_TRANSITIONS=577} [2024-06-27 18:31:47,882 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 378 predicate places. [2024-06-27 18:31:47,882 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 577 transitions, 9340 flow [2024-06-27 18:31:47,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:47,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:47,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:47,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 18:31:47,883 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:47,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:47,883 INFO L85 PathProgramCache]: Analyzing trace with hash -28744459, now seen corresponding path program 7 times [2024-06-27 18:31:47,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:47,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499838492] [2024-06-27 18:31:47,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:47,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:47,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:48,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:48,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:48,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499838492] [2024-06-27 18:31:48,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499838492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:48,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:48,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:48,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145429129] [2024-06-27 18:31:48,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:48,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:48,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:48,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:48,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:48,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:31:48,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 577 transitions, 9340 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:48,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:48,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:31:48,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:50,840 INFO L124 PetriNetUnfolderBase]: 3130/6521 cut-off events. [2024-06-27 18:31:50,840 INFO L125 PetriNetUnfolderBase]: For 235705/235705 co-relation queries the response was YES. [2024-06-27 18:31:50,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39000 conditions, 6521 events. 3130/6521 cut-off events. For 235705/235705 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 54922 event pairs, 1067 based on Foata normal form. 14/6061 useless extension candidates. Maximal degree in co-relation 38809. Up to 4970 conditions per place. [2024-06-27 18:31:50,933 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 514 selfloop transitions, 101 changer transitions 0/623 dead transitions. [2024-06-27 18:31:50,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 623 transitions, 10932 flow [2024-06-27 18:31:50,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-27 18:31:50,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-27 18:31:50,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 231 transitions. [2024-06-27 18:31:50,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41621621621621624 [2024-06-27 18:31:50,934 INFO L175 Difference]: Start difference. First operand has 419 places, 577 transitions, 9340 flow. Second operand 15 states and 231 transitions. [2024-06-27 18:31:50,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 623 transitions, 10932 flow [2024-06-27 18:31:52,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 623 transitions, 10794 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 18:31:52,178 INFO L231 Difference]: Finished difference. Result has 425 places, 580 transitions, 9496 flow [2024-06-27 18:31:52,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9202, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=9496, PETRI_PLACES=425, PETRI_TRANSITIONS=580} [2024-06-27 18:31:52,178 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 384 predicate places. [2024-06-27 18:31:52,178 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 580 transitions, 9496 flow [2024-06-27 18:31:52,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:52,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:52,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:52,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 18:31:52,179 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:52,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:52,179 INFO L85 PathProgramCache]: Analyzing trace with hash -2041854707, now seen corresponding path program 2 times [2024-06-27 18:31:52,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:52,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303307089] [2024-06-27 18:31:52,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:52,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:52,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:53,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:53,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:53,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303307089] [2024-06-27 18:31:53,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303307089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:53,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:53,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:53,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860760309] [2024-06-27 18:31:53,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:53,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:53,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:53,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:53,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:53,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:31:53,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 580 transitions, 9496 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:53,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:53,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:31:53,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:55,248 INFO L124 PetriNetUnfolderBase]: 3160/6548 cut-off events. [2024-06-27 18:31:55,249 INFO L125 PetriNetUnfolderBase]: For 188174/188175 co-relation queries the response was YES. [2024-06-27 18:31:55,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39596 conditions, 6548 events. 3160/6548 cut-off events. For 188174/188175 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 55123 event pairs, 1077 based on Foata normal form. 3/6067 useless extension candidates. Maximal degree in co-relation 39403. Up to 5262 conditions per place. [2024-06-27 18:31:55,336 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 513 selfloop transitions, 99 changer transitions 0/620 dead transitions. [2024-06-27 18:31:55,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 620 transitions, 11118 flow [2024-06-27 18:31:55,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:31:55,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:31:55,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 201 transitions. [2024-06-27 18:31:55,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4178794178794179 [2024-06-27 18:31:55,337 INFO L175 Difference]: Start difference. First operand has 425 places, 580 transitions, 9496 flow. Second operand 13 states and 201 transitions. [2024-06-27 18:31:55,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 620 transitions, 11118 flow [2024-06-27 18:31:56,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 620 transitions, 10995 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-27 18:31:56,719 INFO L231 Difference]: Finished difference. Result has 431 places, 590 transitions, 9870 flow [2024-06-27 18:31:56,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9373, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9870, PETRI_PLACES=431, PETRI_TRANSITIONS=590} [2024-06-27 18:31:56,720 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 390 predicate places. [2024-06-27 18:31:56,720 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 590 transitions, 9870 flow [2024-06-27 18:31:56,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:56,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:56,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:31:56,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 18:31:56,720 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:56,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:56,721 INFO L85 PathProgramCache]: Analyzing trace with hash -28864429, now seen corresponding path program 8 times [2024-06-27 18:31:56,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:56,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095747350] [2024-06-27 18:31:56,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:56,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:56,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:57,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:57,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:57,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095747350] [2024-06-27 18:31:57,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095747350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:57,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:57,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:57,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726075029] [2024-06-27 18:31:57,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:57,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:57,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:57,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:57,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:57,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:31:57,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 590 transitions, 9870 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:57,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:57,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:31:57,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:59,765 INFO L124 PetriNetUnfolderBase]: 3198/6622 cut-off events. [2024-06-27 18:31:59,765 INFO L125 PetriNetUnfolderBase]: For 192969/192972 co-relation queries the response was YES. [2024-06-27 18:31:59,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40298 conditions, 6622 events. 3198/6622 cut-off events. For 192969/192972 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 55879 event pairs, 1012 based on Foata normal form. 5/6167 useless extension candidates. Maximal degree in co-relation 40102. Up to 4397 conditions per place. [2024-06-27 18:31:59,860 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 535 selfloop transitions, 99 changer transitions 0/642 dead transitions. [2024-06-27 18:31:59,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 642 transitions, 11685 flow [2024-06-27 18:31:59,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:31:59,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:31:59,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 218 transitions. [2024-06-27 18:31:59,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45322245322245325 [2024-06-27 18:31:59,862 INFO L175 Difference]: Start difference. First operand has 431 places, 590 transitions, 9870 flow. Second operand 13 states and 218 transitions. [2024-06-27 18:31:59,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 642 transitions, 11685 flow [2024-06-27 18:32:01,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 642 transitions, 11511 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-27 18:32:01,447 INFO L231 Difference]: Finished difference. Result has 437 places, 593 transitions, 9971 flow [2024-06-27 18:32:01,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9696, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9971, PETRI_PLACES=437, PETRI_TRANSITIONS=593} [2024-06-27 18:32:01,447 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 396 predicate places. [2024-06-27 18:32:01,447 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 593 transitions, 9971 flow [2024-06-27 18:32:01,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:01,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:01,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:32:01,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 18:32:01,448 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:32:01,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:01,448 INFO L85 PathProgramCache]: Analyzing trace with hash -28749109, now seen corresponding path program 9 times [2024-06-27 18:32:01,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:01,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190758163] [2024-06-27 18:32:01,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:01,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:01,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:02,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:32:02,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:02,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190758163] [2024-06-27 18:32:02,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190758163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:02,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:02,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:32:02,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422303073] [2024-06-27 18:32:02,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:02,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:32:02,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:02,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:32:02,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:32:02,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:32:02,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 593 transitions, 9971 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:02,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:02,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:32:02,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:04,561 INFO L124 PetriNetUnfolderBase]: 3195/6640 cut-off events. [2024-06-27 18:32:04,562 INFO L125 PetriNetUnfolderBase]: For 186080/186083 co-relation queries the response was YES. [2024-06-27 18:32:04,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40237 conditions, 6640 events. 3195/6640 cut-off events. For 186080/186083 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 56082 event pairs, 1055 based on Foata normal form. 5/6169 useless extension candidates. Maximal degree in co-relation 40040. Up to 4733 conditions per place. [2024-06-27 18:32:04,664 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 526 selfloop transitions, 105 changer transitions 0/639 dead transitions. [2024-06-27 18:32:04,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 639 transitions, 11527 flow [2024-06-27 18:32:04,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 18:32:04,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 18:32:04,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 224 transitions. [2024-06-27 18:32:04,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 18:32:04,665 INFO L175 Difference]: Start difference. First operand has 437 places, 593 transitions, 9971 flow. Second operand 14 states and 224 transitions. [2024-06-27 18:32:04,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 639 transitions, 11527 flow [2024-06-27 18:32:06,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 639 transitions, 11284 flow, removed 24 selfloop flow, removed 11 redundant places. [2024-06-27 18:32:06,180 INFO L231 Difference]: Finished difference. Result has 440 places, 593 transitions, 9956 flow [2024-06-27 18:32:06,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9728, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=9956, PETRI_PLACES=440, PETRI_TRANSITIONS=593} [2024-06-27 18:32:06,180 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 399 predicate places. [2024-06-27 18:32:06,180 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 593 transitions, 9956 flow [2024-06-27 18:32:06,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:06,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:06,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:32:06,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 18:32:06,181 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:32:06,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:06,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1961744109, now seen corresponding path program 1 times [2024-06-27 18:32:06,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:06,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156480603] [2024-06-27 18:32:06,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:06,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:06,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:07,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:32:07,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:07,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156480603] [2024-06-27 18:32:07,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156480603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:07,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:07,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:32:07,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330958756] [2024-06-27 18:32:07,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:07,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:32:07,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:07,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:32:07,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:32:07,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:32:07,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 593 transitions, 9956 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:07,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:07,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:32:07,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:09,098 INFO L124 PetriNetUnfolderBase]: 3224/6697 cut-off events. [2024-06-27 18:32:09,098 INFO L125 PetriNetUnfolderBase]: For 188312/188312 co-relation queries the response was YES. [2024-06-27 18:32:09,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40323 conditions, 6697 events. 3224/6697 cut-off events. For 188312/188312 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 56794 event pairs, 1150 based on Foata normal form. 2/6213 useless extension candidates. Maximal degree in co-relation 40125. Up to 5391 conditions per place. [2024-06-27 18:32:09,195 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 575 selfloop transitions, 63 changer transitions 0/646 dead transitions. [2024-06-27 18:32:09,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 646 transitions, 11726 flow [2024-06-27 18:32:09,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:32:09,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:32:09,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-27 18:32:09,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44226044226044225 [2024-06-27 18:32:09,196 INFO L175 Difference]: Start difference. First operand has 440 places, 593 transitions, 9956 flow. Second operand 11 states and 180 transitions. [2024-06-27 18:32:09,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 646 transitions, 11726 flow [2024-06-27 18:32:10,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 646 transitions, 11474 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-27 18:32:10,821 INFO L231 Difference]: Finished difference. Result has 440 places, 615 transitions, 10149 flow [2024-06-27 18:32:10,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9704, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10149, PETRI_PLACES=440, PETRI_TRANSITIONS=615} [2024-06-27 18:32:10,822 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 399 predicate places. [2024-06-27 18:32:10,822 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 615 transitions, 10149 flow [2024-06-27 18:32:10,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:10,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:10,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:32:10,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 18:32:10,823 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:32:10,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:10,823 INFO L85 PathProgramCache]: Analyzing trace with hash -2038685611, now seen corresponding path program 3 times [2024-06-27 18:32:10,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:10,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230840787] [2024-06-27 18:32:10,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:10,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:11,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:32:11,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:11,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230840787] [2024-06-27 18:32:11,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230840787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:11,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:11,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:32:11,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913589221] [2024-06-27 18:32:11,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:11,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:32:11,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:11,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:32:11,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:32:11,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:32:11,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 615 transitions, 10149 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:11,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:11,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:32:11,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:14,009 INFO L124 PetriNetUnfolderBase]: 3275/6795 cut-off events. [2024-06-27 18:32:14,009 INFO L125 PetriNetUnfolderBase]: For 194579/194582 co-relation queries the response was YES. [2024-06-27 18:32:14,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41174 conditions, 6795 events. 3275/6795 cut-off events. For 194579/194582 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 57703 event pairs, 1088 based on Foata normal form. 5/6310 useless extension candidates. Maximal degree in co-relation 40973. Up to 5022 conditions per place. [2024-06-27 18:32:14,107 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 477 selfloop transitions, 196 changer transitions 0/681 dead transitions. [2024-06-27 18:32:14,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 681 transitions, 12176 flow [2024-06-27 18:32:14,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:32:14,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:32:14,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 215 transitions. [2024-06-27 18:32:14,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446985446985447 [2024-06-27 18:32:14,108 INFO L175 Difference]: Start difference. First operand has 440 places, 615 transitions, 10149 flow. Second operand 13 states and 215 transitions. [2024-06-27 18:32:14,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 681 transitions, 12176 flow [2024-06-27 18:32:15,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 681 transitions, 11863 flow, removed 32 selfloop flow, removed 11 redundant places. [2024-06-27 18:32:15,688 INFO L231 Difference]: Finished difference. Result has 444 places, 641 transitions, 10668 flow [2024-06-27 18:32:15,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9836, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10668, PETRI_PLACES=444, PETRI_TRANSITIONS=641} [2024-06-27 18:32:15,688 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 403 predicate places. [2024-06-27 18:32:15,688 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 641 transitions, 10668 flow [2024-06-27 18:32:15,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:15,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:15,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:32:15,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 18:32:15,689 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:32:15,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:15,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1961497845, now seen corresponding path program 10 times [2024-06-27 18:32:15,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:15,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840186813] [2024-06-27 18:32:15,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:15,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:15,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:16,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:32:16,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:16,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840186813] [2024-06-27 18:32:16,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840186813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:16,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:16,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:32:16,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828635702] [2024-06-27 18:32:16,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:16,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:32:16,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:16,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:32:16,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:32:16,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:32:16,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 641 transitions, 10668 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:16,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:16,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:32:16,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:18,949 INFO L124 PetriNetUnfolderBase]: 3380/7059 cut-off events. [2024-06-27 18:32:18,949 INFO L125 PetriNetUnfolderBase]: For 261250/261253 co-relation queries the response was YES. [2024-06-27 18:32:19,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42863 conditions, 7059 events. 3380/7059 cut-off events. For 261250/261253 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 60451 event pairs, 1158 based on Foata normal form. 17/6572 useless extension candidates. Maximal degree in co-relation 42662. Up to 5208 conditions per place. [2024-06-27 18:32:19,056 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 526 selfloop transitions, 156 changer transitions 0/690 dead transitions. [2024-06-27 18:32:19,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 690 transitions, 12488 flow [2024-06-27 18:32:19,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:32:19,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:32:19,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 206 transitions. [2024-06-27 18:32:19,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46396396396396394 [2024-06-27 18:32:19,057 INFO L175 Difference]: Start difference. First operand has 444 places, 641 transitions, 10668 flow. Second operand 12 states and 206 transitions. [2024-06-27 18:32:19,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 690 transitions, 12488 flow [2024-06-27 18:32:20,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 690 transitions, 12114 flow, removed 68 selfloop flow, removed 8 redundant places. [2024-06-27 18:32:20,674 INFO L231 Difference]: Finished difference. Result has 448 places, 642 transitions, 10682 flow [2024-06-27 18:32:20,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10326, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10682, PETRI_PLACES=448, PETRI_TRANSITIONS=642} [2024-06-27 18:32:20,675 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 407 predicate places. [2024-06-27 18:32:20,675 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 642 transitions, 10682 flow [2024-06-27 18:32:20,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:20,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:20,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:32:20,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 18:32:20,675 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:32:20,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:20,676 INFO L85 PathProgramCache]: Analyzing trace with hash -2044941721, now seen corresponding path program 4 times [2024-06-27 18:32:20,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:20,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985066133] [2024-06-27 18:32:20,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:20,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:21,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:32:21,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:21,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985066133] [2024-06-27 18:32:21,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985066133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:21,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:21,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:32:21,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471707415] [2024-06-27 18:32:21,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:21,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:32:21,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:21,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:32:21,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:32:21,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:32:21,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 642 transitions, 10682 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:21,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:21,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:32:21,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:23,968 INFO L124 PetriNetUnfolderBase]: 3393/7062 cut-off events. [2024-06-27 18:32:23,968 INFO L125 PetriNetUnfolderBase]: For 203299/203302 co-relation queries the response was YES. [2024-06-27 18:32:24,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42450 conditions, 7062 events. 