./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.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/mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/protection/mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:39:31,441 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:39:31,507 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:39:31,511 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:39:31,512 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:39:31,533 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:39:31,534 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:39:31,534 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:39:31,534 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:39:31,537 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:39:31,537 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:39:31,538 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:39:31,538 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:39:31,539 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:39:31,539 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:39:31,539 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:39:31,540 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:39:31,540 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:39:31,540 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:39:31,540 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:39:31,541 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:39:31,541 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:39:31,542 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:39:31,542 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:39:31,542 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:39:31,542 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:39:31,542 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:39:31,543 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:39:31,543 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:39:31,543 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:39:31,544 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:39:31,544 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:39:31,544 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:39:31,545 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:39:31,545 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:39:31,545 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:39:31,545 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:39:31,545 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:39:31,546 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:39:31,546 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:39:31,546 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:39:31,546 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:39:31,546 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:39:31,546 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:39:31,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:39:31,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:39:31,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:39:31,780 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:39:31,781 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:39:31,781 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-27 18:39:32,787 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:39:32,977 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:39:32,978 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-27 18:39:32,991 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/727e3b40d/a87788f4c2b64aa7bb1167af2ade7681/FLAG7d366e603 [2024-06-27 18:39:33,001 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/727e3b40d/a87788f4c2b64aa7bb1167af2ade7681 [2024-06-27 18:39:33,003 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:39:33,004 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:39:33,004 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-27 18:39:33,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:39:33,146 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:39:33,147 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:39:33,147 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:39:33,150 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:39:33,151 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:39:33" (1/2) ... [2024-06-27 18:39:33,152 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25eeebab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:39:33, skipping insertion in model container [2024-06-27 18:39:33,152 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:39:33" (1/2) ... [2024-06-27 18:39:33,153 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@bcd8ee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:39:33, skipping insertion in model container [2024-06-27 18:39:33,154 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:39:33" (2/2) ... [2024-06-27 18:39:33,154 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25eeebab and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:39:33, skipping insertion in model container [2024-06-27 18:39:33,154 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:39:33" (2/2) ... [2024-06-27 18:39:33,154 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:39:33,265 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:39:33,266 INFO L97 edCorrectnessWitness]: Location invariant before [L818-L818] ((((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2)) [2024-06-27 18:39:33,266 INFO L97 edCorrectnessWitness]: Location invariant before [L819-L819] ((((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2)) [2024-06-27 18:39:33,266 INFO L97 edCorrectnessWitness]: Location invariant before [L816-L816] ((((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2)) [2024-06-27 18:39:33,266 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:39:33,266 INFO L106 edCorrectnessWitness]: ghost_update [L814-L814] multithreaded = 1; [2024-06-27 18:39:33,303 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:39:33,454 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/mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2024-06-27 18:39:33,604 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:39:33,615 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:39:33,642 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/mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:39:33,710 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:39:33,738 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:39:33,738 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:39:33 WrapperNode [2024-06-27 18:39:33,738 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:39:33,739 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:39:33,739 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:39:33,739 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:39:33,745 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 06:39:33" (1/1) ... [2024-06-27 18:39:33,756 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 06:39:33" (1/1) ... [2024-06-27 18:39:33,794 INFO L138 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 139 [2024-06-27 18:39:33,794 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:39:33,795 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:39:33,795 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:39:33,795 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:39:33,804 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 06:39:33" (1/1) ... [2024-06-27 18:39:33,804 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 06:39:33" (1/1) ... [2024-06-27 18:39:33,807 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 06:39:33" (1/1) ... [2024-06-27 18:39:33,822 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 18:39:33,822 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 06:39:33" (1/1) ... [2024-06-27 18:39:33,822 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 06:39:33" (1/1) ... [2024-06-27 18:39:33,829 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 06:39:33" (1/1) ... [2024-06-27 18:39:33,831 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 06:39:33" (1/1) ... [2024-06-27 18:39:33,840 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 06:39:33" (1/1) ... [2024-06-27 18:39:33,845 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 06:39:33" (1/1) ... [2024-06-27 18:39:33,847 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:39:33,848 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:39:33,848 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:39:33,848 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:39:33,849 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 06:39:33" (1/1) ... [2024-06-27 18:39:33,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:39:33,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:39:33,875 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 18:39:33,884 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 18:39:33,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:39:33,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:39:33,919 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:39:33,919 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:39:33,920 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:39:33,920 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:39:33,920 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:39:33,920 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:39:33,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:39:33,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:39:33,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:39:33,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:39:33,923 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 18:39:34,037 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:39:34,040 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:39:34,272 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:39:34,272 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:39:34,458 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:39:34,459 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:39:34,459 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:39:34 BoogieIcfgContainer [2024-06-27 18:39:34,459 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:39:34,461 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:39:34,462 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:39:34,464 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:39:34,464 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:39:33" (1/4) ... [2024-06-27 18:39:34,465 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@632c2de1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:39:34, skipping insertion in model container [2024-06-27 18:39:34,465 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:39:33" (2/4) ... [2024-06-27 18:39:34,466 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@632c2de1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:39:34, skipping insertion in model container [2024-06-27 18:39:34,466 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 06:39:33" (3/4) ... [2024-06-27 18:39:34,467 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@632c2de1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:39:34, skipping insertion in model container [2024-06-27 18:39:34,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:39:34" (4/4) ... [2024-06-27 18:39:34,469 INFO L112 eAbstractionObserver]: Analyzing ICFG mix056_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-27 18:39:34,485 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:39:34,485 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 18:39:34,486 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:39:34,521 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:39:34,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 46 transitions, 104 flow [2024-06-27 18:39:34,585 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2024-06-27 18:39:34,586 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:39:34,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 1/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-06-27 18:39:34,589 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 46 transitions, 104 flow [2024-06-27 18:39:34,593 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 43 transitions, 95 flow [2024-06-27 18:39:34,604 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:39:34,610 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;@4fb117d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:39:34,611 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 18:39:34,615 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:39:34,615 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:39:34,615 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:39:34,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:34,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:39:34,617 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:34,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:34,624 INFO L85 PathProgramCache]: Analyzing trace with hash 346047312, now seen corresponding path program 1 times [2024-06-27 18:39:34,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:34,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597105488] [2024-06-27 18:39:34,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:34,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:34,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:35,237 INFO 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 18:39:35,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:35,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597105488] [2024-06-27 18:39:35,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597105488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:35,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:35,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:39:35,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280003131] [2024-06-27 18:39:35,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:35,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:39:35,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:35,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:39:35,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:39:35,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-27 18:39:35,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:35,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:35,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-27 18:39:35,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:35,878 INFO L124 PetriNetUnfolderBase]: 3578/5353 cut-off events. [2024-06-27 18:39:35,879 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-06-27 18:39:35,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10586 conditions, 5353 events. 3578/5353 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 30307 event pairs, 2065 based on Foata normal form. 181/5254 useless extension candidates. Maximal degree in co-relation 10574. Up to 5143 conditions per place. [2024-06-27 18:39:35,910 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 42 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-27 18:39:35,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 58 transitions, 225 flow [2024-06-27 18:39:35,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:39:35,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:39:35,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-06-27 18:39:35,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6811594202898551 [2024-06-27 18:39:35,921 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 95 flow. Second operand 3 states and 94 transitions. [2024-06-27 18:39:35,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 58 transitions, 225 flow [2024-06-27 18:39:35,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 220 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:39:35,929 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 127 flow [2024-06-27 18:39:35,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2024-06-27 18:39:35,933 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-06-27 18:39:35,933 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 127 flow [2024-06-27 18:39:35,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:35,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:35,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:35,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:39:35,934 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:35,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:35,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1839033199, now seen corresponding path program 1 times [2024-06-27 18:39:35,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:35,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444422013] [2024-06-27 18:39:35,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:35,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:35,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:36,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:36,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:36,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444422013] [2024-06-27 18:39:36,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444422013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:36,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:36,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:39:36,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39924883] [2024-06-27 18:39:36,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:36,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:39:36,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:36,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:39:36,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:39:36,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:39:36,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 127 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 18:39:36,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:36,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:39:36,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:36,989 INFO L124 PetriNetUnfolderBase]: 4173/6136 cut-off events. [2024-06-27 18:39:36,989 INFO L125 PetriNetUnfolderBase]: For 870/870 co-relation queries the response was YES. [2024-06-27 18:39:36,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13610 conditions, 6136 events. 