3393/7062 cut-off events. For 203299/203302 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 60408 event pairs, 1137 based on Foata normal form. 5/6561 useless extension candidates. Maximal degree in co-relation 42248. Up to 5250 conditions per place. [2024-06-27 18:32:24,070 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 486 selfloop transitions, 191 changer transitions 0/685 dead transitions. [2024-06-27 18:32:24,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 685 transitions, 12446 flow [2024-06-27 18:32:24,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:32:24,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:32:24,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 216 transitions. [2024-06-27 18:32:24,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4490644490644491 [2024-06-27 18:32:24,071 INFO L175 Difference]: Start difference. First operand has 448 places, 642 transitions, 10682 flow. Second operand 13 states and 216 transitions. [2024-06-27 18:32:24,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 685 transitions, 12446 flow [2024-06-27 18:32:25,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 685 transitions, 12114 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-27 18:32:25,740 INFO L231 Difference]: Finished difference. Result has 453 places, 646 transitions, 10866 flow [2024-06-27 18:32:25,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10350, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=642, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10866, PETRI_PLACES=453, PETRI_TRANSITIONS=646} [2024-06-27 18:32:25,740 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 412 predicate places. [2024-06-27 18:32:25,740 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 646 transitions, 10866 flow [2024-06-27 18:32:25,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:25,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:25,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:32:25,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 18:32:25,741 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:32:25,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:25,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1955068755, now seen corresponding path program 11 times [2024-06-27 18:32:25,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:25,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533581931] [2024-06-27 18:32:25,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:25,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:26,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:32:26,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:26,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533581931] [2024-06-27 18:32:26,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533581931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:26,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:26,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:32:26,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116982216] [2024-06-27 18:32:26,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:26,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:32:26,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:26,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:32:26,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:32:26,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:32:26,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 646 transitions, 10866 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:26,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:26,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:32:26,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:29,273 INFO L124 PetriNetUnfolderBase]: 3498/7324 cut-off events. [2024-06-27 18:32:29,273 INFO L125 PetriNetUnfolderBase]: For 269829/269832 co-relation queries the response was YES. [2024-06-27 18:32:29,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43686 conditions, 7324 events. 3498/7324 cut-off events. For 269829/269832 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 63133 event pairs, 1219 based on Foata normal form. 17/6822 useless extension candidates. Maximal degree in co-relation 43481. Up to 5402 conditions per place. [2024-06-27 18:32:29,366 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 531 selfloop transitions, 159 changer transitions 0/698 dead transitions. [2024-06-27 18:32:29,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 698 transitions, 12686 flow [2024-06-27 18:32:29,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:32:29,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:32:29,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 225 transitions. [2024-06-27 18:32:29,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4677754677754678 [2024-06-27 18:32:29,367 INFO L175 Difference]: Start difference. First operand has 453 places, 646 transitions, 10866 flow. Second operand 13 states and 225 transitions. [2024-06-27 18:32:29,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 698 transitions, 12686 flow [2024-06-27 18:32:30,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 698 transitions, 12239 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-27 18:32:30,955 INFO L231 Difference]: Finished difference. Result has 457 places, 647 transitions, 10783 flow [2024-06-27 18:32:30,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10419, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10783, PETRI_PLACES=457, PETRI_TRANSITIONS=647} [2024-06-27 18:32:30,955 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 416 predicate places. [2024-06-27 18:32:30,956 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 647 transitions, 10783 flow [2024-06-27 18:32:30,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:30,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:30,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:32:30,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 18:32:30,956 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:32:30,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:30,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1955068941, now seen corresponding path program 5 times [2024-06-27 18:32:30,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:30,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808438074] [2024-06-27 18:32:30,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:30,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:30,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:31,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:32:31,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:31,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808438074] [2024-06-27 18:32:31,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808438074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:31,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:31,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:32:31,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546964714] [2024-06-27 18:32:31,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:31,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:32:31,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:31,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:32:31,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:32:31,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:32:31,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 647 transitions, 10783 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:31,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:31,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:32:31,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:34,078 INFO L124 PetriNetUnfolderBase]: 3517/7342 cut-off events. [2024-06-27 18:32:34,078 INFO L125 PetriNetUnfolderBase]: For 210645/210648 co-relation queries the response was YES. [2024-06-27 18:32:34,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43756 conditions, 7342 events. 3517/7342 cut-off events. For 210645/210648 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 63299 event pairs, 1159 based on Foata normal form. 5/6826 useless extension candidates. Maximal degree in co-relation 43550. Up to 5388 conditions per place. [2024-06-27 18:32:34,181 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 476 selfloop transitions, 207 changer transitions 0/691 dead transitions. [2024-06-27 18:32:34,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 691 transitions, 12561 flow [2024-06-27 18:32:34,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:32:34,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:32:34,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 205 transitions. [2024-06-27 18:32:34,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4617117117117117 [2024-06-27 18:32:34,182 INFO L175 Difference]: Start difference. First operand has 457 places, 647 transitions, 10783 flow. Second operand 12 states and 205 transitions. [2024-06-27 18:32:34,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 691 transitions, 12561 flow [2024-06-27 18:32:35,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 691 transitions, 12221 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-06-27 18:32:35,784 INFO L231 Difference]: Finished difference. Result has 459 places, 653 transitions, 11063 flow [2024-06-27 18:32:35,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10443, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11063, PETRI_PLACES=459, PETRI_TRANSITIONS=653} [2024-06-27 18:32:35,785 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 418 predicate places. [2024-06-27 18:32:35,785 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 653 transitions, 11063 flow [2024-06-27 18:32:35,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:35,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:35,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:32:35,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 18:32:35,786 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:32:35,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:35,786 INFO L85 PathProgramCache]: Analyzing trace with hash -224280109, now seen corresponding path program 12 times [2024-06-27 18:32:35,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:35,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889483349] [2024-06-27 18:32:35,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:35,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:35,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:36,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:32:36,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:36,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889483349] [2024-06-27 18:32:36,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889483349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:36,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:36,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:32:36,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252288263] [2024-06-27 18:32:36,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:36,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:32:36,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:36,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:32:36,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:32:36,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:32:36,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 653 transitions, 11063 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:36,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:36,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:32:36,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:39,251 INFO L124 PetriNetUnfolderBase]: 3658/7671 cut-off events. [2024-06-27 18:32:39,251 INFO L125 PetriNetUnfolderBase]: For 296062/296065 co-relation queries the response was YES. [2024-06-27 18:32:39,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47435 conditions, 7671 events. 3658/7671 cut-off events. For 296062/296065 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 66798 event pairs, 1294 based on Foata normal form. 5/7142 useless extension candidates. Maximal degree in co-relation 47227. Up to 5639 conditions per place. [2024-06-27 18:32:39,359 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 547 selfloop transitions, 152 changer transitions 0/707 dead transitions. [2024-06-27 18:32:39,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 707 transitions, 13143 flow [2024-06-27 18:32:39,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:32:39,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:32:39,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 217 transitions. [2024-06-27 18:32:39,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48873873873873874 [2024-06-27 18:32:39,360 INFO L175 Difference]: Start difference. First operand has 459 places, 653 transitions, 11063 flow. Second operand 12 states and 217 transitions. [2024-06-27 18:32:39,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 707 transitions, 13143 flow [2024-06-27 18:32:41,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 707 transitions, 12792 flow, removed 43 selfloop flow, removed 9 redundant places. [2024-06-27 18:32:41,502 INFO L231 Difference]: Finished difference. Result has 462 places, 655 transitions, 11098 flow [2024-06-27 18:32:41,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10712, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=653, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11098, PETRI_PLACES=462, PETRI_TRANSITIONS=655} [2024-06-27 18:32:41,502 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 421 predicate places. [2024-06-27 18:32:41,502 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 655 transitions, 11098 flow [2024-06-27 18:32:41,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:41,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:41,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:32:41,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 18:32:41,503 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:32:41,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:41,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1955064105, now seen corresponding path program 13 times [2024-06-27 18:32:41,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:41,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810110713] [2024-06-27 18:32:41,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:41,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:41,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:42,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:32:42,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:42,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810110713] [2024-06-27 18:32:42,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810110713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:42,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:42,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:32:42,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747221658] [2024-06-27 18:32:42,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:42,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:32:42,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:42,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:32:42,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:32:42,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:32:42,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 655 transitions, 11098 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:42,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:42,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:32:42,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:45,062 INFO L124 PetriNetUnfolderBase]: 3675/7725 cut-off events. [2024-06-27 18:32:45,062 INFO L125 PetriNetUnfolderBase]: For 301671/301674 co-relation queries the response was YES. [2024-06-27 18:32:45,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47475 conditions, 7725 events. 3675/7725 cut-off events. For 301671/301674 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 67255 event pairs, 1291 based on Foata normal form. 5/7193 useless extension candidates. Maximal degree in co-relation 47267. Up to 5464 conditions per place. [2024-06-27 18:32:45,213 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 539 selfloop transitions, 160 changer transitions 0/707 dead transitions. [2024-06-27 18:32:45,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 707 transitions, 12946 flow [2024-06-27 18:32:45,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:32:45,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:32:45,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 212 transitions. [2024-06-27 18:32:45,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-27 18:32:45,214 INFO L175 Difference]: Start difference. First operand has 462 places, 655 transitions, 11098 flow. Second operand 12 states and 212 transitions. [2024-06-27 18:32:45,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 707 transitions, 12946 flow [2024-06-27 18:32:47,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 707 transitions, 12739 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-27 18:32:47,565 INFO L231 Difference]: Finished difference. Result has 467 places, 656 transitions, 11257 flow [2024-06-27 18:32:47,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10891, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11257, PETRI_PLACES=467, PETRI_TRANSITIONS=656} [2024-06-27 18:32:47,566 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 426 predicate places. [2024-06-27 18:32:47,566 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 656 transitions, 11257 flow [2024-06-27 18:32:47,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:47,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:47,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:32:47,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 18:32:47,566 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:32:47,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:47,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1789008141, now seen corresponding path program 6 times [2024-06-27 18:32:47,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:47,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677451059] [2024-06-27 18:32:47,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:47,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:47,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:48,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:32:48,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:48,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677451059] [2024-06-27 18:32:48,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677451059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:48,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:48,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:32:48,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707222962] [2024-06-27 18:32:48,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:48,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:32:48,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:48,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:32:48,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:32:48,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:32:48,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 656 transitions, 11257 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:48,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:48,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:32:48,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:51,376 INFO L124 PetriNetUnfolderBase]: 3688/7720 cut-off events. [2024-06-27 18:32:51,376 INFO L125 PetriNetUnfolderBase]: For 307418/307421 co-relation queries the response was YES. [2024-06-27 18:32:51,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47992 conditions, 7720 events. 3688/7720 cut-off events. For 307418/307421 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 67360 event pairs, 1300 based on Foata normal form. 5/7184 useless extension candidates. Maximal degree in co-relation 47782. Up to 5799 conditions per place. [2024-06-27 18:32:51,505 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 500 selfloop transitions, 188 changer transitions 0/696 dead transitions. [2024-06-27 18:32:51,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 696 transitions, 13027 flow [2024-06-27 18:32:51,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:32:51,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:32:51,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 217 transitions. [2024-06-27 18:32:51,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45114345114345117 [2024-06-27 18:32:51,506 INFO L175 Difference]: Start difference. First operand has 467 places, 656 transitions, 11257 flow. Second operand 13 states and 217 transitions. [2024-06-27 18:32:51,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 696 transitions, 13027 flow [2024-06-27 18:32:53,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 696 transitions, 12677 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-27 18:32:53,879 INFO L231 Difference]: Finished difference. Result has 471 places, 659 transitions, 11402 flow [2024-06-27 18:32:53,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10907, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=11402, PETRI_PLACES=471, PETRI_TRANSITIONS=659} [2024-06-27 18:32:53,880 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 430 predicate places. [2024-06-27 18:32:53,880 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 659 transitions, 11402 flow [2024-06-27 18:32:53,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:53,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:53,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:32:53,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 18:32:53,880 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:32:53,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:53,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1788835161, now seen corresponding path program 7 times [2024-06-27 18:32:53,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:53,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690727350] [2024-06-27 18:32:53,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:53,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:53,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:54,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:32:54,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:54,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690727350] [2024-06-27 18:32:54,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690727350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:54,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:54,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:32:54,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624745186] [2024-06-27 18:32:54,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:54,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:32:54,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:54,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:32:54,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:32:54,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:32:54,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 659 transitions, 11402 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:54,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:54,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:32:54,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:57,343 INFO L124 PetriNetUnfolderBase]: 3701/7740 cut-off events. [2024-06-27 18:32:57,343 INFO L125 PetriNetUnfolderBase]: For 311963/311966 co-relation queries the response was YES. [2024-06-27 18:32:57,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48290 conditions, 7740 events. 3701/7740 cut-off events. For 311963/311966 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 67482 event pairs, 1241 based on Foata normal form. 5/7201 useless extension candidates. Maximal degree in co-relation 48078. Up to 5758 conditions per place. [2024-06-27 18:32:57,472 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 491 selfloop transitions, 199 changer transitions 0/698 dead transitions. [2024-06-27 18:32:57,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 698 transitions, 13155 flow [2024-06-27 18:32:57,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:32:57,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:32:57,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 209 transitions. [2024-06-27 18:32:57,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47072072072072074 [2024-06-27 18:32:57,473 INFO L175 Difference]: Start difference. First operand has 471 places, 659 transitions, 11402 flow. Second operand 12 states and 209 transitions. [2024-06-27 18:32:57,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 698 transitions, 13155 flow [2024-06-27 18:32:59,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 698 transitions, 12700 flow, removed 42 selfloop flow, removed 10 redundant places. [2024-06-27 18:32:59,766 INFO L231 Difference]: Finished difference. Result has 473 places, 661 transitions, 11452 flow [2024-06-27 18:32:59,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10947, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11452, PETRI_PLACES=473, PETRI_TRANSITIONS=661} [2024-06-27 18:32:59,766 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 432 predicate places. [2024-06-27 18:32:59,766 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 661 transitions, 11452 flow [2024-06-27 18:32:59,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:59,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:59,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:32:59,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 18:32:59,767 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:32:59,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:59,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1789007955, now seen corresponding path program 14 times [2024-06-27 18:32:59,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:59,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174748089] [2024-06-27 18:32:59,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:59,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:59,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:00,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:33:00,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:00,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174748089] [2024-06-27 18:33:00,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174748089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:00,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:00,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:33:00,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647827021] [2024-06-27 18:33:00,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:00,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:33:00,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:00,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:33:00,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:33:00,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:33:00,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 661 transitions, 11452 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:00,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:00,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:33:00,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:03,358 INFO L124 PetriNetUnfolderBase]: 3702/7768 cut-off events. [2024-06-27 18:33:03,358 INFO L125 PetriNetUnfolderBase]: For 315864/315867 co-relation queries the response was YES. [2024-06-27 18:33:03,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47054 conditions, 7768 events. 3702/7768 cut-off events. For 315864/315867 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 67794 event pairs, 1313 based on Foata normal form. 17/7237 useless extension candidates. Maximal degree in co-relation 46841. Up to 5808 conditions per place. [2024-06-27 18:33:03,475 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 552 selfloop transitions, 148 changer transitions 0/708 dead transitions. [2024-06-27 18:33:03,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 708 transitions, 13253 flow [2024-06-27 18:33:03,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:33:03,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:33:03,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 210 transitions. [2024-06-27 18:33:03,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 18:33:03,476 INFO L175 Difference]: Start difference. First operand has 473 places, 661 transitions, 11452 flow. Second operand 12 states and 210 transitions. [2024-06-27 18:33:03,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 708 transitions, 13253 flow [2024-06-27 18:33:05,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 708 transitions, 12781 flow, removed 45 selfloop flow, removed 8 redundant places. [2024-06-27 18:33:05,502 INFO L231 Difference]: Finished difference. Result has 477 places, 662 transitions, 11315 flow [2024-06-27 18:33:05,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10980, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11315, PETRI_PLACES=477, PETRI_TRANSITIONS=662} [2024-06-27 18:33:05,502 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 436 predicate places. [2024-06-27 18:33:05,503 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 662 transitions, 11315 flow [2024-06-27 18:33:05,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:05,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:05,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:05,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 18:33:05,503 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:33:05,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:05,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1784361675, now seen corresponding path program 15 times [2024-06-27 18:33:05,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:05,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367775380] [2024-06-27 18:33:05,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:05,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:06,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:33:06,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:06,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367775380] [2024-06-27 18:33:06,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367775380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:06,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:06,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:33:06,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017906761] [2024-06-27 18:33:06,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:06,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:33:06,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:06,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:33:06,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:33:06,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:33:06,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 662 transitions, 11315 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:06,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:06,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:33:06,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:08,903 INFO L124 PetriNetUnfolderBase]: 3739/7846 cut-off events. [2024-06-27 18:33:08,904 INFO L125 PetriNetUnfolderBase]: For 263534/263537 co-relation queries the response was YES. [2024-06-27 18:33:08,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47659 conditions, 7846 events. 3739/7846 cut-off events. For 263534/263537 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 68604 event pairs, 1293 based on Foata normal form. 5/7302 useless extension candidates. Maximal degree in co-relation 47445. Up to 5646 conditions per place. [2024-06-27 18:33:09,024 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 538 selfloop transitions, 172 changer transitions 0/718 dead transitions. [2024-06-27 18:33:09,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 718 transitions, 13448 flow [2024-06-27 18:33:09,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:33:09,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:33:09,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 234 transitions. [2024-06-27 18:33:09,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 18:33:09,026 INFO L175 Difference]: Start difference. First operand has 477 places, 662 transitions, 11315 flow. Second operand 13 states and 234 transitions. [2024-06-27 18:33:09,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 718 transitions, 13448 flow [2024-06-27 18:33:11,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 718 transitions, 13137 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-27 18:33:11,183 INFO L231 Difference]: Finished difference. Result has 480 places, 664 transitions, 11440 flow [2024-06-27 18:33:11,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11004, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=662, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=11440, PETRI_PLACES=480, PETRI_TRANSITIONS=664} [2024-06-27 18:33:11,184 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 439 predicate places. [2024-06-27 18:33:11,184 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 664 transitions, 11440 flow [2024-06-27 18:33:11,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:11,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:11,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:11,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 18:33:11,185 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:33:11,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:11,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1784366325, now seen corresponding path program 16 times [2024-06-27 18:33:11,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:11,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179935157] [2024-06-27 18:33:11,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:11,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:11,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:12,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:33:12,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:12,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179935157] [2024-06-27 18:33:12,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179935157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:12,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:12,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:33:12,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540199356] [2024-06-27 18:33:12,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:12,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:33:12,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:12,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:33:12,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:33:12,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:33:12,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 664 transitions, 11440 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:12,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:12,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:33:12,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:14,966 INFO L124 PetriNetUnfolderBase]: 3733/7840 cut-off events. [2024-06-27 18:33:14,966 INFO L125 PetriNetUnfolderBase]: For 254880/254883 co-relation queries the response was YES. [2024-06-27 18:33:15,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47247 conditions, 7840 events. 3733/7840 cut-off events. For 254880/254883 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 68537 event pairs, 1314 based on Foata normal form. 7/7296 useless extension candidates. Maximal degree in co-relation 47032. Up to 5746 conditions per place. [2024-06-27 18:33:15,092 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 536 selfloop transitions, 171 changer transitions 0/715 dead transitions. [2024-06-27 18:33:15,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 715 transitions, 13271 flow [2024-06-27 18:33:15,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 18:33:15,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 18:33:15,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 240 transitions. [2024-06-27 18:33:15,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46332046332046334 [2024-06-27 18:33:15,093 INFO L175 Difference]: Start difference. First operand has 480 places, 664 transitions, 11440 flow. Second operand 14 states and 240 transitions. [2024-06-27 18:33:15,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 715 transitions, 13271 flow [2024-06-27 18:33:17,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 715 transitions, 12980 flow, removed 44 selfloop flow, removed 10 redundant places. [2024-06-27 18:33:17,025 INFO L231 Difference]: Finished difference. Result has 484 places, 664 transitions, 11502 flow [2024-06-27 18:33:17,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11149, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=11502, PETRI_PLACES=484, PETRI_TRANSITIONS=664} [2024-06-27 18:33:17,025 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 443 predicate places. [2024-06-27 18:33:17,025 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 664 transitions, 11502 flow [2024-06-27 18:33:17,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:17,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:17,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:17,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 18:33:17,026 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:33:17,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:17,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1784246355, now seen corresponding path program 17 times [2024-06-27 18:33:17,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:17,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039348883] [2024-06-27 18:33:17,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:17,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:17,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:17,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:33:17,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:17,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039348883] [2024-06-27 18:33:17,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039348883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:17,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:17,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:33:17,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390509347] [2024-06-27 18:33:17,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:17,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:33:17,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:17,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:33:17,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:33:17,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:33:17,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 664 transitions, 11502 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:17,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:17,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:33:17,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:20,456 INFO L124 PetriNetUnfolderBase]: 3750/7856 cut-off events. [2024-06-27 18:33:20,456 INFO L125 PetriNetUnfolderBase]: For 238808/238811 co-relation queries the response was YES. [2024-06-27 18:33:20,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47431 conditions, 7856 events. 3750/7856 cut-off events. For 238808/238811 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 68716 event pairs, 1277 based on Foata normal form. 5/7323 useless extension candidates. Maximal degree in co-relation 47215. Up to 5112 conditions per place. [2024-06-27 18:33:20,587 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 536 selfloop transitions, 174 changer transitions 0/718 dead transitions. [2024-06-27 18:33:20,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 718 transitions, 13361 flow [2024-06-27 18:33:20,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:33:20,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:33:20,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 218 transitions. [2024-06-27 18:33:20,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49099099099099097 [2024-06-27 18:33:20,588 INFO L175 Difference]: Start difference. First operand has 484 places, 664 transitions, 11502 flow. Second operand 12 states and 218 transitions. [2024-06-27 18:33:20,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 718 transitions, 13361 flow [2024-06-27 18:33:22,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 718 transitions, 13019 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-27 18:33:22,741 INFO L231 Difference]: Finished difference. Result has 484 places, 665 transitions, 11556 flow [2024-06-27 18:33:22,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11160, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11556, PETRI_PLACES=484, PETRI_TRANSITIONS=665} [2024-06-27 18:33:22,741 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 443 predicate places. [2024-06-27 18:33:22,741 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 665 transitions, 11556 flow [2024-06-27 18:33:22,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:22,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:22,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:22,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 18:33:22,742 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:33:22,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:22,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1784366511, now seen corresponding path program 8 times [2024-06-27 18:33:22,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:22,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078620830] [2024-06-27 18:33:22,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:22,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:23,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:33:23,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:23,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078620830] [2024-06-27 18:33:23,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078620830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:23,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:23,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:33:23,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354828021] [2024-06-27 18:33:23,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:23,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:33:23,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:23,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:33:23,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:33:23,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:33:23,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 665 transitions, 11556 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:23,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:23,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:33:23,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:26,459 INFO L124 PetriNetUnfolderBase]: 3763/7882 cut-off events. [2024-06-27 18:33:26,459 INFO L125 PetriNetUnfolderBase]: For 243796/243799 co-relation queries the response was YES. [2024-06-27 18:33:26,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47929 conditions, 7882 events. 3763/7882 cut-off events. For 243796/243799 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 69056 event pairs, 1295 based on Foata normal form. 5/7329 useless extension candidates. Maximal degree in co-relation 47712. Up to 5801 conditions per place. [2024-06-27 18:33:26,588 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 485 selfloop transitions, 216 changer transitions 0/709 dead transitions. [2024-06-27 18:33:26,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 709 transitions, 13395 flow [2024-06-27 18:33:26,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-27 18:33:26,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-27 18:33:26,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 247 transitions. [2024-06-27 18:33:26,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44504504504504505 [2024-06-27 18:33:26,589 INFO L175 Difference]: Start difference. First operand has 484 places, 665 transitions, 11556 flow. Second operand 15 states and 247 transitions. [2024-06-27 18:33:26,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 709 transitions, 13395 flow [2024-06-27 18:33:28,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 709 transitions, 13015 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-27 18:33:28,702 INFO L231 Difference]: Finished difference. Result has 489 places, 667 transitions, 11725 flow [2024-06-27 18:33:28,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11176, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=665, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=11725, PETRI_PLACES=489, PETRI_TRANSITIONS=667} [2024-06-27 18:33:28,702 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 448 predicate places. [2024-06-27 18:33:28,702 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 667 transitions, 11725 flow [2024-06-27 18:33:28,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:28,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:28,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:28,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 18:33:28,703 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:33:28,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:28,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1595791799, now seen corresponding path program 18 times [2024-06-27 18:33:28,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:28,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541157982] [2024-06-27 18:33:28,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:28,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:29,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:33:29,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:29,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541157982] [2024-06-27 18:33:29,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541157982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:29,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:29,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:33:29,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175086281] [2024-06-27 18:33:29,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:29,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:33:29,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:29,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:33:29,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:33:29,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:33:29,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 667 transitions, 11725 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:29,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:29,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:33:29,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:32,506 INFO L124 PetriNetUnfolderBase]: 3790/7868 cut-off events. [2024-06-27 18:33:32,506 INFO L125 PetriNetUnfolderBase]: For 244657/244660 co-relation queries the response was YES. [2024-06-27 18:33:32,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48147 conditions, 7868 events. 3790/7868 cut-off events. For 244657/244660 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 67791 event pairs, 994 based on Foata normal form. 5/7369 useless extension candidates. Maximal degree in co-relation 47929. Up to 3840 conditions per place. [2024-06-27 18:33:32,614 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 540 selfloop transitions, 167 changer transitions 0/715 dead transitions. [2024-06-27 18:33:32,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 715 transitions, 13707 flow [2024-06-27 18:33:32,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:33:32,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:33:32,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 201 transitions. [2024-06-27 18:33:32,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527027027027027 [2024-06-27 18:33:32,615 INFO L175 Difference]: Start difference. First operand has 489 places, 667 transitions, 11725 flow. Second operand 12 states and 201 transitions. [2024-06-27 18:33:32,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 715 transitions, 13707 flow [2024-06-27 18:33:34,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 715 transitions, 13180 flow, removed 49 selfloop flow, removed 14 redundant places. [2024-06-27 18:33:34,593 INFO L231 Difference]: Finished difference. Result has 487 places, 669 transitions, 11599 flow [2024-06-27 18:33:34,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11202, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11599, PETRI_PLACES=487, PETRI_TRANSITIONS=669} [2024-06-27 18:33:34,594 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 446 predicate places. [2024-06-27 18:33:34,594 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 669 transitions, 11599 flow [2024-06-27 18:33:34,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:34,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:34,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:34,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 18:33:34,595 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:33:34,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:34,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1653884249, now seen corresponding path program 19 times [2024-06-27 18:33:34,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:34,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252827307] [2024-06-27 18:33:34,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:34,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:34,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:35,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:33:35,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:35,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252827307] [2024-06-27 18:33:35,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252827307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:35,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:35,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:33:35,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874578443] [2024-06-27 18:33:35,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:35,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:33:35,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:35,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:33:35,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:33:35,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:33:35,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 669 transitions, 11599 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:35,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:35,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:33:35,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:38,562 INFO L124 PetriNetUnfolderBase]: 3828/8052 cut-off events. [2024-06-27 18:33:38,562 INFO L125 PetriNetUnfolderBase]: For 240243/240246 co-relation queries the response was YES. [2024-06-27 18:33:38,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48778 conditions, 8052 events. 3828/8052 cut-off events. For 240243/240246 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 71084 event pairs, 1180 based on Foata normal form. 5/7495 useless extension candidates. Maximal degree in co-relation 48559. Up to 4684 conditions per place. [2024-06-27 18:33:38,679 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 546 selfloop transitions, 158 changer transitions 0/712 dead transitions. [2024-06-27 18:33:38,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 712 transitions, 13529 flow [2024-06-27 18:33:38,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:33:38,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:33:38,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 197 transitions. [2024-06-27 18:33:38,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4436936936936937 [2024-06-27 18:33:38,680 INFO L175 Difference]: Start difference. First operand has 487 places, 669 transitions, 11599 flow. Second operand 12 states and 197 transitions. [2024-06-27 18:33:38,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 712 transitions, 13529 flow [2024-06-27 18:33:40,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 712 transitions, 13259 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-27 18:33:40,770 INFO L231 Difference]: Finished difference. Result has 489 places, 672 transitions, 11735 flow [2024-06-27 18:33:40,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11338, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=669, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11735, PETRI_PLACES=489, PETRI_TRANSITIONS=672} [2024-06-27 18:33:40,771 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 448 predicate places. [2024-06-27 18:33:40,771 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 672 transitions, 11735 flow [2024-06-27 18:33:40,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:40,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:40,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:40,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 18:33:40,772 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:33:40,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:40,772 INFO L85 PathProgramCache]: Analyzing trace with hash 72716433, now seen corresponding path program 9 times [2024-06-27 18:33:40,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:40,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005579067] [2024-06-27 18:33:40,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:40,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:41,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:33:41,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:41,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005579067] [2024-06-27 18:33:41,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005579067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:41,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:41,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:33:41,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627717406] [2024-06-27 18:33:41,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:41,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:33:41,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:41,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:33:41,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:33:41,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:33:41,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 672 transitions, 11735 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:41,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:41,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:33:41,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:44,303 INFO L124 PetriNetUnfolderBase]: 3882/8091 cut-off events. [2024-06-27 18:33:44,303 INFO L125 PetriNetUnfolderBase]: For 238621/238624 co-relation queries the response was YES. [2024-06-27 18:33:44,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49569 conditions, 8091 events. 3882/8091 cut-off events. For 238621/238624 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 70950 event pairs, 1382 based on Foata normal form. 5/7512 useless extension candidates. Maximal degree in co-relation 49350. Up to 6304 conditions per place. [2024-06-27 18:33:44,435 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 555 selfloop transitions, 156 changer transitions 0/719 dead transitions. [2024-06-27 18:33:44,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 719 transitions, 13909 flow [2024-06-27 18:33:44,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:33:44,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:33:44,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 192 transitions. [2024-06-27 18:33:44,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 18:33:44,436 INFO L175 Difference]: Start difference. First operand has 489 places, 672 transitions, 11735 flow. Second operand 12 states and 192 transitions. [2024-06-27 18:33:44,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 719 transitions, 13909 flow [2024-06-27 18:33:46,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 719 transitions, 13643 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-27 18:33:46,963 INFO L231 Difference]: Finished difference. Result has 491 places, 684 transitions, 12045 flow [2024-06-27 18:33:46,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11471, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=672, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12045, PETRI_PLACES=491, PETRI_TRANSITIONS=684} [2024-06-27 18:33:46,963 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 450 predicate places. [2024-06-27 18:33:46,964 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 684 transitions, 12045 flow [2024-06-27 18:33:46,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:46,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:46,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:46,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 18:33:46,964 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:33:46,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:46,964 INFO L85 PathProgramCache]: Analyzing trace with hash 72716247, now seen corresponding path program 20 times [2024-06-27 18:33:46,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:46,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108743268] [2024-06-27 18:33:46,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:46,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:47,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:33:47,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:47,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108743268] [2024-06-27 18:33:47,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108743268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:47,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:47,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:33:47,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672384007] [2024-06-27 18:33:47,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:47,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:33:47,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:47,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:33:47,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:33:47,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:33:47,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 684 transitions, 12045 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:47,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:47,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:33:47,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:50,705 INFO L124 PetriNetUnfolderBase]: 4026/8444 cut-off events. [2024-06-27 18:33:50,705 INFO L125 PetriNetUnfolderBase]: For 321891/321894 co-relation queries the response was YES. [2024-06-27 18:33:50,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50883 conditions, 8444 events. 