4173/6136 cut-off events. For 870/870 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 34610 event pairs, 2218 based on Foata normal form. 3/5853 useless extension candidates. Maximal degree in co-relation 13598. Up to 5950 conditions per place. [2024-06-27 18:39:37,018 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 55 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2024-06-27 18:39:37,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 74 transitions, 325 flow [2024-06-27 18:39:37,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:39:37,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:39:37,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-06-27 18:39:37,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6467391304347826 [2024-06-27 18:39:37,020 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 127 flow. Second operand 4 states and 119 transitions. [2024-06-27 18:39:37,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 74 transitions, 325 flow [2024-06-27 18:39:37,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 74 transitions, 320 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:39:37,023 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 173 flow [2024-06-27 18:39:37,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=173, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2024-06-27 18:39:37,024 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2024-06-27 18:39:37,024 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 173 flow [2024-06-27 18:39:37,024 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 18:39:37,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:37,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:37,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:39:37,025 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:37,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:37,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1175455887, now seen corresponding path program 1 times [2024-06-27 18:39:37,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:37,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710104861] [2024-06-27 18:39:37,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:37,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:37,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:37,474 INFO 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 18:39:37,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:37,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710104861] [2024-06-27 18:39:37,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710104861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:37,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:37,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:39:37,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330811522] [2024-06-27 18:39:37,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:37,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:39:37,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:37,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:39:37,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:39:37,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:39:37,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 173 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:37,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:37,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:39:37,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:38,050 INFO L124 PetriNetUnfolderBase]: 4203/6067 cut-off events. [2024-06-27 18:39:38,050 INFO L125 PetriNetUnfolderBase]: For 2243/2243 co-relation queries the response was YES. [2024-06-27 18:39:38,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14987 conditions, 6067 events. 4203/6067 cut-off events. For 2243/2243 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 33549 event pairs, 1444 based on Foata normal form. 5/5817 useless extension candidates. Maximal degree in co-relation 14973. Up to 5868 conditions per place. [2024-06-27 18:39:38,086 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 73 selfloop transitions, 21 changer transitions 0/104 dead transitions. [2024-06-27 18:39:38,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 104 transitions, 529 flow [2024-06-27 18:39:38,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:39:38,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:39:38,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2024-06-27 18:39:38,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6782608695652174 [2024-06-27 18:39:38,091 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 173 flow. Second operand 5 states and 156 transitions. [2024-06-27 18:39:38,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 104 transitions, 529 flow [2024-06-27 18:39:38,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 104 transitions, 510 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 18:39:38,096 INFO L231 Difference]: Finished difference. Result has 60 places, 64 transitions, 302 flow [2024-06-27 18:39:38,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=302, PETRI_PLACES=60, PETRI_TRANSITIONS=64} [2024-06-27 18:39:38,097 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 8 predicate places. [2024-06-27 18:39:38,097 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 64 transitions, 302 flow [2024-06-27 18:39:38,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:38,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:38,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:38,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:39:38,098 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:38,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:38,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1753914108, now seen corresponding path program 1 times [2024-06-27 18:39:38,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:38,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074627123] [2024-06-27 18:39:38,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:38,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:38,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:38,624 INFO 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 18:39:38,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:38,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074627123] [2024-06-27 18:39:38,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074627123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:38,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:38,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:39:38,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346959951] [2024-06-27 18:39:38,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:38,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:39:38,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:38,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:39:38,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:39:38,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:39:38,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 64 transitions, 302 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:38,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:38,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:39:38,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:39,284 INFO L124 PetriNetUnfolderBase]: 4254/6742 cut-off events. [2024-06-27 18:39:39,284 INFO L125 PetriNetUnfolderBase]: For 6327/6330 co-relation queries the response was YES. [2024-06-27 18:39:39,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18389 conditions, 6742 events. 4254/6742 cut-off events. For 6327/6330 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 41977 event pairs, 1894 based on Foata normal form. 12/6283 useless extension candidates. Maximal degree in co-relation 18372. Up to 5845 conditions per place. [2024-06-27 18:39:39,313 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 82 selfloop transitions, 25 changer transitions 0/117 dead transitions. [2024-06-27 18:39:39,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 117 transitions, 674 flow [2024-06-27 18:39:39,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:39:39,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:39:39,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2024-06-27 18:39:39,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6594202898550725 [2024-06-27 18:39:39,315 INFO L175 Difference]: Start difference. First operand has 60 places, 64 transitions, 302 flow. Second operand 6 states and 182 transitions. [2024-06-27 18:39:39,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 117 transitions, 674 flow [2024-06-27 18:39:39,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 117 transitions, 662 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-27 18:39:39,319 INFO L231 Difference]: Finished difference. Result has 65 places, 67 transitions, 377 flow [2024-06-27 18:39:39,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=377, PETRI_PLACES=65, PETRI_TRANSITIONS=67} [2024-06-27 18:39:39,320 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 13 predicate places. [2024-06-27 18:39:39,320 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 67 transitions, 377 flow [2024-06-27 18:39:39,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:39,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:39,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:39,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:39:39,321 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:39,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:39,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1033479327, now seen corresponding path program 1 times [2024-06-27 18:39:39,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:39,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87714009] [2024-06-27 18:39:39,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:39,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:39,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:39,691 INFO 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 18:39:39,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:39,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87714009] [2024-06-27 18:39:39,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87714009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:39,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:39,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:39:39,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168826716] [2024-06-27 18:39:39,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:39,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:39:39,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:39,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:39:39,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:39:39,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:39:39,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 67 transitions, 377 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:39,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:39,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:39:39,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:40,417 INFO L124 PetriNetUnfolderBase]: 4101/6097 cut-off events. [2024-06-27 18:39:40,418 INFO L125 PetriNetUnfolderBase]: For 7806/7806 co-relation queries the response was YES. [2024-06-27 18:39:40,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19026 conditions, 6097 events. 4101/6097 cut-off events. For 7806/7806 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 34512 event pairs, 1276 based on Foata normal form. 2/5804 useless extension candidates. Maximal degree in co-relation 19005. Up to 5849 conditions per place. [2024-06-27 18:39:40,450 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 71 selfloop transitions, 10 changer transitions 0/90 dead transitions. [2024-06-27 18:39:40,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 90 transitions, 591 flow [2024-06-27 18:39:40,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:39:40,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:39:40,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-06-27 18:39:40,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2024-06-27 18:39:40,452 INFO L175 Difference]: Start difference. First operand has 65 places, 67 transitions, 377 flow. Second operand 5 states and 125 transitions. [2024-06-27 18:39:40,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 90 transitions, 591 flow [2024-06-27 18:39:40,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 90 transitions, 522 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 18:39:40,461 INFO L231 Difference]: Finished difference. Result has 66 places, 67 transitions, 337 flow [2024-06-27 18:39:40,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=337, PETRI_PLACES=66, PETRI_TRANSITIONS=67} [2024-06-27 18:39:40,462 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 14 predicate places. [2024-06-27 18:39:40,462 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 67 transitions, 337 flow [2024-06-27 18:39:40,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:40,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:40,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:40,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:39:40,463 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:40,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:40,463 INFO L85 PathProgramCache]: Analyzing trace with hash -2010940673, now seen corresponding path program 1 times [2024-06-27 18:39:40,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:40,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487305495] [2024-06-27 18:39:40,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:40,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:40,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:40,924 INFO 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 18:39:40,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:40,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487305495] [2024-06-27 18:39:40,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487305495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:40,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:40,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:39:40,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687602320] [2024-06-27 18:39:40,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:40,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:39:40,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:40,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:39:40,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:39:40,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:39:40,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 67 transitions, 337 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:40,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:40,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:39:40,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:41,720 INFO L124 PetriNetUnfolderBase]: 4089/6615 cut-off events. [2024-06-27 18:39:41,720 INFO L125 PetriNetUnfolderBase]: For 8882/8882 co-relation queries the response was YES. [2024-06-27 18:39:41,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19129 conditions, 6615 events. 