4026/8444 cut-off events. For 321891/321894 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 74706 event pairs, 1439 based on Foata normal form. 19/7858 useless extension candidates. Maximal degree in co-relation 50664. Up to 6063 conditions per place. [2024-06-27 18:33:50,844 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 547 selfloop transitions, 183 changer transitions 0/738 dead transitions. [2024-06-27 18:33:50,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 738 transitions, 14113 flow [2024-06-27 18:33:50,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 18:33:50,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 18:33:50,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 220 transitions. [2024-06-27 18:33:50,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4247104247104247 [2024-06-27 18:33:50,845 INFO L175 Difference]: Start difference. First operand has 491 places, 684 transitions, 12045 flow. Second operand 14 states and 220 transitions. [2024-06-27 18:33:50,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 738 transitions, 14113 flow [2024-06-27 18:33:53,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 738 transitions, 13726 flow, removed 89 selfloop flow, removed 9 redundant places. [2024-06-27 18:33:53,351 INFO L231 Difference]: Finished difference. Result has 497 places, 691 transitions, 12349 flow [2024-06-27 18:33:53,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11678, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=12349, PETRI_PLACES=497, PETRI_TRANSITIONS=691} [2024-06-27 18:33:53,352 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 456 predicate places. [2024-06-27 18:33:53,352 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 691 transitions, 12349 flow [2024-06-27 18:33:53,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:53,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:53,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:53,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 18:33:53,352 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:33:53,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:53,353 INFO L85 PathProgramCache]: Analyzing trace with hash 72711597, now seen corresponding path program 21 times [2024-06-27 18:33:53,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:53,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309764486] [2024-06-27 18:33:53,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:53,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:54,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:33:54,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:54,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309764486] [2024-06-27 18:33:54,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309764486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:54,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:54,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:33:54,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676693746] [2024-06-27 18:33:54,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:54,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:33:54,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:54,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:33:54,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:33:54,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:33:54,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 691 transitions, 12349 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:54,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:54,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:33:54,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:57,110 INFO L124 PetriNetUnfolderBase]: 4023/8445 cut-off events. [2024-06-27 18:33:57,110 INFO L125 PetriNetUnfolderBase]: For 233955/233958 co-relation queries the response was YES. [2024-06-27 18:33:57,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50700 conditions, 8445 events. 4023/8445 cut-off events. For 233955/233958 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 74796 event pairs, 1331 based on Foata normal form. 5/7865 useless extension candidates. Maximal degree in co-relation 50479. Up to 5260 conditions per place. [2024-06-27 18:33:57,253 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 538 selfloop transitions, 195 changer transitions 0/741 dead transitions. [2024-06-27 18:33:57,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 741 transitions, 14230 flow [2024-06-27 18:33:57,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:33:57,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:33:57,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 212 transitions. [2024-06-27 18:33:57,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4407484407484408 [2024-06-27 18:33:57,254 INFO L175 Difference]: Start difference. First operand has 497 places, 691 transitions, 12349 flow. Second operand 13 states and 212 transitions. [2024-06-27 18:33:57,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 741 transitions, 14230 flow [2024-06-27 18:33:59,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 741 transitions, 13873 flow, removed 47 selfloop flow, removed 12 redundant places. [2024-06-27 18:33:59,964 INFO L231 Difference]: Finished difference. Result has 498 places, 691 transitions, 12420 flow [2024-06-27 18:33:59,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11992, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12420, PETRI_PLACES=498, PETRI_TRANSITIONS=691} [2024-06-27 18:33:59,964 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 457 predicate places. [2024-06-27 18:33:59,964 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 691 transitions, 12420 flow [2024-06-27 18:33:59,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:59,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:59,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:59,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 18:33:59,965 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:33:59,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:59,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1891063493, now seen corresponding path program 10 times [2024-06-27 18:33:59,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:59,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921958993] [2024-06-27 18:33:59,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:59,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:00,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:34:00,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:00,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921958993] [2024-06-27 18:34:00,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921958993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:00,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:00,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:34:00,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651666499] [2024-06-27 18:34:00,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:00,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:34:00,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:00,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:34:00,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:34:00,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:34:00,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 691 transitions, 12420 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:00,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:00,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:34:00,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:03,706 INFO L124 PetriNetUnfolderBase]: 4077/8492 cut-off events. [2024-06-27 18:34:03,706 INFO L125 PetriNetUnfolderBase]: For 235444/235444 co-relation queries the response was YES. [2024-06-27 18:34:03,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51486 conditions, 8492 events. 4077/8492 cut-off events. For 235444/235444 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 74945 event pairs, 1504 based on Foata normal form. 2/7874 useless extension candidates. Maximal degree in co-relation 51265. Up to 6856 conditions per place. [2024-06-27 18:34:03,812 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 630 selfloop transitions, 96 changer transitions 0/734 dead transitions. [2024-06-27 18:34:03,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 734 transitions, 14380 flow [2024-06-27 18:34:03,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:34:03,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:34:03,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-27 18:34:03,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176904176904177 [2024-06-27 18:34:03,813 INFO L175 Difference]: Start difference. First operand has 498 places, 691 transitions, 12420 flow. Second operand 11 states and 170 transitions. [2024-06-27 18:34:03,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 734 transitions, 14380 flow [2024-06-27 18:34:05,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 734 transitions, 13998 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-27 18:34:05,927 INFO L231 Difference]: Finished difference. Result has 497 places, 703 transitions, 12488 flow [2024-06-27 18:34:05,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12038, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=595, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12488, PETRI_PLACES=497, PETRI_TRANSITIONS=703} [2024-06-27 18:34:05,927 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 456 predicate places. [2024-06-27 18:34:05,928 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 703 transitions, 12488 flow [2024-06-27 18:34:05,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:05,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:05,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:05,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 18:34:05,928 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:34:05,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:05,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1530336103, now seen corresponding path program 11 times [2024-06-27 18:34:05,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:05,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137150033] [2024-06-27 18:34:05,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:05,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:05,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:06,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:34:06,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:06,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137150033] [2024-06-27 18:34:06,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137150033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:06,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:06,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:34:06,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005678689] [2024-06-27 18:34:06,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:06,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:34:06,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:06,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:34:06,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:34:06,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:34:06,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 703 transitions, 12488 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:06,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:06,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:34:06,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:09,451 INFO L124 PetriNetUnfolderBase]: 4155/8603 cut-off events. [2024-06-27 18:34:09,451 INFO L125 PetriNetUnfolderBase]: For 230114/230114 co-relation queries the response was YES. [2024-06-27 18:34:09,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52326 conditions, 8603 events. 4155/8603 cut-off events. For 230114/230114 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 75724 event pairs, 1503 based on Foata normal form. 2/7960 useless extension candidates. Maximal degree in co-relation 52105. Up to 6898 conditions per place. [2024-06-27 18:34:09,576 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 632 selfloop transitions, 120 changer transitions 0/760 dead transitions. [2024-06-27 18:34:09,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 760 transitions, 14864 flow [2024-06-27 18:34:09,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:34:09,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:34:09,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-27 18:34:09,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226044226044226 [2024-06-27 18:34:09,577 INFO L175 Difference]: Start difference. First operand has 497 places, 703 transitions, 12488 flow. Second operand 11 states and 172 transitions. [2024-06-27 18:34:09,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 760 transitions, 14864 flow [2024-06-27 18:34:11,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 760 transitions, 14653 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-27 18:34:11,872 INFO L231 Difference]: Finished difference. Result has 501 places, 727 transitions, 13156 flow [2024-06-27 18:34:11,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12277, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=583, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13156, PETRI_PLACES=501, PETRI_TRANSITIONS=727} [2024-06-27 18:34:11,873 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 460 predicate places. [2024-06-27 18:34:11,873 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 727 transitions, 13156 flow [2024-06-27 18:34:11,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:11,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:11,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:11,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 18:34:11,874 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:34:11,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:11,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1534804753, now seen corresponding path program 12 times [2024-06-27 18:34:11,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:11,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383878681] [2024-06-27 18:34:11,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:11,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:11,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:12,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:34:12,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:12,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383878681] [2024-06-27 18:34:12,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383878681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:12,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:12,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:34:12,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997330207] [2024-06-27 18:34:12,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:12,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:34:12,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:12,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:34:12,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:34:12,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:34:12,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 727 transitions, 13156 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:12,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:12,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:34:12,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:15,507 INFO L124 PetriNetUnfolderBase]: 4151/8594 cut-off events. [2024-06-27 18:34:15,507 INFO L125 PetriNetUnfolderBase]: For 220151/220151 co-relation queries the response was YES. [2024-06-27 18:34:15,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52162 conditions, 8594 events. 4151/8594 cut-off events. For 220151/220151 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 75606 event pairs, 1490 based on Foata normal form. 2/7948 useless extension candidates. Maximal degree in co-relation 51939. Up to 6802 conditions per place. [2024-06-27 18:34:15,650 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 574 selfloop transitions, 184 changer transitions 0/766 dead transitions. [2024-06-27 18:34:15,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 766 transitions, 15058 flow [2024-06-27 18:34:15,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 18:34:15,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 18:34:15,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 208 transitions. [2024-06-27 18:34:15,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015444015444015 [2024-06-27 18:34:15,651 INFO L175 Difference]: Start difference. First operand has 501 places, 727 transitions, 13156 flow. Second operand 14 states and 208 transitions. [2024-06-27 18:34:15,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 766 transitions, 15058 flow [2024-06-27 18:34:18,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 766 transitions, 14678 flow, removed 88 selfloop flow, removed 8 redundant places. [2024-06-27 18:34:18,108 INFO L231 Difference]: Finished difference. Result has 507 places, 727 transitions, 13200 flow [2024-06-27 18:34:18,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12776, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=727, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=13200, PETRI_PLACES=507, PETRI_TRANSITIONS=727} [2024-06-27 18:34:18,109 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 466 predicate places. [2024-06-27 18:34:18,109 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 727 transitions, 13200 flow [2024-06-27 18:34:18,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:18,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:18,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:18,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 18:34:18,110 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:34:18,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:18,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1890468847, now seen corresponding path program 13 times [2024-06-27 18:34:18,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:18,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799230784] [2024-06-27 18:34:18,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:18,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:18,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:18,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:34:18,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:18,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799230784] [2024-06-27 18:34:18,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799230784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:18,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:18,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:34:18,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156152862] [2024-06-27 18:34:18,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:18,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:34:18,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:18,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:34:18,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:34:19,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:34:19,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 727 transitions, 13200 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:19,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:19,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:34:19,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:21,663 INFO L124 PetriNetUnfolderBase]: 4164/8617 cut-off events. [2024-06-27 18:34:21,663 INFO L125 PetriNetUnfolderBase]: For 222334/222337 co-relation queries the response was YES. [2024-06-27 18:34:21,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52467 conditions, 8617 events. 4164/8617 cut-off events. For 222334/222337 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 75789 event pairs, 1381 based on Foata normal form. 5/7973 useless extension candidates. Maximal degree in co-relation 52243. Up to 6520 conditions per place. [2024-06-27 18:34:21,807 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 559 selfloop transitions, 200 changer transitions 0/767 dead transitions. [2024-06-27 18:34:21,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 767 transitions, 15250 flow [2024-06-27 18:34:21,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:34:21,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:34:21,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 18:34:21,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:34:21,808 INFO L175 Difference]: Start difference. First operand has 507 places, 727 transitions, 13200 flow. Second operand 11 states and 187 transitions. [2024-06-27 18:34:21,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 767 transitions, 15250 flow [2024-06-27 18:34:24,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 767 transitions, 14727 flow, removed 17 selfloop flow, removed 14 redundant places. [2024-06-27 18:34:24,386 INFO L231 Difference]: Finished difference. Result has 505 places, 730 transitions, 13221 flow [2024-06-27 18:34:24,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12677, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=727, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=527, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13221, PETRI_PLACES=505, PETRI_TRANSITIONS=730} [2024-06-27 18:34:24,386 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 464 predicate places. [2024-06-27 18:34:24,386 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 730 transitions, 13221 flow [2024-06-27 18:34:24,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:24,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:24,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:24,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 18:34:24,387 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:34:24,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:24,387 INFO L85 PathProgramCache]: Analyzing trace with hash -823210663, now seen corresponding path program 22 times [2024-06-27 18:34:24,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:24,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425543625] [2024-06-27 18:34:24,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:24,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:24,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:25,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:34:25,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:25,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425543625] [2024-06-27 18:34:25,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425543625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:25,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:25,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:34:25,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932637603] [2024-06-27 18:34:25,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:25,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:34:25,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:25,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:34:25,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:34:25,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:34:25,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 730 transitions, 13221 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:25,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:25,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:34:25,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:27,897 INFO L124 PetriNetUnfolderBase]: 4181/8659 cut-off events. [2024-06-27 18:34:27,898 INFO L125 PetriNetUnfolderBase]: For 223299/223302 co-relation queries the response was YES. [2024-06-27 18:34:27,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52768 conditions, 8659 events. 4181/8659 cut-off events. For 223299/223302 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 76360 event pairs, 1513 based on Foata normal form. 5/8015 useless extension candidates. Maximal degree in co-relation 52543. Up to 6899 conditions per place. [2024-06-27 18:34:28,031 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 625 selfloop transitions, 128 changer transitions 0/761 dead transitions. [2024-06-27 18:34:28,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 761 transitions, 15114 flow [2024-06-27 18:34:28,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:34:28,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:34:28,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-27 18:34:28,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4348894348894349 [2024-06-27 18:34:28,032 INFO L175 Difference]: Start difference. First operand has 505 places, 730 transitions, 13221 flow. Second operand 11 states and 177 transitions. [2024-06-27 18:34:28,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 761 transitions, 15114 flow [2024-06-27 18:34:30,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 761 transitions, 14651 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-27 18:34:30,250 INFO L231 Difference]: Finished difference. Result has 508 places, 731 transitions, 13066 flow [2024-06-27 18:34:30,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12758, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=730, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13066, PETRI_PLACES=508, PETRI_TRANSITIONS=731} [2024-06-27 18:34:30,250 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 467 predicate places. [2024-06-27 18:34:30,250 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 731 transitions, 13066 flow [2024-06-27 18:34:30,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:30,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:30,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:30,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 18:34:30,251 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:34:30,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:30,251 INFO L85 PathProgramCache]: Analyzing trace with hash -823388293, now seen corresponding path program 23 times [2024-06-27 18:34:30,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:30,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126105553] [2024-06-27 18:34:30,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:30,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:31,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:34:31,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:31,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126105553] [2024-06-27 18:34:31,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126105553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:31,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:31,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:34:31,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585008582] [2024-06-27 18:34:31,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:31,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:34:31,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:31,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:34:31,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:34:31,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:34:31,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 731 transitions, 13066 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:31,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:31,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:34:31,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:33,808 INFO L124 PetriNetUnfolderBase]: 4218/8740 cut-off events. [2024-06-27 18:34:33,808 INFO L125 PetriNetUnfolderBase]: For 240148/240151 co-relation queries the response was YES. [2024-06-27 18:34:33,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53397 conditions, 8740 events. 4218/8740 cut-off events. For 240148/240151 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 77227 event pairs, 1487 based on Foata normal form. 5/8094 useless extension candidates. Maximal degree in co-relation 53171. Up to 6796 conditions per place. [2024-06-27 18:34:33,941 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 623 selfloop transitions, 137 changer transitions 0/768 dead transitions. [2024-06-27 18:34:33,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 768 transitions, 15255 flow [2024-06-27 18:34:33,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:34:33,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:34:33,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 18:34:33,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-27 18:34:33,942 INFO L175 Difference]: Start difference. First operand has 508 places, 731 transitions, 13066 flow. Second operand 11 states and 184 transitions. [2024-06-27 18:34:33,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 768 transitions, 15255 flow [2024-06-27 18:34:36,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 768 transitions, 14969 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 18:34:36,512 INFO L231 Difference]: Finished difference. Result has 510 places, 733 transitions, 13154 flow [2024-06-27 18:34:36,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12780, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=731, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=595, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13154, PETRI_PLACES=510, PETRI_TRANSITIONS=733} [2024-06-27 18:34:36,512 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 469 predicate places. [2024-06-27 18:34:36,512 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 733 transitions, 13154 flow [2024-06-27 18:34:36,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:36,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:36,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:36,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 18:34:36,513 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:34:36,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:36,513 INFO L85 PathProgramCache]: Analyzing trace with hash -827852107, now seen corresponding path program 14 times [2024-06-27 18:34:36,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:36,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994692031] [2024-06-27 18:34:36,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:36,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:36,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:37,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:34:37,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:37,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994692031] [2024-06-27 18:34:37,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994692031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:37,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:37,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:34:37,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715753905] [2024-06-27 18:34:37,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:37,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:34:37,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:37,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:34:37,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:34:37,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:34:37,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 733 transitions, 13154 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:37,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:37,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:34:37,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:39,995 INFO L124 PetriNetUnfolderBase]: 4248/8789 cut-off events. [2024-06-27 18:34:39,995 INFO L125 PetriNetUnfolderBase]: For 260603/260606 co-relation queries the response was YES. [2024-06-27 18:34:40,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54389 conditions, 8789 events. 4248/8789 cut-off events. For 260603/260606 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 77498 event pairs, 1395 based on Foata normal form. 5/8131 useless extension candidates. Maximal degree in co-relation 54162. Up to 6416 conditions per place. [2024-06-27 18:34:40,149 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 526 selfloop transitions, 239 changer transitions 0/773 dead transitions. [2024-06-27 18:34:40,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 773 transitions, 15476 flow [2024-06-27 18:34:40,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:34:40,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:34:40,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 200 transitions. [2024-06-27 18:34:40,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-06-27 18:34:40,150 INFO L175 Difference]: Start difference. First operand has 510 places, 733 transitions, 13154 flow. Second operand 12 states and 200 transitions. [2024-06-27 18:34:40,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 773 transitions, 15476 flow [2024-06-27 18:34:43,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 773 transitions, 15288 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-27 18:34:43,111 INFO L231 Difference]: Finished difference. Result has 516 places, 737 transitions, 13660 flow [2024-06-27 18:34:43,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12966, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=733, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=237, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13660, PETRI_PLACES=516, PETRI_TRANSITIONS=737} [2024-06-27 18:34:43,112 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 475 predicate places. [2024-06-27 18:34:43,112 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 737 transitions, 13660 flow [2024-06-27 18:34:43,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:43,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:43,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:43,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 18:34:43,112 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:34:43,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:43,113 INFO L85 PathProgramCache]: Analyzing trace with hash -827852293, now seen corresponding path program 24 times [2024-06-27 18:34:43,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:43,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422864726] [2024-06-27 18:34:43,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:43,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:43,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:34:43,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:43,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422864726] [2024-06-27 18:34:43,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422864726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:43,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:43,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:34:43,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915848802] [2024-06-27 18:34:43,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:43,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:34:43,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:43,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:34:43,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:34:44,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:34:44,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 737 transitions, 13660 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:44,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:44,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:34:44,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:46,820 INFO L124 PetriNetUnfolderBase]: 4265/8828 cut-off events. [2024-06-27 18:34:46,820 INFO L125 PetriNetUnfolderBase]: For 265452/265455 co-relation queries the response was YES. [2024-06-27 18:34:46,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55287 conditions, 8828 events. 4265/8828 cut-off events. For 265452/265455 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 78006 event pairs, 1536 based on Foata normal form. 5/8170 useless extension candidates. Maximal degree in co-relation 55058. Up to 6946 conditions per place. [2024-06-27 18:34:46,965 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 604 selfloop transitions, 155 changer transitions 0/767 dead transitions. [2024-06-27 18:34:46,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 767 transitions, 15536 flow [2024-06-27 18:34:46,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:34:46,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:34:46,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-27 18:34:46,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398034398034398 [2024-06-27 18:34:46,966 INFO L175 Difference]: Start difference. First operand has 516 places, 737 transitions, 13660 flow. Second operand 11 states and 179 transitions. [2024-06-27 18:34:46,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 767 transitions, 15536 flow [2024-06-27 18:34:50,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 767 transitions, 15137 flow, removed 68 selfloop flow, removed 11 redundant places. [2024-06-27 18:34:50,220 INFO L231 Difference]: Finished difference. Result has 517 places, 739 transitions, 13691 flow [2024-06-27 18:34:50,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13261, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=737, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=582, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13691, PETRI_PLACES=517, PETRI_TRANSITIONS=739} [2024-06-27 18:34:50,220 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 476 predicate places. [2024-06-27 18:34:50,220 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 739 transitions, 13691 flow [2024-06-27 18:34:50,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:50,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:50,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:50,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 18:34:50,221 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:34:50,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:50,222 INFO L85 PathProgramCache]: Analyzing trace with hash -823383457, now seen corresponding path program 15 times [2024-06-27 18:34:50,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:50,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346904614] [2024-06-27 18:34:50,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:50,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:51,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:34:51,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:51,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346904614] [2024-06-27 18:34:51,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346904614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:51,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:51,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:34:51,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708482005] [2024-06-27 18:34:51,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:51,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:34:51,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:51,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:34:51,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:34:51,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:34:51,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 739 transitions, 13691 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:51,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:51,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:34:51,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:54,114 INFO L124 PetriNetUnfolderBase]: 4278/8846 cut-off events. [2024-06-27 18:34:54,114 INFO L125 PetriNetUnfolderBase]: For 265470/265473 co-relation queries the response was YES. [2024-06-27 18:34:54,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55623 conditions, 8846 events. 4278/8846 cut-off events. For 265470/265473 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 78079 event pairs, 1416 based on Foata normal form. 5/8183 useless extension candidates. Maximal degree in co-relation 55394. Up to 6671 conditions per place. [2024-06-27 18:34:54,221 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 564 selfloop transitions, 208 changer transitions 0/780 dead transitions. [2024-06-27 18:34:54,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 780 transitions, 15762 flow [2024-06-27 18:34:54,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:34:54,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:34:54,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 201 transitions. [2024-06-27 18:34:54,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527027027027027 [2024-06-27 18:34:54,222 INFO L175 Difference]: Start difference. First operand has 517 places, 739 transitions, 13691 flow. Second operand 12 states and 201 transitions. [2024-06-27 18:34:54,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 780 transitions, 15762 flow [2024-06-27 18:34:56,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 780 transitions, 15462 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 18:34:56,937 INFO L231 Difference]: Finished difference. Result has 521 places, 741 transitions, 13907 flow [2024-06-27 18:34:56,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13391, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=739, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13907, PETRI_PLACES=521, PETRI_TRANSITIONS=741} [2024-06-27 18:34:56,938 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 480 predicate places. [2024-06-27 18:34:56,938 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 741 transitions, 13907 flow [2024-06-27 18:34:56,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:56,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:56,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:56,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 18:34:56,939 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:34:56,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:56,939 INFO L85 PathProgramCache]: Analyzing trace with hash -823383643, now seen corresponding path program 25 times [2024-06-27 18:34:56,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:56,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004989036] [2024-06-27 18:34:56,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:56,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:56,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:57,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:34:57,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:57,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004989036] [2024-06-27 18:34:57,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004989036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:57,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:57,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:34:57,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246626738] [2024-06-27 18:34:57,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:57,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:34:57,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:57,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:34:57,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:34:57,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:34:57,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 741 transitions, 13907 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:57,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:57,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:34:57,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:00,834 INFO L124 PetriNetUnfolderBase]: 4275/8841 cut-off events. [2024-06-27 18:35:00,834 INFO L125 PetriNetUnfolderBase]: For 254428/254431 co-relation queries the response was YES. [2024-06-27 18:35:00,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55404 conditions, 8841 events. 4275/8841 cut-off events. For 254428/254431 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 78103 event pairs, 1531 based on Foata normal form. 5/8180 useless extension candidates. Maximal degree in co-relation 55174. Up to 7034 conditions per place. [2024-06-27 18:35:00,977 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 630 selfloop transitions, 133 changer transitions 0/771 dead transitions. [2024-06-27 18:35:00,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 771 transitions, 15776 flow [2024-06-27 18:35:00,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:35:00,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:35:00,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-27 18:35:00,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398034398034398 [2024-06-27 18:35:00,978 INFO L175 Difference]: Start difference. First operand has 521 places, 741 transitions, 13907 flow. Second operand 11 states and 179 transitions. [2024-06-27 18:35:00,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 771 transitions, 15776 flow [2024-06-27 18:35:03,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 771 transitions, 15123 flow, removed 50 selfloop flow, removed 13 redundant places. [2024-06-27 18:35:03,650 INFO L231 Difference]: Finished difference. Result has 519 places, 741 transitions, 13526 flow [2024-06-27 18:35:03,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13254, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=741, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=608, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13526, PETRI_PLACES=519, PETRI_TRANSITIONS=741} [2024-06-27 18:35:03,651 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 478 predicate places. [2024-06-27 18:35:03,651 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 741 transitions, 13526 flow [2024-06-27 18:35:03,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:03,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:03,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:03,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 18:35:03,651 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:35:03,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:03,652 INFO L85 PathProgramCache]: Analyzing trace with hash -827856943, now seen corresponding path program 26 times [2024-06-27 18:35:03,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:03,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142099651] [2024-06-27 18:35:03,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:03,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:03,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:04,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:04,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:04,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142099651] [2024-06-27 18:35:04,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142099651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:04,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:04,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:35:04,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538639038] [2024-06-27 18:35:04,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:04,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:35:04,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:04,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:35:04,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:35:04,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:35:04,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 741 transitions, 13526 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:04,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:04,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:35:04,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:07,375 INFO L124 PetriNetUnfolderBase]: 4292/8877 cut-off events. [2024-06-27 18:35:07,375 INFO L125 PetriNetUnfolderBase]: For 255109/255112 co-relation queries the response was YES. [2024-06-27 18:35:07,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54897 conditions, 8877 events. 4292/8877 cut-off events. For 255109/255112 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 78445 event pairs, 1522 based on Foata normal form. 5/8216 useless extension candidates. Maximal degree in co-relation 54668. Up to 6887 conditions per place. [2024-06-27 18:35:07,524 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 609 selfloop transitions, 157 changer transitions 0/774 dead transitions. [2024-06-27 18:35:07,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 774 transitions, 15416 flow [2024-06-27 18:35:07,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:35:07,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:35:07,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 18:35:07,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-27 18:35:07,525 INFO L175 Difference]: Start difference. First operand has 519 places, 741 transitions, 13526 flow. Second operand 11 states and 184 transitions. [2024-06-27 18:35:07,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 774 transitions, 15416 flow [2024-06-27 18:35:10,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 774 transitions, 15133 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 18:35:10,543 INFO L231 Difference]: Finished difference. Result has 519 places, 742 transitions, 13615 flow [2024-06-27 18:35:10,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13243, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=741, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=584, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13615, PETRI_PLACES=519, PETRI_TRANSITIONS=742} [2024-06-27 18:35:10,543 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 478 predicate places. [2024-06-27 18:35:10,543 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 742 transitions, 13615 flow [2024-06-27 18:35:10,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:10,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:10,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:10,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 18:35:10,543 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:35:10,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:10,544 INFO L85 PathProgramCache]: Analyzing trace with hash -827972263, now seen corresponding path program 27 times [2024-06-27 18:35:10,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:10,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557013528] [2024-06-27 18:35:10,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:10,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:10,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:11,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:11,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:11,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557013528] [2024-06-27 18:35:11,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557013528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:11,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:11,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:35:11,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517976577] [2024-06-27 18:35:11,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:11,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:35:11,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:11,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:35:11,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:35:11,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:35:11,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 742 transitions, 13615 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:11,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:11,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:35:11,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:14,449 INFO L124 PetriNetUnfolderBase]: 4433/9182 cut-off events. [2024-06-27 18:35:14,449 INFO L125 PetriNetUnfolderBase]: For 362093/362096 co-relation queries the response was YES. [2024-06-27 18:35:14,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58518 conditions, 9182 events. 4433/9182 cut-off events. For 362093/362096 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 81637 event pairs, 1469 based on Foata normal form. 5/8530 useless extension candidates. Maximal degree in co-relation 58289. Up to 5405 conditions per place. [2024-06-27 18:35:14,613 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 546 selfloop transitions, 240 changer transitions 0/794 dead transitions. [2024-06-27 18:35:14,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 794 transitions, 16191 flow [2024-06-27 18:35:14,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:35:14,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:35:14,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-27 18:35:14,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4963144963144963 [2024-06-27 18:35:14,614 INFO L175 Difference]: Start difference. First operand has 519 places, 742 transitions, 13615 flow. Second operand 11 states and 202 transitions. [2024-06-27 18:35:14,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 794 transitions, 16191 flow [2024-06-27 18:35:17,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 794 transitions, 15721 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-27 18:35:17,746 INFO L231 Difference]: Finished difference. Result has 520 places, 744 transitions, 13737 flow [2024-06-27 18:35:17,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13145, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=742, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13737, PETRI_PLACES=520, PETRI_TRANSITIONS=744} [2024-06-27 18:35:17,747 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 479 predicate places. [2024-06-27 18:35:17,747 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 744 transitions, 13737 flow [2024-06-27 18:35:17,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:17,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:17,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:17,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 18:35:17,747 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:35:17,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:17,747 INFO L85 PathProgramCache]: Analyzing trace with hash -657149863, now seen corresponding path program 28 times [2024-06-27 18:35:17,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:17,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012936637] [2024-06-27 18:35:17,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:17,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:18,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:18,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:18,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012936637] [2024-06-27 18:35:18,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012936637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:18,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:18,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:35:18,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644931117] [2024-06-27 18:35:18,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:18,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:35:18,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:18,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:35:18,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:35:18,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:35:18,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 744 transitions, 13737 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:18,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:18,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:35:18,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:21,525 INFO L124 PetriNetUnfolderBase]: 4467/9278 cut-off events. [2024-06-27 18:35:21,525 INFO L125 PetriNetUnfolderBase]: For 369551/369554 co-relation queries the response was YES. [2024-06-27 18:35:21,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59092 conditions, 9278 events. 4467/9278 cut-off events. For 369551/369554 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 82882 event pairs, 1622 based on Foata normal form. 5/8593 useless extension candidates. Maximal degree in co-relation 58864. Up to 7383 conditions per place. [2024-06-27 18:35:21,672 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 632 selfloop transitions, 140 changer transitions 0/780 dead transitions. [2024-06-27 18:35:21,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 780 transitions, 15780 flow [2024-06-27 18:35:21,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:35:21,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:35:21,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-27 18:35:21,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4348894348894349 [2024-06-27 18:35:21,673 INFO L175 Difference]: Start difference. First operand has 520 places, 744 transitions, 13737 flow. Second operand 11 states and 177 transitions. [2024-06-27 18:35:21,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 780 transitions, 15780 flow [2024-06-27 18:35:25,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 780 transitions, 15435 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-27 18:35:25,144 INFO L231 Difference]: Finished difference. Result has 524 places, 746 transitions, 13748 flow [2024-06-27 18:35:25,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13402, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=744, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=604, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13748, PETRI_PLACES=524, PETRI_TRANSITIONS=746} [2024-06-27 18:35:25,144 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 483 predicate places. [2024-06-27 18:35:25,145 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 746 transitions, 13748 flow [2024-06-27 18:35:25,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:25,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:25,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:25,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 18:35:25,145 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:35:25,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:25,146 INFO L85 PathProgramCache]: Analyzing trace with hash -656976883, now seen corresponding path program 29 times [2024-06-27 18:35:25,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:25,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277887769] [2024-06-27 18:35:25,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:25,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:26,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:26,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:26,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277887769] [2024-06-27 18:35:26,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277887769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:26,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:26,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:35:26,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749994833] [2024-06-27 18:35:26,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:26,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:35:26,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:26,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:35:26,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:35:26,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:35:26,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 746 transitions, 13748 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:26,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:26,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:35:26,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:28,846 INFO L124 PetriNetUnfolderBase]: 4484/9317 cut-off events. [2024-06-27 18:35:28,846 INFO L125 PetriNetUnfolderBase]: For 368288/368291 co-relation queries the response was YES. [2024-06-27 18:35:28,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59291 conditions, 9317 events. 