4089/6615 cut-off events. For 8882/8882 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 41670 event pairs, 1685 based on Foata normal form. 4/6144 useless extension candidates. Maximal degree in co-relation 19106. Up to 5812 conditions per place. [2024-06-27 18:39:41,755 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 81 selfloop transitions, 17 changer transitions 0/107 dead transitions. [2024-06-27 18:39:41,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 107 transitions, 701 flow [2024-06-27 18:39:41,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:39:41,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:39:41,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-27 18:39:41,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5289855072463768 [2024-06-27 18:39:41,757 INFO L175 Difference]: Start difference. First operand has 66 places, 67 transitions, 337 flow. Second operand 6 states and 146 transitions. [2024-06-27 18:39:41,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 107 transitions, 701 flow [2024-06-27 18:39:41,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 107 transitions, 648 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 18:39:41,764 INFO L231 Difference]: Finished difference. Result has 70 places, 82 transitions, 476 flow [2024-06-27 18:39:41,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=476, PETRI_PLACES=70, PETRI_TRANSITIONS=82} [2024-06-27 18:39:41,767 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 18 predicate places. [2024-06-27 18:39:41,767 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 82 transitions, 476 flow [2024-06-27 18:39:41,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:41,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:41,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:41,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:39:41,768 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:41,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:41,768 INFO L85 PathProgramCache]: Analyzing trace with hash -2011668954, now seen corresponding path program 1 times [2024-06-27 18:39:41,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:41,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746289607] [2024-06-27 18:39:41,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:41,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:41,858 INFO 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 18:39:41,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:41,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746289607] [2024-06-27 18:39:41,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746289607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:41,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:41,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:39:41,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193728350] [2024-06-27 18:39:41,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:41,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:39:41,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:41,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:39:41,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:39:41,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 46 [2024-06-27 18:39:41,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 82 transitions, 476 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:41,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:41,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 46 [2024-06-27 18:39:41,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:42,077 INFO L124 PetriNetUnfolderBase]: 1281/2565 cut-off events. [2024-06-27 18:39:42,077 INFO L125 PetriNetUnfolderBase]: For 4467/4756 co-relation queries the response was YES. [2024-06-27 18:39:42,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6652 conditions, 2565 events. 1281/2565 cut-off events. For 4467/4756 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 19233 event pairs, 277 based on Foata normal form. 16/2381 useless extension candidates. Maximal degree in co-relation 6628. Up to 1466 conditions per place. [2024-06-27 18:39:42,097 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 30 selfloop transitions, 11 changer transitions 0/81 dead transitions. [2024-06-27 18:39:42,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 81 transitions, 494 flow [2024-06-27 18:39:42,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:39:42,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:39:42,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-06-27 18:39:42,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7391304347826086 [2024-06-27 18:39:42,099 INFO L175 Difference]: Start difference. First operand has 70 places, 82 transitions, 476 flow. Second operand 3 states and 102 transitions. [2024-06-27 18:39:42,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 81 transitions, 494 flow [2024-06-27 18:39:42,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 81 transitions, 480 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-27 18:39:42,103 INFO L231 Difference]: Finished difference. Result has 70 places, 72 transitions, 400 flow [2024-06-27 18:39:42,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=400, PETRI_PLACES=70, PETRI_TRANSITIONS=72} [2024-06-27 18:39:42,104 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 18 predicate places. [2024-06-27 18:39:42,104 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 72 transitions, 400 flow [2024-06-27 18:39:42,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:42,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:42,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:42,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:39:42,105 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:42,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:42,105 INFO L85 PathProgramCache]: Analyzing trace with hash -992556416, now seen corresponding path program 1 times [2024-06-27 18:39:42,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:42,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566837864] [2024-06-27 18:39:42,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:42,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:42,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:42,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:42,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566837864] [2024-06-27 18:39:42,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566837864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:42,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:42,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:39:42,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480412246] [2024-06-27 18:39:42,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:42,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:39:42,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:42,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:39:42,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:39:42,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:39:42,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 72 transitions, 400 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:42,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:42,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:39:42,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:43,241 INFO L124 PetriNetUnfolderBase]: 4275/6312 cut-off events. [2024-06-27 18:39:43,242 INFO L125 PetriNetUnfolderBase]: For 13826/13832 co-relation queries the response was YES. [2024-06-27 18:39:43,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20188 conditions, 6312 events. 4275/6312 cut-off events. For 13826/13832 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 35161 event pairs, 1323 based on Foata normal form. 10/6274 useless extension candidates. Maximal degree in co-relation 20162. Up to 5838 conditions per place. [2024-06-27 18:39:43,274 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 88 selfloop transitions, 35 changer transitions 5/136 dead transitions. [2024-06-27 18:39:43,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 136 transitions, 914 flow [2024-06-27 18:39:43,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:39:43,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:39:43,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-27 18:39:43,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5559006211180124 [2024-06-27 18:39:43,277 INFO L175 Difference]: Start difference. First operand has 70 places, 72 transitions, 400 flow. Second operand 7 states and 179 transitions. [2024-06-27 18:39:43,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 136 transitions, 914 flow [2024-06-27 18:39:43,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 136 transitions, 884 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:39:43,288 INFO L231 Difference]: Finished difference. Result has 77 places, 87 transitions, 581 flow [2024-06-27 18:39:43,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=581, PETRI_PLACES=77, PETRI_TRANSITIONS=87} [2024-06-27 18:39:43,290 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 25 predicate places. [2024-06-27 18:39:43,290 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 87 transitions, 581 flow [2024-06-27 18:39:43,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:43,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:43,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:43,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:39:43,291 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:43,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:43,291 INFO L85 PathProgramCache]: Analyzing trace with hash 2079627934, now seen corresponding path program 2 times [2024-06-27 18:39:43,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:43,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97492815] [2024-06-27 18:39:43,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:43,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:43,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:43,738 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 18:39:43,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:43,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97492815] [2024-06-27 18:39:43,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97492815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:43,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:43,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:39:43,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910122412] [2024-06-27 18:39:43,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:43,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:39:43,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:43,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:39:43,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:39:43,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:39:43,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 87 transitions, 581 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:43,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:43,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:39:43,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:44,473 INFO L124 PetriNetUnfolderBase]: 3842/5706 cut-off events. [2024-06-27 18:39:44,473 INFO L125 PetriNetUnfolderBase]: For 13995/14003 co-relation queries the response was YES. [2024-06-27 18:39:44,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19284 conditions, 5706 events. 3842/5706 cut-off events. For 13995/14003 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 31562 event pairs, 1189 based on Foata normal form. 12/5670 useless extension candidates. Maximal degree in co-relation 19254. Up to 5225 conditions per place. [2024-06-27 18:39:44,500 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 80 selfloop transitions, 39 changer transitions 0/127 dead transitions. [2024-06-27 18:39:44,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 127 transitions, 1003 flow [2024-06-27 18:39:44,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:39:44,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:39:44,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-27 18:39:44,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532608695652174 [2024-06-27 18:39:44,501 INFO L175 Difference]: Start difference. First operand has 77 places, 87 transitions, 581 flow. Second operand 6 states and 147 transitions. [2024-06-27 18:39:44,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 127 transitions, 1003 flow [2024-06-27 18:39:44,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 127 transitions, 956 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-27 18:39:44,513 INFO L231 Difference]: Finished difference. Result has 79 places, 92 transitions, 683 flow [2024-06-27 18:39:44,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=683, PETRI_PLACES=79, PETRI_TRANSITIONS=92} [2024-06-27 18:39:44,514 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 27 predicate places. [2024-06-27 18:39:44,514 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 92 transitions, 683 flow [2024-06-27 18:39:44,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:44,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:44,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:44,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:39:44,515 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:44,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:44,515 INFO L85 PathProgramCache]: Analyzing trace with hash -2145395534, now seen corresponding path program 3 times [2024-06-27 18:39:44,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:44,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269269027] [2024-06-27 18:39:44,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:44,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:44,942 INFO 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 18:39:44,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:44,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269269027] [2024-06-27 18:39:44,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269269027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:44,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:44,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:39:44,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391154302] [2024-06-27 18:39:44,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:44,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:39:44,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:44,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:39:44,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:39:44,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:39:44,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 92 transitions, 683 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:44,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:44,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:39:44,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:45,781 INFO L124 PetriNetUnfolderBase]: 3825/5670 cut-off events. [2024-06-27 18:39:45,782 INFO L125 PetriNetUnfolderBase]: For 16114/16122 co-relation queries the response was YES. [2024-06-27 18:39:45,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19539 conditions, 5670 events. 3825/5670 cut-off events. For 16114/16122 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 31285 event pairs, 1201 based on Foata normal form. 4/5620 useless extension candidates. Maximal degree in co-relation 19508. Up to 5204 conditions per place. [2024-06-27 18:39:45,815 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 77 selfloop transitions, 40 changer transitions 0/125 dead transitions. [2024-06-27 18:39:45,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 125 transitions, 1025 flow [2024-06-27 18:39:45,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:39:45,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:39:45,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-27 18:39:45,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5181159420289855 [2024-06-27 18:39:45,817 INFO L175 Difference]: Start difference. First operand has 79 places, 92 transitions, 683 flow. Second operand 6 states and 143 transitions. [2024-06-27 18:39:45,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 125 transitions, 1025 flow [2024-06-27 18:39:45,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 125 transitions, 964 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-27 18:39:45,832 INFO L231 Difference]: Finished difference. Result has 82 places, 92 transitions, 713 flow [2024-06-27 18:39:45,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=713, PETRI_PLACES=82, PETRI_TRANSITIONS=92} [2024-06-27 18:39:45,833 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 30 predicate places. [2024-06-27 18:39:45,833 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 92 transitions, 713 flow [2024-06-27 18:39:45,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:45,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:45,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:45,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:39:45,834 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:45,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:45,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1402204258, now seen corresponding path program 1 times [2024-06-27 18:39:45,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:45,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572582770] [2024-06-27 18:39:45,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:45,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:46,335 INFO 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 18:39:46,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:46,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572582770] [2024-06-27 18:39:46,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572582770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:46,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:46,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:39:46,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673673441] [2024-06-27 18:39:46,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:46,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:39:46,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:46,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:39:46,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:39:46,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:39:46,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 92 transitions, 713 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:46,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:46,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:39:46,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:47,177 INFO L124 PetriNetUnfolderBase]: 3909/6232 cut-off events. [2024-06-27 18:39:47,177 INFO L125 PetriNetUnfolderBase]: For 17688/17696 co-relation queries the response was YES. [2024-06-27 18:39:47,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20452 conditions, 6232 events. 3909/6232 cut-off events. For 17688/17696 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 37690 event pairs, 1239 based on Foata normal form. 10/6048 useless extension candidates. Maximal degree in co-relation 20420. Up to 5124 conditions per place. [2024-06-27 18:39:47,210 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 119 selfloop transitions, 45 changer transitions 0/172 dead transitions. [2024-06-27 18:39:47,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 172 transitions, 1591 flow [2024-06-27 18:39:47,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:39:47,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:39:47,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-27 18:39:47,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5341614906832298 [2024-06-27 18:39:47,212 INFO L175 Difference]: Start difference. First operand has 82 places, 92 transitions, 713 flow. Second operand 7 states and 172 transitions. [2024-06-27 18:39:47,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 172 transitions, 1591 flow [2024-06-27 18:39:47,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 172 transitions, 1365 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 18:39:47,233 INFO L231 Difference]: Finished difference. Result has 85 places, 125 transitions, 1033 flow [2024-06-27 18:39:47,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1033, PETRI_PLACES=85, PETRI_TRANSITIONS=125} [2024-06-27 18:39:47,233 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 33 predicate places. [2024-06-27 18:39:47,234 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 125 transitions, 1033 flow [2024-06-27 18:39:47,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:47,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:47,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:47,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:39:47,234 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:47,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:47,234 INFO L85 PathProgramCache]: Analyzing trace with hash -2082750932, now seen corresponding path program 2 times [2024-06-27 18:39:47,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:47,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691254494] [2024-06-27 18:39:47,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:47,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:47,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:47,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:47,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:47,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691254494] [2024-06-27 18:39:47,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691254494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:47,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:47,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:39:47,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792286020] [2024-06-27 18:39:47,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:47,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:39:47,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:47,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:39:47,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:39:47,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:39:47,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 125 transitions, 1033 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:47,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:47,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:39:47,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:48,598 INFO L124 PetriNetUnfolderBase]: 3951/6288 cut-off events. [2024-06-27 18:39:48,598 INFO L125 PetriNetUnfolderBase]: For 20823/20831 co-relation queries the response was YES. [2024-06-27 18:39:48,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22378 conditions, 6288 events. 3951/6288 cut-off events. For 20823/20831 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 37967 event pairs, 1247 based on Foata normal form. 5/6091 useless extension candidates. Maximal degree in co-relation 22343. Up to 5144 conditions per place. [2024-06-27 18:39:48,634 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 121 selfloop transitions, 53 changer transitions 0/182 dead transitions. [2024-06-27 18:39:48,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 182 transitions, 1701 flow [2024-06-27 18:39:48,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:39:48,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:39:48,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-27 18:39:48,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372670807453416 [2024-06-27 18:39:48,636 INFO L175 Difference]: Start difference. First operand has 85 places, 125 transitions, 1033 flow. Second operand 7 states and 173 transitions. [2024-06-27 18:39:48,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 182 transitions, 1701 flow [2024-06-27 18:39:48,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 182 transitions, 1647 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-27 18:39:48,659 INFO L231 Difference]: Finished difference. Result has 90 places, 136 transitions, 1211 flow [2024-06-27 18:39:48,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1211, PETRI_PLACES=90, PETRI_TRANSITIONS=136} [2024-06-27 18:39:48,660 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 38 predicate places. [2024-06-27 18:39:48,660 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 136 transitions, 1211 flow [2024-06-27 18:39:48,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:48,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:48,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:48,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:39:48,661 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:48,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:48,661 INFO L85 PathProgramCache]: Analyzing trace with hash 221326366, now seen corresponding path program 3 times [2024-06-27 18:39:48,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:48,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582931705] [2024-06-27 18:39:48,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:48,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:48,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:49,132 INFO 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 18:39:49,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:49,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582931705] [2024-06-27 18:39:49,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582931705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:49,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:49,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:39:49,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702502294] [2024-06-27 18:39:49,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:49,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:39:49,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:49,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:39:49,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:39:49,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:39:49,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 136 transitions, 1211 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:49,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:49,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:39:49,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:50,002 INFO L124 PetriNetUnfolderBase]: 3941/6274 cut-off events. [2024-06-27 18:39:50,002 INFO L125 PetriNetUnfolderBase]: For 23940/23948 co-relation queries the response was YES. [2024-06-27 18:39:50,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22909 conditions, 6274 events. 3941/6274 cut-off events. For 23940/23948 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 37962 event pairs, 1247 based on Foata normal form. 5/6077 useless extension candidates. Maximal degree in co-relation 22872. Up to 5140 conditions per place. [2024-06-27 18:39:50,040 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 113 selfloop transitions, 57 changer transitions 0/178 dead transitions. [2024-06-27 18:39:50,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 178 transitions, 1732 flow [2024-06-27 18:39:50,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:39:50,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:39:50,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-27 18:39:50,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5279503105590062 [2024-06-27 18:39:50,042 INFO L175 Difference]: Start difference. First operand has 90 places, 136 transitions, 1211 flow. Second operand 7 states and 170 transitions. [2024-06-27 18:39:50,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 178 transitions, 1732 flow [2024-06-27 18:39:50,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 178 transitions, 1672 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-06-27 18:39:50,070 INFO L231 Difference]: Finished difference. Result has 95 places, 137 transitions, 1282 flow [2024-06-27 18:39:50,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1282, PETRI_PLACES=95, PETRI_TRANSITIONS=137} [2024-06-27 18:39:50,071 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 43 predicate places. [2024-06-27 18:39:50,071 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 137 transitions, 1282 flow [2024-06-27 18:39:50,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:50,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:50,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:50,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:39:50,071 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:50,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:50,071 INFO L85 PathProgramCache]: Analyzing trace with hash 221335294, now seen corresponding path program 1 times [2024-06-27 18:39:50,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:50,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043693395] [2024-06-27 18:39:50,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:50,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:50,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:50,831 INFO 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 18:39:50,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:50,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043693395] [2024-06-27 18:39:50,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043693395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:50,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:50,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:39:50,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034109600] [2024-06-27 18:39:50,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:50,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:39:50,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:50,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:39:50,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:39:50,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:39:50,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 137 transitions, 1282 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:50,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:50,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:39:50,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:51,843 INFO L124 PetriNetUnfolderBase]: 3331/5511 cut-off events. [2024-06-27 18:39:51,843 INFO L125 PetriNetUnfolderBase]: For 22517/22519 co-relation queries the response was YES. [2024-06-27 18:39:51,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20601 conditions, 5511 events. 3331/5511 cut-off events. For 22517/22519 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 34233 event pairs, 1044 based on Foata normal form. 4/5351 useless extension candidates. Maximal degree in co-relation 20561. Up to 4717 conditions per place. [2024-06-27 18:39:51,871 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 147 selfloop transitions, 17 changer transitions 0/173 dead transitions. [2024-06-27 18:39:51,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 173 transitions, 1730 flow [2024-06-27 18:39:51,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:39:51,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:39:51,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-27 18:39:51,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5093167701863354 [2024-06-27 18:39:51,875 INFO L175 Difference]: Start difference. First operand has 95 places, 137 transitions, 1282 flow. Second operand 7 states and 164 transitions. [2024-06-27 18:39:51,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 173 transitions, 1730 flow [2024-06-27 18:39:51,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 173 transitions, 1643 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 18:39:51,900 INFO L231 Difference]: Finished difference. Result has 98 places, 140 transitions, 1269 flow [2024-06-27 18:39:51,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1195, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1269, PETRI_PLACES=98, PETRI_TRANSITIONS=140} [2024-06-27 18:39:51,901 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 46 predicate places. [2024-06-27 18:39:51,901 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 140 transitions, 1269 flow [2024-06-27 18:39:51,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:51,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:51,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:51,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:39:51,902 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:51,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:51,902 INFO L85 PathProgramCache]: Analyzing trace with hash -478617584, now seen corresponding path program 1 times [2024-06-27 18:39:51,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:51,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337288773] [2024-06-27 18:39:51,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:51,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:52,349 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 18:39:52,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:52,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337288773] [2024-06-27 18:39:52,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337288773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:52,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:52,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:39:52,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835419273] [2024-06-27 18:39:52,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:52,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:39:52,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:52,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:39:52,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:39:52,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:39:52,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 140 transitions, 1269 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:52,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:52,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:39:52,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:53,039 INFO L124 PetriNetUnfolderBase]: 3336/5502 cut-off events. [2024-06-27 18:39:53,039 INFO L125 PetriNetUnfolderBase]: For 24913/24915 co-relation queries the response was YES. [2024-06-27 18:39:53,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20873 conditions, 5502 events. 