4484/9317 cut-off events. For 368288/368291 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 83304 event pairs, 1637 based on Foata normal form. 5/8630 useless extension candidates. Maximal degree in co-relation 59061. Up to 7446 conditions per place. [2024-06-27 18:35:28,997 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 643 selfloop transitions, 131 changer transitions 0/782 dead transitions. [2024-06-27 18:35:28,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 782 transitions, 15799 flow [2024-06-27 18:35:28,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:35:28,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:35:28,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-27 18:35:28,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 18:35:28,998 INFO L175 Difference]: Start difference. First operand has 524 places, 746 transitions, 13748 flow. Second operand 11 states and 176 transitions. [2024-06-27 18:35:28,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 782 transitions, 15799 flow [2024-06-27 18:35:32,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 782 transitions, 15447 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-27 18:35:32,365 INFO L231 Difference]: Finished difference. Result has 526 places, 747 transitions, 13712 flow [2024-06-27 18:35:32,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13396, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=746, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=615, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13712, PETRI_PLACES=526, PETRI_TRANSITIONS=747} [2024-06-27 18:35:32,365 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 485 predicate places. [2024-06-27 18:35:32,365 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 747 transitions, 13712 flow [2024-06-27 18:35:32,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:32,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:32,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:32,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 18:35:32,366 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:35:32,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:32,367 INFO L85 PathProgramCache]: Analyzing trace with hash -656976697, now seen corresponding path program 16 times [2024-06-27 18:35:32,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:32,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064150958] [2024-06-27 18:35:32,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:32,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:33,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:33,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:33,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064150958] [2024-06-27 18:35:33,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064150958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:33,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:33,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:35:33,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420537949] [2024-06-27 18:35:33,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:33,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:35:33,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:33,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:35:33,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:35:33,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:35:33,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 747 transitions, 13712 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:33,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:33,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:35:33,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:36,818 INFO L124 PetriNetUnfolderBase]: 4513/9362 cut-off events. [2024-06-27 18:35:36,818 INFO L125 PetriNetUnfolderBase]: For 373500/373503 co-relation queries the response was YES. [2024-06-27 18:35:36,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59561 conditions, 9362 events. 4513/9362 cut-off events. For 373500/373503 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 83621 event pairs, 1504 based on Foata normal form. 5/8668 useless extension candidates. Maximal degree in co-relation 59330. Up to 7149 conditions per place. [2024-06-27 18:35:36,948 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 589 selfloop transitions, 206 changer transitions 0/803 dead transitions. [2024-06-27 18:35:36,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 803 transitions, 16057 flow [2024-06-27 18:35:36,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:35:36,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:35:36,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 197 transitions. [2024-06-27 18:35:36,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4436936936936937 [2024-06-27 18:35:36,949 INFO L175 Difference]: Start difference. First operand has 526 places, 747 transitions, 13712 flow. Second operand 12 states and 197 transitions. [2024-06-27 18:35:36,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 803 transitions, 16057 flow [2024-06-27 18:35:40,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 803 transitions, 15763 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-27 18:35:40,168 INFO L231 Difference]: Finished difference. Result has 531 places, 757 transitions, 14110 flow [2024-06-27 18:35:40,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13418, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14110, PETRI_PLACES=531, PETRI_TRANSITIONS=757} [2024-06-27 18:35:40,169 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 490 predicate places. [2024-06-27 18:35:40,169 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 757 transitions, 14110 flow [2024-06-27 18:35:40,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:40,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:40,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:40,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 18:35:40,170 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:35:40,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:40,170 INFO L85 PathProgramCache]: Analyzing trace with hash 2056529647, now seen corresponding path program 17 times [2024-06-27 18:35:40,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:40,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589448387] [2024-06-27 18:35:40,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:40,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:41,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:41,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:41,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589448387] [2024-06-27 18:35:41,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589448387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:41,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:41,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:35:41,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454841816] [2024-06-27 18:35:41,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:41,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:35:41,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:41,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:35:41,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:35:41,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:35:41,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 757 transitions, 14110 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:41,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:41,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:35:41,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:44,063 INFO L124 PetriNetUnfolderBase]: 4526/9381 cut-off events. [2024-06-27 18:35:44,063 INFO L125 PetriNetUnfolderBase]: For 380424/380427 co-relation queries the response was YES. [2024-06-27 18:35:44,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60617 conditions, 9381 events. 4526/9381 cut-off events. For 380424/380427 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 83749 event pairs, 1506 based on Foata normal form. 5/8684 useless extension candidates. Maximal degree in co-relation 60383. Up to 7038 conditions per place. [2024-06-27 18:35:44,221 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 564 selfloop transitions, 227 changer transitions 0/799 dead transitions. [2024-06-27 18:35:44,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 799 transitions, 16541 flow [2024-06-27 18:35:44,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:35:44,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:35:44,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 18:35:44,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.457002457002457 [2024-06-27 18:35:44,222 INFO L175 Difference]: Start difference. First operand has 531 places, 757 transitions, 14110 flow. Second operand 11 states and 186 transitions. [2024-06-27 18:35:44,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 799 transitions, 16541 flow [2024-06-27 18:35:47,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 799 transitions, 16147 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-27 18:35:47,546 INFO L231 Difference]: Finished difference. Result has 534 places, 759 transitions, 14274 flow [2024-06-27 18:35:47,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13716, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=757, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=225, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14274, PETRI_PLACES=534, PETRI_TRANSITIONS=759} [2024-06-27 18:35:47,546 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 493 predicate places. [2024-06-27 18:35:47,546 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 759 transitions, 14274 flow [2024-06-27 18:35:47,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:47,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:47,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:47,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 18:35:47,547 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:35:47,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:47,547 INFO L85 PathProgramCache]: Analyzing trace with hash 2056524811, now seen corresponding path program 30 times [2024-06-27 18:35:47,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:47,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593133198] [2024-06-27 18:35:47,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:47,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:48,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:48,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:48,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593133198] [2024-06-27 18:35:48,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593133198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:48,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:48,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:35:48,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894235526] [2024-06-27 18:35:48,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:48,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:35:48,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:48,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:35:48,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:35:48,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:35:48,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 759 transitions, 14274 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:48,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:48,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:35:48,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:51,512 INFO L124 PetriNetUnfolderBase]: 4647/9701 cut-off events. [2024-06-27 18:35:51,512 INFO L125 PetriNetUnfolderBase]: For 475946/475949 co-relation queries the response was YES. [2024-06-27 18:35:51,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63433 conditions, 9701 events. 4647/9701 cut-off events. For 475946/475949 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 87175 event pairs, 1527 based on Foata normal form. 5/8993 useless extension candidates. Maximal degree in co-relation 63197. Up to 6524 conditions per place. [2024-06-27 18:35:51,676 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 592 selfloop transitions, 213 changer transitions 0/813 dead transitions. [2024-06-27 18:35:51,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 813 transitions, 17009 flow [2024-06-27 18:35:51,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:35:51,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:35:51,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-06-27 18:35:51,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48157248157248156 [2024-06-27 18:35:51,677 INFO L175 Difference]: Start difference. First operand has 534 places, 759 transitions, 14274 flow. Second operand 11 states and 196 transitions. [2024-06-27 18:35:51,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 813 transitions, 17009 flow [2024-06-27 18:35:55,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 813 transitions, 16446 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-27 18:35:55,696 INFO L231 Difference]: Finished difference. Result has 536 places, 760 transitions, 14191 flow [2024-06-27 18:35:55,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13711, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=759, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=212, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14191, PETRI_PLACES=536, PETRI_TRANSITIONS=760} [2024-06-27 18:35:55,697 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 495 predicate places. [2024-06-27 18:35:55,697 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 760 transitions, 14191 flow [2024-06-27 18:35:55,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:55,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:55,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:55,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 18:35:55,697 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:35:55,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:55,698 INFO L85 PathProgramCache]: Analyzing trace with hash 2062965247, now seen corresponding path program 18 times [2024-06-27 18:35:55,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:55,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730300584] [2024-06-27 18:35:55,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:55,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:55,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:56,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:56,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:56,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730300584] [2024-06-27 18:35:56,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730300584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:56,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:56,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:35:56,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759158825] [2024-06-27 18:35:56,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:56,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:35:56,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:56,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:35:56,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:35:56,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:35:56,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 760 transitions, 14191 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:56,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:56,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:35:56,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:00,084 INFO L124 PetriNetUnfolderBase]: 4690/9724 cut-off events. [2024-06-27 18:36:00,084 INFO L125 PetriNetUnfolderBase]: For 480478/480481 co-relation queries the response was YES. [2024-06-27 18:36:00,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63984 conditions, 9724 events. 4690/9724 cut-off events. For 480478/480481 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 87295 event pairs, 1555 based on Foata normal form. 5/9006 useless extension candidates. Maximal degree in co-relation 63747. Up to 7486 conditions per place. [2024-06-27 18:36:00,240 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 590 selfloop transitions, 213 changer transitions 0/811 dead transitions. [2024-06-27 18:36:00,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 811 transitions, 16556 flow [2024-06-27 18:36:00,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:36:00,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:36:00,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 18:36:00,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-27 18:36:00,241 INFO L175 Difference]: Start difference. First operand has 536 places, 760 transitions, 14191 flow. Second operand 11 states and 181 transitions. [2024-06-27 18:36:00,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 811 transitions, 16556 flow [2024-06-27 18:36:03,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 536 places, 811 transitions, 15942 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-27 18:36:03,852 INFO L231 Difference]: Finished difference. Result has 537 places, 770 transitions, 14245 flow [2024-06-27 18:36:03,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13597, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=760, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14245, PETRI_PLACES=537, PETRI_TRANSITIONS=770} [2024-06-27 18:36:03,852 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 496 predicate places. [2024-06-27 18:36:03,852 INFO L495 AbstractCegarLoop]: Abstraction has has 537 places, 770 transitions, 14245 flow [2024-06-27 18:36:03,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:03,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:03,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:03,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 18:36:03,853 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:36:03,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:03,853 INFO L85 PathProgramCache]: Analyzing trace with hash 2062958737, now seen corresponding path program 19 times [2024-06-27 18:36:03,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:03,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645464748] [2024-06-27 18:36:03,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:03,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:03,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:04,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:04,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:04,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645464748] [2024-06-27 18:36:04,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645464748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:04,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:04,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:36:04,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127797562] [2024-06-27 18:36:04,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:04,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:36:04,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:04,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:36:04,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:36:04,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:36:04,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 770 transitions, 14245 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:04,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:04,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:36:04,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:07,733 INFO L124 PetriNetUnfolderBase]: 4686/9718 cut-off events. [2024-06-27 18:36:07,733 INFO L125 PetriNetUnfolderBase]: For 462984/462987 co-relation queries the response was YES. [2024-06-27 18:36:07,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62934 conditions, 9718 events. 4686/9718 cut-off events. For 462984/462987 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 87239 event pairs, 1556 based on Foata normal form. 5/9000 useless extension candidates. Maximal degree in co-relation 62697. Up to 7400 conditions per place. [2024-06-27 18:36:07,892 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 572 selfloop transitions, 229 changer transitions 0/809 dead transitions. [2024-06-27 18:36:07,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 809 transitions, 16581 flow [2024-06-27 18:36:07,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:36:07,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:36:07,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 18:36:07,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-27 18:36:07,893 INFO L175 Difference]: Start difference. First operand has 537 places, 770 transitions, 14245 flow. Second operand 11 states and 184 transitions. [2024-06-27 18:36:07,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 809 transitions, 16581 flow [2024-06-27 18:36:11,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 809 transitions, 16125 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 18:36:11,902 INFO L231 Difference]: Finished difference. Result has 540 places, 770 transitions, 14255 flow [2024-06-27 18:36:11,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13789, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=229, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14255, PETRI_PLACES=540, PETRI_TRANSITIONS=770} [2024-06-27 18:36:11,902 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 499 predicate places. [2024-06-27 18:36:11,902 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 770 transitions, 14255 flow [2024-06-27 18:36:11,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:11,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:11,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:11,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 18:36:11,903 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:36:11,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:11,903 INFO L85 PathProgramCache]: Analyzing trace with hash 2062958551, now seen corresponding path program 31 times [2024-06-27 18:36:11,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:11,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718785000] [2024-06-27 18:36:11,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:11,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:11,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:12,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:12,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:12,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718785000] [2024-06-27 18:36:12,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718785000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:12,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:12,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:36:12,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56138882] [2024-06-27 18:36:12,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:12,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:36:12,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:12,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:36:12,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:36:12,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:36:12,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 770 transitions, 14255 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:12,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:12,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:36:12,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:15,667 INFO L124 PetriNetUnfolderBase]: 4683/9713 cut-off events. [2024-06-27 18:36:15,667 INFO L125 PetriNetUnfolderBase]: For 456577/456580 co-relation queries the response was YES. [2024-06-27 18:36:15,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62664 conditions, 9713 events. 4683/9713 cut-off events. For 456577/456580 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 87269 event pairs, 1705 based on Foata normal form. 5/8997 useless extension candidates. Maximal degree in co-relation 62426. Up to 7793 conditions per place. [2024-06-27 18:36:15,825 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 655 selfloop transitions, 140 changer transitions 0/803 dead transitions. [2024-06-27 18:36:15,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 803 transitions, 16253 flow [2024-06-27 18:36:15,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:36:15,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:36:15,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-06-27 18:36:15,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42997542997543 [2024-06-27 18:36:15,835 INFO L175 Difference]: Start difference. First operand has 540 places, 770 transitions, 14255 flow. Second operand 11 states and 175 transitions. [2024-06-27 18:36:15,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 803 transitions, 16253 flow [2024-06-27 18:36:20,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 803 transitions, 15613 flow, removed 39 selfloop flow, removed 11 redundant places. [2024-06-27 18:36:20,639 INFO L231 Difference]: Finished difference. Result has 540 places, 770 transitions, 13901 flow [2024-06-27 18:36:20,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13615, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=630, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13901, PETRI_PLACES=540, PETRI_TRANSITIONS=770} [2024-06-27 18:36:20,640 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 499 predicate places. [2024-06-27 18:36:20,640 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 770 transitions, 13901 flow [2024-06-27 18:36:20,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:20,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:20,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:20,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 18:36:20,640 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:36:20,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:20,641 INFO L85 PathProgramCache]: Analyzing trace with hash 2063204815, now seen corresponding path program 2 times [2024-06-27 18:36:20,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:20,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006695587] [2024-06-27 18:36:20,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:20,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:20,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:21,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:21,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:21,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006695587] [2024-06-27 18:36:21,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006695587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:21,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:21,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:36:21,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624210771] [2024-06-27 18:36:21,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:21,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:36:21,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:21,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:36:21,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:36:21,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:36:21,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 770 transitions, 13901 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:21,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:21,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:36:21,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:25,071 INFO L124 PetriNetUnfolderBase]: 4700/9762 cut-off events. [2024-06-27 18:36:25,071 INFO L125 PetriNetUnfolderBase]: For 457718/457718 co-relation queries the response was YES. [2024-06-27 18:36:25,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62131 conditions, 9762 events. 