3336/5502 cut-off events. For 24913/24915 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 34018 event pairs, 1272 based on Foata normal form. 1/5338 useless extension candidates. Maximal degree in co-relation 20832. Up to 4790 conditions per place. [2024-06-27 18:39:53,070 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 144 selfloop transitions, 9 changer transitions 0/162 dead transitions. [2024-06-27 18:39:53,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 162 transitions, 1688 flow [2024-06-27 18:39:53,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:39:53,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:39:53,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-06-27 18:39:53,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49130434782608695 [2024-06-27 18:39:53,072 INFO L175 Difference]: Start difference. First operand has 98 places, 140 transitions, 1269 flow. Second operand 5 states and 113 transitions. [2024-06-27 18:39:53,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 162 transitions, 1688 flow [2024-06-27 18:39:53,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 162 transitions, 1632 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 18:39:53,097 INFO L231 Difference]: Finished difference. Result has 99 places, 147 transitions, 1323 flow [2024-06-27 18:39:53,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1219, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1323, PETRI_PLACES=99, PETRI_TRANSITIONS=147} [2024-06-27 18:39:53,098 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 47 predicate places. [2024-06-27 18:39:53,098 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 147 transitions, 1323 flow [2024-06-27 18:39:53,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:53,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:53,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:53,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:39:53,098 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:53,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:53,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1362689572, now seen corresponding path program 1 times [2024-06-27 18:39:53,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:53,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193090872] [2024-06-27 18:39:53,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:53,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:53,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:53,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:53,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:53,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193090872] [2024-06-27 18:39:53,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193090872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:53,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:53,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:39:53,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296986136] [2024-06-27 18:39:53,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:53,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:39:53,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:53,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:39:53,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:39:53,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:39:53,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 147 transitions, 1323 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:53,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:53,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:39:53,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:54,603 INFO L124 PetriNetUnfolderBase]: 4037/6445 cut-off events. [2024-06-27 18:39:54,604 INFO L125 PetriNetUnfolderBase]: For 33849/33855 co-relation queries the response was YES. [2024-06-27 18:39:54,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25455 conditions, 6445 events. 4037/6445 cut-off events. For 33849/33855 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 39172 event pairs, 1254 based on Foata normal form. 5/6254 useless extension candidates. Maximal degree in co-relation 25412. Up to 5222 conditions per place. [2024-06-27 18:39:54,637 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 130 selfloop transitions, 61 changer transitions 0/199 dead transitions. [2024-06-27 18:39:54,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 199 transitions, 2030 flow [2024-06-27 18:39:54,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:39:54,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:39:54,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-27 18:39:54,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403726708074534 [2024-06-27 18:39:54,639 INFO L175 Difference]: Start difference. First operand has 99 places, 147 transitions, 1323 flow. Second operand 7 states and 174 transitions. [2024-06-27 18:39:54,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 199 transitions, 2030 flow [2024-06-27 18:39:54,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 199 transitions, 2007 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-27 18:39:54,665 INFO L231 Difference]: Finished difference. Result has 105 places, 157 transitions, 1568 flow [2024-06-27 18:39:54,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1300, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1568, PETRI_PLACES=105, PETRI_TRANSITIONS=157} [2024-06-27 18:39:54,666 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 53 predicate places. [2024-06-27 18:39:54,666 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 157 transitions, 1568 flow [2024-06-27 18:39:54,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:54,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:54,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:54,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:39:54,666 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:54,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:54,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1362683992, now seen corresponding path program 2 times [2024-06-27 18:39:54,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:54,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588686406] [2024-06-27 18:39:54,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:54,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:55,132 INFO 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 18:39:55,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:55,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588686406] [2024-06-27 18:39:55,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588686406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:55,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:55,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:39:55,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903418045] [2024-06-27 18:39:55,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:55,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:39:55,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:55,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:39:55,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:39:55,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:39:55,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 157 transitions, 1568 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:55,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:55,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:39:55,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:56,103 INFO L124 PetriNetUnfolderBase]: 4027/6445 cut-off events. [2024-06-27 18:39:56,103 INFO L125 PetriNetUnfolderBase]: For 37504/37514 co-relation queries the response was YES. [2024-06-27 18:39:56,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26230 conditions, 6445 events. 4027/6445 cut-off events. For 37504/37514 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 39308 event pairs, 1238 based on Foata normal form. 11/6260 useless extension candidates. Maximal degree in co-relation 26184. Up to 5214 conditions per place. [2024-06-27 18:39:56,137 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 131 selfloop transitions, 64 changer transitions 0/203 dead transitions. [2024-06-27 18:39:56,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 203 transitions, 2169 flow [2024-06-27 18:39:56,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:39:56,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:39:56,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 18:39:56,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546583850931677 [2024-06-27 18:39:56,138 INFO L175 Difference]: Start difference. First operand has 105 places, 157 transitions, 1568 flow. Second operand 7 states and 176 transitions. [2024-06-27 18:39:56,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 203 transitions, 2169 flow [2024-06-27 18:39:56,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 203 transitions, 2078 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-27 18:39:56,172 INFO L231 Difference]: Finished difference. Result has 110 places, 159 transitions, 1670 flow [2024-06-27 18:39:56,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1478, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1670, PETRI_PLACES=110, PETRI_TRANSITIONS=159} [2024-06-27 18:39:56,172 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 58 predicate places. [2024-06-27 18:39:56,172 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 159 transitions, 1670 flow [2024-06-27 18:39:56,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:56,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:56,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:56,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:39:56,173 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:56,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:56,173 INFO L85 PathProgramCache]: Analyzing trace with hash 684860248, now seen corresponding path program 3 times [2024-06-27 18:39:56,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:56,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797894818] [2024-06-27 18:39:56,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:56,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:56,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:56,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:56,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:56,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797894818] [2024-06-27 18:39:56,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797894818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:56,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:56,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:39:56,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076496716] [2024-06-27 18:39:56,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:56,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:39:56,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:56,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:39:56,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:39:56,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:39:56,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 159 transitions, 1670 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:56,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:56,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:39:56,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:57,589 INFO L124 PetriNetUnfolderBase]: 4017/6417 cut-off events. [2024-06-27 18:39:57,589 INFO L125 PetriNetUnfolderBase]: For 41261/41273 co-relation queries the response was YES. [2024-06-27 18:39:57,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26601 conditions, 6417 events. 4017/6417 cut-off events. For 41261/41273 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 39079 event pairs, 1273 based on Foata normal form. 9/6226 useless extension candidates. Maximal degree in co-relation 26553. Up to 5206 conditions per place. [2024-06-27 18:39:57,623 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 126 selfloop transitions, 60 changer transitions 0/194 dead transitions. [2024-06-27 18:39:57,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 194 transitions, 2157 flow [2024-06-27 18:39:57,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:39:57,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:39:57,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-27 18:39:57,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5124223602484472 [2024-06-27 18:39:57,625 INFO L175 Difference]: Start difference. First operand has 110 places, 159 transitions, 1670 flow. Second operand 7 states and 165 transitions. [2024-06-27 18:39:57,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 194 transitions, 2157 flow [2024-06-27 18:39:57,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 194 transitions, 2063 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-27 18:39:57,655 INFO L231 Difference]: Finished difference. Result has 113 places, 160 transitions, 1716 flow [2024-06-27 18:39:57,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1577, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1716, PETRI_PLACES=113, PETRI_TRANSITIONS=160} [2024-06-27 18:39:57,656 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 61 predicate places. [2024-06-27 18:39:57,656 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 160 transitions, 1716 flow [2024-06-27 18:39:57,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:57,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:57,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:57,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:39:57,656 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:57,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:57,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1598235733, now seen corresponding path program 1 times [2024-06-27 18:39:57,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:57,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691824820] [2024-06-27 18:39:57,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:57,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:57,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:58,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:58,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:58,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691824820] [2024-06-27 18:39:58,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691824820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:58,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:58,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:39:58,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056721958] [2024-06-27 18:39:58,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:58,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:39:58,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:58,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:39:58,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:39:58,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:39:58,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 160 transitions, 1716 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:58,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:58,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:39:58,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:59,077 INFO L124 PetriNetUnfolderBase]: 4059/6473 cut-off events. [2024-06-27 18:39:59,078 INFO L125 PetriNetUnfolderBase]: For 44850/44856 co-relation queries the response was YES. [2024-06-27 18:39:59,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27076 conditions, 6473 events. 4059/6473 cut-off events. For 44850/44856 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 39260 event pairs, 986 based on Foata normal form. 8/6287 useless extension candidates. Maximal degree in co-relation 27027. Up to 5311 conditions per place. [2024-06-27 18:39:59,118 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 136 selfloop transitions, 63 changer transitions 0/207 dead transitions. [2024-06-27 18:39:59,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 207 transitions, 2352 flow [2024-06-27 18:39:59,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:39:59,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:39:59,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-27 18:39:59,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5279503105590062 [2024-06-27 18:39:59,120 INFO L175 Difference]: Start difference. First operand has 113 places, 160 transitions, 1716 flow. Second operand 7 states and 170 transitions. [2024-06-27 18:39:59,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 207 transitions, 2352 flow [2024-06-27 18:39:59,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 207 transitions, 2265 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 18:39:59,156 INFO L231 Difference]: Finished difference. Result has 116 places, 164 transitions, 1810 flow [2024-06-27 18:39:59,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1629, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1810, PETRI_PLACES=116, PETRI_TRANSITIONS=164} [2024-06-27 18:39:59,157 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 64 predicate places. [2024-06-27 18:39:59,157 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 164 transitions, 1810 flow [2024-06-27 18:39:59,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:59,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:59,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:59,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:39:59,158 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:59,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:59,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1524179087, now seen corresponding path program 2 times [2024-06-27 18:39:59,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:59,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367233187] [2024-06-27 18:39:59,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:59,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:59,730 INFO 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 18:39:59,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:59,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367233187] [2024-06-27 18:39:59,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367233187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:59,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:59,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:39:59,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090440530] [2024-06-27 18:39:59,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:59,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:39:59,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:59,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:39:59,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:39:59,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:39:59,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 164 transitions, 1810 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:59,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:59,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:39:59,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:00,684 INFO L124 PetriNetUnfolderBase]: 4051/6470 cut-off events. [2024-06-27 18:40:00,684 INFO L125 PetriNetUnfolderBase]: For 49275/49281 co-relation queries the response was YES. [2024-06-27 18:40:00,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27442 conditions, 6470 events. 4051/6470 cut-off events. For 49275/49281 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 39387 event pairs, 1282 based on Foata normal form. 8/6280 useless extension candidates. Maximal degree in co-relation 27391. Up to 5462 conditions per place. [2024-06-27 18:40:00,727 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 127 selfloop transitions, 70 changer transitions 0/205 dead transitions. [2024-06-27 18:40:00,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 205 transitions, 2336 flow [2024-06-27 18:40:00,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:40:00,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:40:00,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-27 18:40:00,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-27 18:40:00,728 INFO L175 Difference]: Start difference. First operand has 116 places, 164 transitions, 1810 flow. Second operand 7 states and 168 transitions. [2024-06-27 18:40:00,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 205 transitions, 2336 flow [2024-06-27 18:40:00,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 205 transitions, 2250 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-27 18:40:00,771 INFO L231 Difference]: Finished difference. Result has 120 places, 164 transitions, 1876 flow [2024-06-27 18:40:00,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1724, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1876, PETRI_PLACES=120, PETRI_TRANSITIONS=164} [2024-06-27 18:40:00,772 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 68 predicate places. [2024-06-27 18:40:00,772 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 164 transitions, 1876 flow [2024-06-27 18:40:00,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:00,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:00,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:00,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:40:00,772 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:00,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:00,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1639654955, now seen corresponding path program 1 times [2024-06-27 18:40:00,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:00,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981881572] [2024-06-27 18:40:00,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:00,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:01,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:01,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:01,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981881572] [2024-06-27 18:40:01,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981881572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:01,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:01,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:01,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303063646] [2024-06-27 18:40:01,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:01,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:01,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:01,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:01,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:01,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:40:01,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 164 transitions, 1876 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:40:01,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:01,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:40:01,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:02,683 INFO L124 PetriNetUnfolderBase]: 4239/6746 cut-off events. [2024-06-27 18:40:02,683 INFO L125 PetriNetUnfolderBase]: For 57854/57860 co-relation queries the response was YES. [2024-06-27 18:40:02,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29106 conditions, 6746 events. 4239/6746 cut-off events. For 57854/57860 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 41110 event pairs, 1146 based on Foata normal form. 25/6575 useless extension candidates. Maximal degree in co-relation 29053. Up to 5312 conditions per place. [2024-06-27 18:40:02,740 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 142 selfloop transitions, 67 changer transitions 0/217 dead transitions. [2024-06-27 18:40:02,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 217 transitions, 2490 flow [2024-06-27 18:40:02,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:02,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:02,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 18:40:02,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532608695652174 [2024-06-27 18:40:02,743 INFO L175 Difference]: Start difference. First operand has 120 places, 164 transitions, 1876 flow. Second operand 8 states and 196 transitions. [2024-06-27 18:40:02,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 217 transitions, 2490 flow [2024-06-27 18:40:02,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 217 transitions, 2339 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 18:40:02,790 INFO L231 Difference]: Finished difference. Result has 122 places, 167 transitions, 1908 flow [2024-06-27 18:40:02,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1725, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1908, PETRI_PLACES=122, PETRI_TRANSITIONS=167} [2024-06-27 18:40:02,791 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 70 predicate places. [2024-06-27 18:40:02,791 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 167 transitions, 1908 flow [2024-06-27 18:40:02,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:40:02,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:02,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:02,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:40:02,791 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:02,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:02,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1731292593, now seen corresponding path program 1 times [2024-06-27 18:40:02,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:02,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668151498] [2024-06-27 18:40:02,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:02,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:02,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:03,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:03,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:03,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668151498] [2024-06-27 18:40:03,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668151498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:03,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:03,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:40:03,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788154157] [2024-06-27 18:40:03,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:03,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:40:03,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:03,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:40:03,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:40:03,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:40:03,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 167 transitions, 1908 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:03,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:03,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:40:03,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:04,032 INFO L124 PetriNetUnfolderBase]: 4259/6782 cut-off events. [2024-06-27 18:40:04,032 INFO L125 PetriNetUnfolderBase]: For 59714/59720 co-relation queries the response was YES. [2024-06-27 18:40:04,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30181 conditions, 6782 events. 4259/6782 cut-off events. For 59714/59720 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 41095 event pairs, 1485 based on Foata normal form. 7/6591 useless extension candidates. Maximal degree in co-relation 30127. Up to 6072 conditions per place. [2024-06-27 18:40:04,081 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 179 selfloop transitions, 15 changer transitions 0/202 dead transitions. [2024-06-27 18:40:04,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 202 transitions, 2504 flow [2024-06-27 18:40:04,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:40:04,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:40:04,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-27 18:40:04,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48188405797101447 [2024-06-27 18:40:04,082 INFO L175 Difference]: Start difference. First operand has 122 places, 167 transitions, 1908 flow. Second operand 6 states and 133 transitions. [2024-06-27 18:40:04,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 202 transitions, 2504 flow [2024-06-27 18:40:04,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 202 transitions, 2347 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 18:40:04,137 INFO L231 Difference]: Finished difference. Result has 123 places, 176 transitions, 1929 flow [2024-06-27 18:40:04,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1759, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1929, PETRI_PLACES=123, PETRI_TRANSITIONS=176} [2024-06-27 18:40:04,138 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 71 predicate places. [2024-06-27 18:40:04,138 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 176 transitions, 1929 flow [2024-06-27 18:40:04,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:04,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:04,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:04,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:40:04,139 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:04,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:04,139 INFO L85 PathProgramCache]: Analyzing trace with hash 2013377919, now seen corresponding path program 2 times [2024-06-27 18:40:04,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:04,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012127684] [2024-06-27 18:40:04,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:04,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:04,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:04,881 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 18:40:04,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:04,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012127684] [2024-06-27 18:40:04,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012127684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:04,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:04,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:04,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499416891] [2024-06-27 18:40:04,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:04,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:04,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:04,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:04,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:04,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:40:04,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 176 transitions, 1929 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:40:04,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:04,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:40:04,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:05,980 INFO L124 PetriNetUnfolderBase]: 4293/6802 cut-off events. [2024-06-27 18:40:05,981 INFO L125 PetriNetUnfolderBase]: For 63222/63233 co-relation queries the response was YES. [2024-06-27 18:40:06,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30726 conditions, 6802 events. 