4700/9762 cut-off events. For 457718/457718 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 87894 event pairs, 1742 based on Foata normal form. 2/9038 useless extension candidates. Maximal degree in co-relation 61893. Up to 7952 conditions per place. [2024-06-27 18:36:25,205 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 726 selfloop transitions, 69 changer transitions 0/803 dead transitions. [2024-06-27 18:36:25,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 803 transitions, 15828 flow [2024-06-27 18:36:25,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:36:25,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:36:25,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-27 18:36:25,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43783783783783786 [2024-06-27 18:36:25,206 INFO L175 Difference]: Start difference. First operand has 540 places, 770 transitions, 13901 flow. Second operand 10 states and 162 transitions. [2024-06-27 18:36:25,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 803 transitions, 15828 flow [2024-06-27 18:36:29,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 803 transitions, 15476 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-27 18:36:29,234 INFO L231 Difference]: Finished difference. Result has 541 places, 772 transitions, 13763 flow [2024-06-27 18:36:29,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13553, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=701, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13763, PETRI_PLACES=541, PETRI_TRANSITIONS=772} [2024-06-27 18:36:29,234 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 500 predicate places. [2024-06-27 18:36:29,234 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 772 transitions, 13763 flow [2024-06-27 18:36:29,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:29,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:29,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:29,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 18:36:29,235 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:36:29,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:29,235 INFO L85 PathProgramCache]: Analyzing trace with hash -650483437, now seen corresponding path program 20 times [2024-06-27 18:36:29,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:29,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891817232] [2024-06-27 18:36:29,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:29,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:30,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:30,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:30,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891817232] [2024-06-27 18:36:30,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891817232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:30,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:30,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:36:30,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113583341] [2024-06-27 18:36:30,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:30,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:36:30,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:30,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:36:30,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:36:30,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:36:30,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 772 transitions, 13763 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:30,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:30,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:36:30,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:33,277 INFO L124 PetriNetUnfolderBase]: 4592/9510 cut-off events. [2024-06-27 18:36:33,278 INFO L125 PetriNetUnfolderBase]: For 349592/349595 co-relation queries the response was YES. [2024-06-27 18:36:33,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59073 conditions, 9510 events. 4592/9510 cut-off events. For 349592/349595 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 85074 event pairs, 1505 based on Foata normal form. 5/8799 useless extension candidates. Maximal degree in co-relation 58833. Up to 7332 conditions per place. [2024-06-27 18:36:33,443 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 582 selfloop transitions, 218 changer transitions 0/808 dead transitions. [2024-06-27 18:36:33,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 808 transitions, 15823 flow [2024-06-27 18:36:33,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:36:33,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:36:33,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-27 18:36:33,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2024-06-27 18:36:33,444 INFO L175 Difference]: Start difference. First operand has 541 places, 772 transitions, 13763 flow. Second operand 11 states and 178 transitions. [2024-06-27 18:36:33,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 808 transitions, 15823 flow [2024-06-27 18:36:37,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 808 transitions, 15506 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-06-27 18:36:37,357 INFO L231 Difference]: Finished difference. Result has 542 places, 772 transitions, 13892 flow [2024-06-27 18:36:37,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13446, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=772, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=218, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=554, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13892, PETRI_PLACES=542, PETRI_TRANSITIONS=772} [2024-06-27 18:36:37,357 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 501 predicate places. [2024-06-27 18:36:37,357 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 772 transitions, 13892 flow [2024-06-27 18:36:37,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:37,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:37,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:37,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 18:36:37,358 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:36:37,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:37,358 INFO L85 PathProgramCache]: Analyzing trace with hash 885019965, now seen corresponding path program 21 times [2024-06-27 18:36:37,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:37,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585504362] [2024-06-27 18:36:37,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:37,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:38,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:38,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:38,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585504362] [2024-06-27 18:36:38,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585504362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:38,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:38,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:36:38,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991344700] [2024-06-27 18:36:38,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:38,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:36:38,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:38,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:36:38,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:36:38,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:36:38,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 772 transitions, 13892 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:38,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:38,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:36:38,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:41,153 INFO L124 PetriNetUnfolderBase]: 4622/9562 cut-off events. [2024-06-27 18:36:41,154 INFO L125 PetriNetUnfolderBase]: For 371388/371388 co-relation queries the response was YES. [2024-06-27 18:36:41,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60105 conditions, 9562 events. 4622/9562 cut-off events. For 371388/371388 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 85586 event pairs, 2012 based on Foata normal form. 2/8843 useless extension candidates. Maximal degree in co-relation 59865. Up to 7784 conditions per place. [2024-06-27 18:36:41,323 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 722 selfloop transitions, 76 changer transitions 0/806 dead transitions. [2024-06-27 18:36:41,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 806 transitions, 16242 flow [2024-06-27 18:36:41,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:36:41,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:36:41,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-27 18:36:41,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4275184275184275 [2024-06-27 18:36:41,324 INFO L175 Difference]: Start difference. First operand has 542 places, 772 transitions, 13892 flow. Second operand 11 states and 174 transitions. [2024-06-27 18:36:41,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 806 transitions, 16242 flow [2024-06-27 18:36:45,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 806 transitions, 15773 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-27 18:36:45,019 INFO L231 Difference]: Finished difference. Result has 542 places, 776 transitions, 13763 flow [2024-06-27 18:36:45,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13425, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=772, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=696, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13763, PETRI_PLACES=542, PETRI_TRANSITIONS=776} [2024-06-27 18:36:45,020 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 501 predicate places. [2024-06-27 18:36:45,020 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 776 transitions, 13763 flow [2024-06-27 18:36:45,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:45,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:45,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:45,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 18:36:45,020 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:36:45,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:45,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1093529819, now seen corresponding path program 32 times [2024-06-27 18:36:45,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:45,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931584600] [2024-06-27 18:36:45,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:45,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:45,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:45,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:45,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:45,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931584600] [2024-06-27 18:36:45,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931584600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:45,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:45,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:36:45,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463037966] [2024-06-27 18:36:45,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:45,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:36:45,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:45,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:36:45,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:36:45,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:36:45,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 776 transitions, 13763 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:45,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:45,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:36:45,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:48,969 INFO L124 PetriNetUnfolderBase]: 4639/9604 cut-off events. [2024-06-27 18:36:48,969 INFO L125 PetriNetUnfolderBase]: For 374856/374856 co-relation queries the response was YES. [2024-06-27 18:36:49,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60120 conditions, 9604 events. 4639/9604 cut-off events. For 374856/374856 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 86004 event pairs, 2036 based on Foata normal form. 2/8884 useless extension candidates. Maximal degree in co-relation 59880. Up to 7957 conditions per place. [2024-06-27 18:36:49,130 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 754 selfloop transitions, 39 changer transitions 0/801 dead transitions. [2024-06-27 18:36:49,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 801 transitions, 15651 flow [2024-06-27 18:36:49,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:36:49,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:36:49,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 165 transitions. [2024-06-27 18:36:49,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40540540540540543 [2024-06-27 18:36:49,131 INFO L175 Difference]: Start difference. First operand has 542 places, 776 transitions, 13763 flow. Second operand 11 states and 165 transitions. [2024-06-27 18:36:49,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 801 transitions, 15651 flow [2024-06-27 18:36:52,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 801 transitions, 15419 flow, removed 46 selfloop flow, removed 8 redundant places. [2024-06-27 18:36:52,650 INFO L231 Difference]: Finished difference. Result has 545 places, 777 transitions, 13665 flow [2024-06-27 18:36:52,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13531, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=776, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=737, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13665, PETRI_PLACES=545, PETRI_TRANSITIONS=777} [2024-06-27 18:36:52,651 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 504 predicate places. [2024-06-27 18:36:52,651 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 777 transitions, 13665 flow [2024-06-27 18:36:52,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:52,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:52,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:52,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 18:36:52,652 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:36:52,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:52,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1912007153, now seen corresponding path program 3 times [2024-06-27 18:36:52,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:52,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075141224] [2024-06-27 18:36:52,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:52,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:52,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:53,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:53,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:53,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075141224] [2024-06-27 18:36:53,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075141224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:53,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:53,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:36:53,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492520798] [2024-06-27 18:36:53,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:53,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:36:53,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:53,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:36:53,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:36:53,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:36:53,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 777 transitions, 13665 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:53,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:53,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:36:53,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:56,749 INFO L124 PetriNetUnfolderBase]: 4656/9638 cut-off events. [2024-06-27 18:36:56,750 INFO L125 PetriNetUnfolderBase]: For 375859/375859 co-relation queries the response was YES. [2024-06-27 18:36:56,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59928 conditions, 9638 events. 4656/9638 cut-off events. For 375859/375859 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 86344 event pairs, 2023 based on Foata normal form. 2/8915 useless extension candidates. Maximal degree in co-relation 59687. Up to 7942 conditions per place. [2024-06-27 18:36:56,906 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 751 selfloop transitions, 46 changer transitions 0/805 dead transitions. [2024-06-27 18:36:56,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 805 transitions, 15538 flow [2024-06-27 18:36:56,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:36:56,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:36:56,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-27 18:36:56,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4243243243243243 [2024-06-27 18:36:56,907 INFO L175 Difference]: Start difference. First operand has 545 places, 777 transitions, 13665 flow. Second operand 10 states and 157 transitions. [2024-06-27 18:36:56,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 805 transitions, 15538 flow [2024-06-27 18:37:00,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 805 transitions, 15420 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 18:37:00,387 INFO L231 Difference]: Finished difference. Result has 547 places, 780 transitions, 13695 flow [2024-06-27 18:37:00,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13547, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=777, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=731, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13695, PETRI_PLACES=547, PETRI_TRANSITIONS=780} [2024-06-27 18:37:00,387 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 506 predicate places. [2024-06-27 18:37:00,387 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 780 transitions, 13695 flow [2024-06-27 18:37:00,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:00,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:00,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:00,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 18:37:00,388 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:37:00,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:00,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1912016081, now seen corresponding path program 22 times [2024-06-27 18:37:00,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:00,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923840555] [2024-06-27 18:37:00,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:00,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:00,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:01,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:01,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:01,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923840555] [2024-06-27 18:37:01,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923840555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:01,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:01,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:37:01,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158857731] [2024-06-27 18:37:01,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:01,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:37:01,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:01,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:37:01,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:37:01,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:37:01,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 780 transitions, 13695 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:01,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:01,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:37:01,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:04,820 INFO L124 PetriNetUnfolderBase]: 4686/9687 cut-off events. [2024-06-27 18:37:04,820 INFO L125 PetriNetUnfolderBase]: For 379187/379187 co-relation queries the response was YES. [2024-06-27 18:37:04,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60305 conditions, 9687 events. 4686/9687 cut-off events. For 379187/379187 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 86756 event pairs, 2019 based on Foata normal form. 2/8960 useless extension candidates. Maximal degree in co-relation 60062. Up to 7803 conditions per place. [2024-06-27 18:37:04,968 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 704 selfloop transitions, 107 changer transitions 0/819 dead transitions. [2024-06-27 18:37:04,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 819 transitions, 15896 flow [2024-06-27 18:37:04,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:37:04,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:37:04,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-06-27 18:37:04,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4250614250614251 [2024-06-27 18:37:04,969 INFO L175 Difference]: Start difference. First operand has 547 places, 780 transitions, 13695 flow. Second operand 11 states and 173 transitions. [2024-06-27 18:37:04,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 819 transitions, 15896 flow [2024-06-27 18:37:08,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 819 transitions, 15762 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 18:37:08,710 INFO L231 Difference]: Finished difference. Result has 550 places, 788 transitions, 13964 flow [2024-06-27 18:37:08,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13561, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=780, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=679, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13964, PETRI_PLACES=550, PETRI_TRANSITIONS=788} [2024-06-27 18:37:08,711 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 509 predicate places. [2024-06-27 18:37:08,711 INFO L495 AbstractCegarLoop]: Abstraction has has 550 places, 788 transitions, 13964 flow [2024-06-27 18:37:08,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:08,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:08,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:08,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-27 18:37:08,711 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:37:08,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:08,712 INFO L85 PathProgramCache]: Analyzing trace with hash -553477897, now seen corresponding path program 4 times [2024-06-27 18:37:08,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:08,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320035388] [2024-06-27 18:37:08,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:08,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:08,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:09,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:09,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:09,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320035388] [2024-06-27 18:37:09,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320035388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:09,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:09,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:37:09,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206775267] [2024-06-27 18:37:09,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:09,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:37:09,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:09,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:37:09,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:37:09,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:37:09,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 788 transitions, 13964 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:09,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:09,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:37:09,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:12,743 INFO L124 PetriNetUnfolderBase]: 4703/9725 cut-off events. [2024-06-27 18:37:12,743 INFO L125 PetriNetUnfolderBase]: For 383778/383778 co-relation queries the response was YES. [2024-06-27 18:37:12,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60596 conditions, 9725 events. 4703/9725 cut-off events. For 383778/383778 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 87180 event pairs, 2046 based on Foata normal form. 2/8994 useless extension candidates. Maximal degree in co-relation 60354. Up to 8077 conditions per place. [2024-06-27 18:37:12,929 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 781 selfloop transitions, 21 changer transitions 0/810 dead transitions. [2024-06-27 18:37:12,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 810 transitions, 15761 flow [2024-06-27 18:37:12,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:37:12,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:37:12,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-06-27 18:37:12,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4081081081081081 [2024-06-27 18:37:12,930 INFO L175 Difference]: Start difference. First operand has 550 places, 788 transitions, 13964 flow. Second operand 10 states and 151 transitions. [2024-06-27 18:37:12,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 559 places, 810 transitions, 15761 flow [2024-06-27 18:37:16,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 810 transitions, 15484 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-27 18:37:16,741 INFO L231 Difference]: Finished difference. Result has 553 places, 789 transitions, 13754 flow [2024-06-27 18:37:16,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13687, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=788, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=767, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13754, PETRI_PLACES=553, PETRI_TRANSITIONS=789} [2024-06-27 18:37:16,742 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 512 predicate places. [2024-06-27 18:37:16,742 INFO L495 AbstractCegarLoop]: Abstraction has has 553 places, 789 transitions, 13754 flow [2024-06-27 18:37:16,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:16,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:16,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:16,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-27 18:37:16,743 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:37:16,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:16,743 INFO L85 PathProgramCache]: Analyzing trace with hash -542368117, now seen corresponding path program 5 times [2024-06-27 18:37:16,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:16,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909331297] [2024-06-27 18:37:16,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:16,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:16,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:17,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:17,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:17,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909331297] [2024-06-27 18:37:17,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909331297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:17,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:17,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:37:17,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859833984] [2024-06-27 18:37:17,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:17,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:37:17,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:17,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:37:17,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:37:17,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:37:17,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 789 transitions, 13754 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:17,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:17,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:37:17,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:20,584 INFO L124 PetriNetUnfolderBase]: 4716/9679 cut-off events. [2024-06-27 18:37:20,584 INFO L125 PetriNetUnfolderBase]: For 386163/386163 co-relation queries the response was YES. [2024-06-27 18:37:20,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60374 conditions, 9679 events. 