4293/6802 cut-off events. For 63222/63233 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 41150 event pairs, 1257 based on Foata normal form. 6/6604 useless extension candidates. Maximal degree in co-relation 30670. Up to 5587 conditions per place. [2024-06-27 18:40:06,033 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 145 selfloop transitions, 73 changer transitions 0/226 dead transitions. [2024-06-27 18:40:06,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 226 transitions, 2571 flow [2024-06-27 18:40:06,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:06,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:06,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-27 18:40:06,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5190217391304348 [2024-06-27 18:40:06,035 INFO L175 Difference]: Start difference. First operand has 123 places, 176 transitions, 1929 flow. Second operand 8 states and 191 transitions. [2024-06-27 18:40:06,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 226 transitions, 2571 flow [2024-06-27 18:40:06,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 226 transitions, 2533 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-27 18:40:06,092 INFO L231 Difference]: Finished difference. Result has 128 places, 179 transitions, 2093 flow [2024-06-27 18:40:06,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1891, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2093, PETRI_PLACES=128, PETRI_TRANSITIONS=179} [2024-06-27 18:40:06,092 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 76 predicate places. [2024-06-27 18:40:06,093 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 179 transitions, 2093 flow [2024-06-27 18:40:06,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:40:06,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:06,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:06,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:40:06,093 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:06,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:06,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1775352011, now seen corresponding path program 3 times [2024-06-27 18:40:06,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:06,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493681627] [2024-06-27 18:40:06,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:06,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:06,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:06,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:06,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:06,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493681627] [2024-06-27 18:40:06,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493681627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:06,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:06,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:06,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965951063] [2024-06-27 18:40:06,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:06,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:06,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:06,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:06,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:06,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:40:06,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 179 transitions, 2093 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:40:06,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:06,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:40:06,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:07,991 INFO L124 PetriNetUnfolderBase]: 4327/6867 cut-off events. [2024-06-27 18:40:07,991 INFO L125 PetriNetUnfolderBase]: For 72661/72672 co-relation queries the response was YES. [2024-06-27 18:40:08,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32263 conditions, 6867 events. 4327/6867 cut-off events. For 72661/72672 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 41704 event pairs, 1263 based on Foata normal form. 6/6664 useless extension candidates. Maximal degree in co-relation 32206. Up to 5637 conditions per place. [2024-06-27 18:40:08,039 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 142 selfloop transitions, 76 changer transitions 0/226 dead transitions. [2024-06-27 18:40:08,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 226 transitions, 2727 flow [2024-06-27 18:40:08,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:08,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:08,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 18:40:08,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163043478260869 [2024-06-27 18:40:08,040 INFO L175 Difference]: Start difference. First operand has 128 places, 179 transitions, 2093 flow. Second operand 8 states and 190 transitions. [2024-06-27 18:40:08,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 226 transitions, 2727 flow [2024-06-27 18:40:08,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 226 transitions, 2549 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 18:40:08,110 INFO L231 Difference]: Finished difference. Result has 130 places, 182 transitions, 2129 flow [2024-06-27 18:40:08,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1915, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2129, PETRI_PLACES=130, PETRI_TRANSITIONS=182} [2024-06-27 18:40:08,110 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 78 predicate places. [2024-06-27 18:40:08,111 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 182 transitions, 2129 flow [2024-06-27 18:40:08,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:40:08,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:08,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:08,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:40:08,111 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:08,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:08,112 INFO L85 PathProgramCache]: Analyzing trace with hash -2045117347, now seen corresponding path program 4 times [2024-06-27 18:40:08,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:08,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712670413] [2024-06-27 18:40:08,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:08,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:08,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:08,852 INFO 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 18:40:08,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:08,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712670413] [2024-06-27 18:40:08,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712670413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:08,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:08,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:08,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904541679] [2024-06-27 18:40:08,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:08,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:08,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:08,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:08,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:08,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:40:08,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 182 transitions, 2129 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:40:08,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:08,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:40:08,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:09,950 INFO L124 PetriNetUnfolderBase]: 4319/6720 cut-off events. [2024-06-27 18:40:09,951 INFO L125 PetriNetUnfolderBase]: For 77868/77879 co-relation queries the response was YES. [2024-06-27 18:40:09,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32580 conditions, 6720 events. 4319/6720 cut-off events. For 77868/77879 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 40034 event pairs, 1132 based on Foata normal form. 6/6562 useless extension candidates. Maximal degree in co-relation 32522. Up to 5299 conditions per place. [2024-06-27 18:40:10,001 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 138 selfloop transitions, 87 changer transitions 0/233 dead transitions. [2024-06-27 18:40:10,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 233 transitions, 2799 flow [2024-06-27 18:40:10,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:10,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:10,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-27 18:40:10,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271739130434783 [2024-06-27 18:40:10,002 INFO L175 Difference]: Start difference. First operand has 130 places, 182 transitions, 2129 flow. Second operand 8 states and 194 transitions. [2024-06-27 18:40:10,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 233 transitions, 2799 flow [2024-06-27 18:40:10,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 233 transitions, 2609 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 18:40:10,099 INFO L231 Difference]: Finished difference. Result has 132 places, 185 transitions, 2181 flow [2024-06-27 18:40:10,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1939, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2181, PETRI_PLACES=132, PETRI_TRANSITIONS=185} [2024-06-27 18:40:10,100 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 80 predicate places. [2024-06-27 18:40:10,100 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 185 transitions, 2181 flow [2024-06-27 18:40:10,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 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 18:40:10,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:10,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:10,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:40:10,100 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:10,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:10,101 INFO L85 PathProgramCache]: Analyzing trace with hash -389964753, now seen corresponding path program 2 times [2024-06-27 18:40:10,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:10,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040662970] [2024-06-27 18:40:10,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:10,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:10,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:10,540 INFO 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 18:40:10,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:10,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040662970] [2024-06-27 18:40:10,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040662970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:10,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:10,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:40:10,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80441986] [2024-06-27 18:40:10,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:10,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:40:10,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:10,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:40:10,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:40:10,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:40:10,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 185 transitions, 2181 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:10,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:10,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:40:10,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:11,455 INFO L124 PetriNetUnfolderBase]: 4324/6760 cut-off events. [2024-06-27 18:40:11,455 INFO L125 PetriNetUnfolderBase]: For 83392/83418 co-relation queries the response was YES. [2024-06-27 18:40:11,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33302 conditions, 6760 events. 4324/6760 cut-off events. For 83392/83418 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 40227 event pairs, 1495 based on Foata normal form. 21/6621 useless extension candidates. Maximal degree in co-relation 33243. Up to 6144 conditions per place. [2024-06-27 18:40:11,501 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 187 selfloop transitions, 20 changer transitions 0/215 dead transitions. [2024-06-27 18:40:11,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 215 transitions, 2753 flow [2024-06-27 18:40:11,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:40:11,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:40:11,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-06-27 18:40:11,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4746376811594203 [2024-06-27 18:40:11,502 INFO L175 Difference]: Start difference. First operand has 132 places, 185 transitions, 2181 flow. Second operand 6 states and 131 transitions. [2024-06-27 18:40:11,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 215 transitions, 2753 flow [2024-06-27 18:40:11,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 215 transitions, 2535 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-27 18:40:11,572 INFO L231 Difference]: Finished difference. Result has 133 places, 191 transitions, 2080 flow [2024-06-27 18:40:11,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1963, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2080, PETRI_PLACES=133, PETRI_TRANSITIONS=191} [2024-06-27 18:40:11,573 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 81 predicate places. [2024-06-27 18:40:11,573 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 191 transitions, 2080 flow [2024-06-27 18:40:11,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:11,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:11,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:11,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:40:11,574 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:11,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:11,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1725572721, now seen corresponding path program 1 times [2024-06-27 18:40:11,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:11,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266312811] [2024-06-27 18:40:11,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:11,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:11,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:11,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:11,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266312811] [2024-06-27 18:40:11,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266312811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:11,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:11,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:40:11,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734724396] [2024-06-27 18:40:11,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:11,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:40:11,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:11,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:40:11,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:40:12,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:40:12,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 191 transitions, 2080 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:12,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:12,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:40:12,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:12,866 INFO L124 PetriNetUnfolderBase]: 3986/6389 cut-off events. [2024-06-27 18:40:12,866 INFO L125 PetriNetUnfolderBase]: For 88279/88281 co-relation queries the response was YES. [2024-06-27 18:40:12,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32037 conditions, 6389 events. 3986/6389 cut-off events. For 88279/88281 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 39244 event pairs, 1310 based on Foata normal form. 2/6216 useless extension candidates. Maximal degree in co-relation 31976. Up to 5647 conditions per place. [2024-06-27 18:40:12,905 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 194 selfloop transitions, 13 changer transitions 0/219 dead transitions. [2024-06-27 18:40:12,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 219 transitions, 2646 flow [2024-06-27 18:40:12,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:40:12,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:40:12,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-27 18:40:12,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-06-27 18:40:12,906 INFO L175 Difference]: Start difference. First operand has 133 places, 191 transitions, 2080 flow. Second operand 6 states and 135 transitions. [2024-06-27 18:40:12,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 219 transitions, 2646 flow [2024-06-27 18:40:12,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 219 transitions, 2610 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-27 18:40:12,985 INFO L231 Difference]: Finished difference. Result has 138 places, 198 transitions, 2171 flow [2024-06-27 18:40:12,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2044, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2171, PETRI_PLACES=138, PETRI_TRANSITIONS=198} [2024-06-27 18:40:12,986 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 86 predicate places. [2024-06-27 18:40:12,986 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 198 transitions, 2171 flow [2024-06-27 18:40:12,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:12,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:12,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:12,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:40:12,986 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:12,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:12,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1725422061, now seen corresponding path program 2 times [2024-06-27 18:40:12,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:12,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706081761] [2024-06-27 18:40:12,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:12,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:13,410 INFO 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 18:40:13,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:13,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706081761] [2024-06-27 18:40:13,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706081761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:13,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:13,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:40:13,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920348190] [2024-06-27 18:40:13,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:13,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:40:13,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:13,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:40:13,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:40:13,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:40:13,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 198 transitions, 2171 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:13,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:13,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:40:13,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:14,259 INFO L124 PetriNetUnfolderBase]: 3995/6404 cut-off events. [2024-06-27 18:40:14,259 INFO L125 PetriNetUnfolderBase]: For 93365/93373 co-relation queries the response was YES. [2024-06-27 18:40:14,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33085 conditions, 6404 events. 3995/6404 cut-off events. For 93365/93373 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 39318 event pairs, 1304 based on Foata normal form. 8/6237 useless extension candidates. Maximal degree in co-relation 33021. Up to 5628 conditions per place. [2024-06-27 18:40:14,314 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 190 selfloop transitions, 20 changer transitions 0/222 dead transitions. [2024-06-27 18:40:14,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 222 transitions, 2713 flow [2024-06-27 18:40:14,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:40:14,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:40:14,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-27 18:40:14,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4927536231884058 [2024-06-27 18:40:14,315 INFO L175 Difference]: Start difference. First operand has 138 places, 198 transitions, 2171 flow. Second operand 6 states and 136 transitions. [2024-06-27 18:40:14,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 222 transitions, 2713 flow [2024-06-27 18:40:14,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 222 transitions, 2676 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-27 18:40:14,409 INFO L231 Difference]: Finished difference. Result has 141 places, 201 transitions, 2217 flow [2024-06-27 18:40:14,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2134, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2217, PETRI_PLACES=141, PETRI_TRANSITIONS=201} [2024-06-27 18:40:14,410 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 89 predicate places. [2024-06-27 18:40:14,410 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 201 transitions, 2217 flow [2024-06-27 18:40:14,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:14,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:14,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:14,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:40:14,411 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:14,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:14,411 INFO L85 PathProgramCache]: Analyzing trace with hash -389949873, now seen corresponding path program 1 times [2024-06-27 18:40:14,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:14,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227290625] [2024-06-27 18:40:14,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:14,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:15,112 INFO 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 18:40:15,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:15,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227290625] [2024-06-27 18:40:15,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227290625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:15,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:15,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:40:15,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626355560] [2024-06-27 18:40:15,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:15,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:40:15,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:15,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:40:15,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:40:15,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:40:15,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 201 transitions, 2217 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 18:40:15,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:15,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:40:15,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:16,025 INFO L124 PetriNetUnfolderBase]: 4379/6834 cut-off events. [2024-06-27 18:40:16,026 INFO L125 PetriNetUnfolderBase]: For 98502/98504 co-relation queries the response was YES. [2024-06-27 18:40:16,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35538 conditions, 6834 events. 4379/6834 cut-off events. For 98502/98504 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 40679 event pairs, 1500 based on Foata normal form. 1/6675 useless extension candidates. Maximal degree in co-relation 35473. Up to 6247 conditions per place. [2024-06-27 18:40:16,082 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 207 selfloop transitions, 16 changer transitions 0/231 dead transitions. [2024-06-27 18:40:16,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 231 transitions, 2821 flow [2024-06-27 18:40:16,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:40:16,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:40:16,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 149 transitions. [2024-06-27 18:40:16,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46273291925465837 [2024-06-27 18:40:16,083 INFO L175 Difference]: Start difference. First operand has 141 places, 201 transitions, 2217 flow. Second operand 7 states and 149 transitions. [2024-06-27 18:40:16,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 231 transitions, 2821 flow [2024-06-27 18:40:16,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 231 transitions, 2764 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-27 18:40:16,201 INFO L231 Difference]: Finished difference. Result has 144 places, 205 transitions, 2255 flow [2024-06-27 18:40:16,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2160, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2255, PETRI_PLACES=144, PETRI_TRANSITIONS=205} [2024-06-27 18:40:16,202 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 92 predicate places. [2024-06-27 18:40:16,202 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 205 transitions, 2255 flow [2024-06-27 18:40:16,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 18:40:16,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:16,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:16,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:40:16,203 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:16,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:16,203 INFO L85 PathProgramCache]: Analyzing trace with hash -83653137, now seen corresponding path program 1 times [2024-06-27 18:40:16,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:16,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520191328] [2024-06-27 18:40:16,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:16,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:16,743 INFO 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 18:40:16,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:16,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520191328] [2024-06-27 18:40:16,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520191328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:16,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:16,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:16,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287310699] [2024-06-27 18:40:16,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:16,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:16,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:16,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:16,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:16,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:40:16,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 205 transitions, 2255 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:16,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:16,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:40:16,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:17,899 INFO L124 PetriNetUnfolderBase]: 4605/7328 cut-off events. [2024-06-27 18:40:17,899 INFO L125 PetriNetUnfolderBase]: For 118728/118736 co-relation queries the response was YES. [2024-06-27 18:40:17,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38662 conditions, 7328 events. 4605/7328 cut-off events. For 118728/118736 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 44822 event pairs, 869 based on Foata normal form. 18/7144 useless extension candidates. Maximal degree in co-relation 38596. Up to 5104 conditions per place. [2024-06-27 18:40:17,966 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 189 selfloop transitions, 74 changer transitions 0/271 dead transitions. [2024-06-27 18:40:17,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 271 transitions, 3207 flow [2024-06-27 18:40:17,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:17,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:17,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-27 18:40:17,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5407608695652174 [2024-06-27 18:40:17,968 INFO L175 Difference]: Start difference. First operand has 144 places, 205 transitions, 2255 flow. Second operand 8 states and 199 transitions. [2024-06-27 18:40:17,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 271 transitions, 3207 flow [2024-06-27 18:40:18,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 271 transitions, 3118 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-27 18:40:18,104 INFO L231 Difference]: Finished difference. Result has 148 places, 215 transitions, 2499 flow [2024-06-27 18:40:18,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2166, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2499, PETRI_PLACES=148, PETRI_TRANSITIONS=215} [2024-06-27 18:40:18,104 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 96 predicate places. [2024-06-27 18:40:18,105 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 215 transitions, 2499 flow [2024-06-27 18:40:18,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:18,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:18,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:18,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:40:18,105 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:18,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:18,105 INFO L85 PathProgramCache]: Analyzing trace with hash 4912623, now seen corresponding path program 2 times [2024-06-27 18:40:18,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:18,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130806609] [2024-06-27 18:40:18,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:18,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:18,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:18,641 INFO 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 18:40:18,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:18,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130806609] [2024-06-27 18:40:18,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130806609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:18,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:18,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:18,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159721589] [2024-06-27 18:40:18,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:18,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:18,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:18,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:18,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:18,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:40:18,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 215 transitions, 2499 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:18,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:18,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:40:18,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:19,853 INFO L124 PetriNetUnfolderBase]: 4725/7518 cut-off events. [2024-06-27 18:40:19,854 INFO L125 PetriNetUnfolderBase]: For 131914/131922 co-relation queries the response was YES. [2024-06-27 18:40:19,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40948 conditions, 7518 events. 4725/7518 cut-off events. For 131914/131922 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 46232 event pairs, 1347 based on Foata normal form. 18/7331 useless extension candidates. Maximal degree in co-relation 40880. Up to 5847 conditions per place. [2024-06-27 18:40:19,931 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 190 selfloop transitions, 75 changer transitions 0/273 dead transitions. [2024-06-27 18:40:19,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 273 transitions, 3295 flow [2024-06-27 18:40:19,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:19,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:19,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-27 18:40:19,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5407608695652174 [2024-06-27 18:40:19,933 INFO L175 Difference]: Start difference. First operand has 148 places, 215 transitions, 2499 flow. Second operand 8 states and 199 transitions. [2024-06-27 18:40:19,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 273 transitions, 3295 flow [2024-06-27 18:40:20,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 273 transitions, 3181 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-27 18:40:20,115 INFO L231 Difference]: Finished difference. Result has 154 places, 219 transitions, 2631 flow [2024-06-27 18:40:20,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2385, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2631, PETRI_PLACES=154, PETRI_TRANSITIONS=219} [2024-06-27 18:40:20,115 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 102 predicate places. [2024-06-27 18:40:20,115 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 219 transitions, 2631 flow [2024-06-27 18:40:20,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:20,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:20,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:20,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:40:20,116 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:20,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:20,116 INFO L85 PathProgramCache]: Analyzing trace with hash -328572413, now seen corresponding path program 1 times [2024-06-27 18:40:20,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:20,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469632962] [2024-06-27 18:40:20,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:20,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:20,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:20,544 INFO 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 18:40:20,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:20,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469632962] [2024-06-27 18