4716/9679 cut-off events. For 386163/386163 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 86303 event pairs, 2042 based on Foata normal form. 2/8950 useless extension candidates. Maximal degree in co-relation 60131. Up to 8109 conditions per place. [2024-06-27 18:37:20,757 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 786 selfloop transitions, 19 changer transitions 0/813 dead transitions. [2024-06-27 18:37:20,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 813 transitions, 15570 flow [2024-06-27 18:37:20,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:37:20,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:37:20,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-06-27 18:37:20,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41081081081081083 [2024-06-27 18:37:20,758 INFO L175 Difference]: Start difference. First operand has 553 places, 789 transitions, 13754 flow. Second operand 10 states and 152 transitions. [2024-06-27 18:37:20,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 813 transitions, 15570 flow [2024-06-27 18:37:24,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 813 transitions, 15510 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 18:37:24,968 INFO L231 Difference]: Finished difference. Result has 555 places, 793 transitions, 13776 flow [2024-06-27 18:37:24,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13694, PETRI_DIFFERENCE_MINUEND_PLACES=544, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=789, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=771, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13776, PETRI_PLACES=555, PETRI_TRANSITIONS=793} [2024-06-27 18:37:24,969 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 514 predicate places. [2024-06-27 18:37:24,969 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 793 transitions, 13776 flow [2024-06-27 18:37:24,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:24,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:24,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:24,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-27 18:37:24,969 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:37:24,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:24,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1093523123, now seen corresponding path program 23 times [2024-06-27 18:37:24,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:24,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827848092] [2024-06-27 18:37:24,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:24,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:25,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:25,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:25,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827848092] [2024-06-27 18:37:25,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827848092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:25,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:25,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:37:25,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579419471] [2024-06-27 18:37:25,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:25,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:37:25,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:25,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:37:25,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:37:26,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:37:26,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 793 transitions, 13776 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:26,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:26,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:37:26,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:29,353 INFO L124 PetriNetUnfolderBase]: 4712/9749 cut-off events. [2024-06-27 18:37:29,354 INFO L125 PetriNetUnfolderBase]: For 374120/374120 co-relation queries the response was YES. [2024-06-27 18:37:29,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60513 conditions, 9749 events. 4712/9749 cut-off events. For 374120/374120 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 87507 event pairs, 2043 based on Foata normal form. 2/9019 useless extension candidates. Maximal degree in co-relation 60268. Up to 8007 conditions per place. [2024-06-27 18:37:29,490 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 753 selfloop transitions, 58 changer transitions 0/819 dead transitions. [2024-06-27 18:37:29,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 819 transitions, 15693 flow [2024-06-27 18:37:29,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:37:29,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:37:29,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2024-06-27 18:37:29,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41277641277641275 [2024-06-27 18:37:29,491 INFO L175 Difference]: Start difference. First operand has 555 places, 793 transitions, 13776 flow. Second operand 11 states and 168 transitions. [2024-06-27 18:37:29,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 819 transitions, 15693 flow [2024-06-27 18:37:32,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 559 places, 819 transitions, 15610 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-27 18:37:32,999 INFO L231 Difference]: Finished difference. Result has 560 places, 793 transitions, 13816 flow [2024-06-27 18:37:33,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13693, PETRI_DIFFERENCE_MINUEND_PLACES=549, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=793, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=735, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13816, PETRI_PLACES=560, PETRI_TRANSITIONS=793} [2024-06-27 18:37:33,000 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 519 predicate places. [2024-06-27 18:37:33,000 INFO L495 AbstractCegarLoop]: Abstraction has has 560 places, 793 transitions, 13816 flow [2024-06-27 18:37:33,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:33,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:33,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:33,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-27 18:37:33,001 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:37:33,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:33,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1912246721, now seen corresponding path program 24 times [2024-06-27 18:37:33,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:33,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341706063] [2024-06-27 18:37:33,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:33,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:34,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:34,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:34,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341706063] [2024-06-27 18:37:34,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341706063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:34,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:34,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:37:34,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161507510] [2024-06-27 18:37:34,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:34,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:37:34,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:34,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:37:34,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:37:34,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:37:34,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 793 transitions, 13816 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:34,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:34,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:37:34,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:37,149 INFO L124 PetriNetUnfolderBase]: 4725/9762 cut-off events. [2024-06-27 18:37:37,149 INFO L125 PetriNetUnfolderBase]: For 379634/379634 co-relation queries the response was YES. [2024-06-27 18:37:37,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60755 conditions, 9762 events. 4725/9762 cut-off events. For 379634/379634 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 87502 event pairs, 2037 based on Foata normal form. 2/9029 useless extension candidates. Maximal degree in co-relation 60508. Up to 7902 conditions per place. [2024-06-27 18:37:37,328 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 724 selfloop transitions, 96 changer transitions 0/828 dead transitions. [2024-06-27 18:37:37,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 570 places, 828 transitions, 15960 flow [2024-06-27 18:37:37,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:37:37,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:37:37,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-27 18:37:37,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4275184275184275 [2024-06-27 18:37:37,329 INFO L175 Difference]: Start difference. First operand has 560 places, 793 transitions, 13816 flow. Second operand 11 states and 174 transitions. [2024-06-27 18:37:37,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 570 places, 828 transitions, 15960 flow [2024-06-27 18:37:41,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 828 transitions, 15837 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 18:37:41,530 INFO L231 Difference]: Finished difference. Result has 562 places, 795 transitions, 13968 flow [2024-06-27 18:37:41,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13693, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=793, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=697, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13968, PETRI_PLACES=562, PETRI_TRANSITIONS=795} [2024-06-27 18:37:41,531 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 521 predicate places. [2024-06-27 18:37:41,531 INFO L495 AbstractCegarLoop]: Abstraction has has 562 places, 795 transitions, 13968 flow [2024-06-27 18:37:41,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:41,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:41,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:41,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-27 18:37:41,531 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:37:41,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:41,531 INFO L85 PathProgramCache]: Analyzing trace with hash -734525167, now seen corresponding path program 25 times [2024-06-27 18:37:41,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:41,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635963046] [2024-06-27 18:37:41,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:41,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:41,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:42,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:42,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:42,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635963046] [2024-06-27 18:37:42,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635963046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:42,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:42,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:37:42,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835310319] [2024-06-27 18:37:42,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:42,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:37:42,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:42,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:37:42,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:37:42,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:37:42,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 562 places, 795 transitions, 13968 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:42,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:42,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:37:42,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:46,234 INFO L124 PetriNetUnfolderBase]: 4738/9781 cut-off events. [2024-06-27 18:37:46,234 INFO L125 PetriNetUnfolderBase]: For 388234/388234 co-relation queries the response was YES. [2024-06-27 18:37:46,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61282 conditions, 9781 events. 4738/9781 cut-off events. For 388234/388234 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 87625 event pairs, 2046 based on Foata normal form. 2/9044 useless extension candidates. Maximal degree in co-relation 61034. Up to 8120 conditions per place. [2024-06-27 18:37:46,455 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 779 selfloop transitions, 30 changer transitions 0/817 dead transitions. [2024-06-27 18:37:46,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 572 places, 817 transitions, 15863 flow [2024-06-27 18:37:46,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:37:46,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:37:46,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 163 transitions. [2024-06-27 18:37:46,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4004914004914005 [2024-06-27 18:37:46,465 INFO L175 Difference]: Start difference. First operand has 562 places, 795 transitions, 13968 flow. Second operand 11 states and 163 transitions. [2024-06-27 18:37:46,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 572 places, 817 transitions, 15863 flow [2024-06-27 18:37:50,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 817 transitions, 15610 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-27 18:37:50,122 INFO L231 Difference]: Finished difference. Result has 564 places, 797 transitions, 13891 flow [2024-06-27 18:37:50,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13715, PETRI_DIFFERENCE_MINUEND_PLACES=553, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=795, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=765, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13891, PETRI_PLACES=564, PETRI_TRANSITIONS=797} [2024-06-27 18:37:50,122 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 523 predicate places. [2024-06-27 18:37:50,122 INFO L495 AbstractCegarLoop]: Abstraction has has 564 places, 797 transitions, 13891 flow [2024-06-27 18:37:50,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:50,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:50,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:50,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-27 18:37:50,123 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:37:50,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:50,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1047321739, now seen corresponding path program 6 times [2024-06-27 18:37:50,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:50,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601033274] [2024-06-27 18:37:50,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:50,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:51,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:51,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:51,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601033274] [2024-06-27 18:37:51,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601033274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:51,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:51,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:37:51,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977449096] [2024-06-27 18:37:51,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:51,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:37:51,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:51,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:37:51,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:37:51,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:37:51,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 797 transitions, 13891 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:51,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:51,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:37:51,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:54,712 INFO L124 PetriNetUnfolderBase]: 4755/9822 cut-off events. [2024-06-27 18:37:54,713 INFO L125 PetriNetUnfolderBase]: For 390977/390977 co-relation queries the response was YES. [2024-06-27 18:37:54,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61216 conditions, 9822 events. 4755/9822 cut-off events. For 390977/390977 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 88111 event pairs, 2047 based on Foata normal form. 2/9084 useless extension candidates. Maximal degree in co-relation 60967. Up to 8159 conditions per place. [2024-06-27 18:37:54,843 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 788 selfloop transitions, 25 changer transitions 0/821 dead transitions. [2024-06-27 18:37:54,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 821 transitions, 15738 flow [2024-06-27 18:37:54,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:37:54,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:37:54,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-27 18:37:54,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4135135135135135 [2024-06-27 18:37:54,845 INFO L175 Difference]: Start difference. First operand has 564 places, 797 transitions, 13891 flow. Second operand 10 states and 153 transitions. [2024-06-27 18:37:54,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 821 transitions, 15738 flow [2024-06-27 18:37:58,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 821 transitions, 15592 flow, removed 46 selfloop flow, removed 9 redundant places. [2024-06-27 18:37:58,302 INFO L231 Difference]: Finished difference. Result has 565 places, 798 transitions, 13823 flow [2024-06-27 18:37:58,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13745, PETRI_DIFFERENCE_MINUEND_PLACES=555, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=797, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=772, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13823, PETRI_PLACES=565, PETRI_TRANSITIONS=798} [2024-06-27 18:37:58,303 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 524 predicate places. [2024-06-27 18:37:58,303 INFO L495 AbstractCegarLoop]: Abstraction has has 565 places, 798 transitions, 13823 flow [2024-06-27 18:37:58,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:58,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:58,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:58,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-27 18:37:58,303 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:37:58,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:58,303 INFO L85 PathProgramCache]: Analyzing trace with hash -866580625, now seen corresponding path program 26 times [2024-06-27 18:37:58,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:58,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477506426] [2024-06-27 18:37:58,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:58,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:58,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:59,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:59,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:59,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477506426] [2024-06-27 18:37:59,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477506426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:59,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:59,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:37:59,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945706581] [2024-06-27 18:37:59,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:59,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:37:59,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:59,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:37:59,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:37:59,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:37:59,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 565 places, 798 transitions, 13823 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:59,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:59,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:37:59,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:03,016 INFO L124 PetriNetUnfolderBase]: 4785/9872 cut-off events. [2024-06-27 18:38:03,016 INFO L125 PetriNetUnfolderBase]: For 394697/394697 co-relation queries the response was YES. [2024-06-27 18:38:03,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61552 conditions, 9872 events. 4785/9872 cut-off events. For 394697/394697 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 88542 event pairs, 2053 based on Foata normal form. 2/9130 useless extension candidates. Maximal degree in co-relation 61302. Up to 8159 conditions per place. [2024-06-27 18:38:03,164 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 780 selfloop transitions, 43 changer transitions 0/831 dead transitions. [2024-06-27 18:38:03,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 575 places, 831 transitions, 15918 flow [2024-06-27 18:38:03,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:38:03,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:38:03,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-06-27 18:38:03,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4103194103194103 [2024-06-27 18:38:03,165 INFO L175 Difference]: Start difference. First operand has 565 places, 798 transitions, 13823 flow. Second operand 11 states and 167 transitions. [2024-06-27 18:38:03,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 575 places, 831 transitions, 15918 flow [2024-06-27 18:38:06,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 831 transitions, 15825 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 18:38:06,930 INFO L231 Difference]: Finished difference. Result has 567 places, 806 transitions, 14013 flow [2024-06-27 18:38:06,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13730, PETRI_DIFFERENCE_MINUEND_PLACES=556, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=798, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=761, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14013, PETRI_PLACES=567, PETRI_TRANSITIONS=806} [2024-06-27 18:38:06,931 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 526 predicate places. [2024-06-27 18:38:06,931 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 806 transitions, 14013 flow [2024-06-27 18:38:06,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:06,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:06,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:06,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-27 18:38:06,931 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:38:06,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:06,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1093702613, now seen corresponding path program 27 times [2024-06-27 18:38:06,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:06,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972453623] [2024-06-27 18:38:06,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:06,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:07,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:07,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:07,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972453623] [2024-06-27 18:38:07,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972453623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:07,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:07,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:38:07,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960018033] [2024-06-27 18:38:07,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:07,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:38:07,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:07,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:38:07,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:38:07,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:38:07,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 806 transitions, 14013 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:07,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:07,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:38:07,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:11,638 INFO L124 PetriNetUnfolderBase]: 4832/9944 cut-off events. [2024-06-27 18:38:11,639 INFO L125 PetriNetUnfolderBase]: For 445264/445264 co-relation queries the response was YES. [2024-06-27 18:38:11,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63320 conditions, 9944 events. 4832/9944 cut-off events. For 445264/445264 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 89082 event pairs, 2051 based on Foata normal form. 2/9192 useless extension candidates. Maximal degree in co-relation 63070. Up to 8070 conditions per place. [2024-06-27 18:38:11,790 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 755 selfloop transitions, 82 changer transitions 0/845 dead transitions. [2024-06-27 18:38:11,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 845 transitions, 16602 flow [2024-06-27 18:38:11,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:38:11,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:38:11,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 200 transitions. [2024-06-27 18:38:11,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4158004158004158 [2024-06-27 18:38:11,791 INFO L175 Difference]: Start difference. First operand has 567 places, 806 transitions, 14013 flow. Second operand 13 states and 200 transitions. [2024-06-27 18:38:11,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 845 transitions, 16602 flow [2024-06-27 18:38:16,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 845 transitions, 16442 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-27 18:38:16,228 INFO L231 Difference]: Finished difference. Result has 574 places, 812 transitions, 14354 flow [2024-06-27 18:38:16,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13853, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=806, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=726, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=14354, PETRI_PLACES=574, PETRI_TRANSITIONS=812} [2024-06-27 18:38:16,228 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 533 predicate places. [2024-06-27 18:38:16,228 INFO L495 AbstractCegarLoop]: Abstraction has has 574 places, 812 transitions, 14354 flow [2024-06-27 18:38:16,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:16,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:16,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:16,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-27 18:38:16,229 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:38:16,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:16,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1912253417, now seen corresponding path program 33 times [2024-06-27 18:38:16,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:16,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650700045] [2024-06-27 18:38:16,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:16,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:16,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:17,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:17,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:17,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650700045] [2024-06-27 18:38:17,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650700045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:17,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:17,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:38:17,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463943972] [2024-06-27 18:38:17,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:17,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:38:17,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:17,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:38:17,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:38:17,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:38:17,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 812 transitions, 14354 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:17,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:17,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:38:17,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:20,579 INFO L124 PetriNetUnfolderBase]: 4849/9978 cut-off events. [2024-06-27 18:38:20,579 INFO L125 PetriNetUnfolderBase]: For 453978/453978 co-relation queries the response was YES. [2024-06-27 18:38:20,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63870 conditions, 9978 events. 4849/9978 cut-off events. For 453978/453978 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 89471 event pairs, 2071 based on Foata normal form. 2/9224 useless extension candidates. Maximal degree in co-relation 63618. Up to 8244 conditions per place. [2024-06-27 18:38:20,719 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 772 selfloop transitions, 60 changer transitions 0/840 dead transitions. [2024-06-27 18:38:20,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 840 transitions, 16396 flow [2024-06-27 18:38:20,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:38:20,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:38:20,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-06-27 18:38:20,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152334152334152 [2024-06-27 18:38:20,720 INFO L175 Difference]: Start difference. First operand has 574 places, 812 transitions, 14354 flow. Second operand 11 states and 169 transitions. [2024-06-27 18:38:20,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 584 places, 840 transitions, 16396 flow [2024-06-27 18:38:25,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 840 transitions, 16187 flow, removed 58 selfloop flow, removed 9 redundant places. [2024-06-27 18:38:25,041 INFO L231 Difference]: Finished difference. Result has 576 places, 813 transitions, 14323 flow [2024-06-27 18:38:25,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14145, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=812, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=752, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14323, PETRI_PLACES=576, PETRI_TRANSITIONS=813} [2024-06-27 18:38:25,041 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 535 predicate places. [2024-06-27 18:38:25,041 INFO L495 AbstractCegarLoop]: Abstraction has has 576 places, 813 transitions, 14323 flow [2024-06-27 18:38:25,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:25,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:25,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:25,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-27 18:38:25,042 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:38:25,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:25,042 INFO L85 PathProgramCache]: Analyzing trace with hash -866817775, now seen corresponding path program 28 times [2024-06-27 18:38:25,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:25,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634518825] [2024-06-27 18:38:25,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:25,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat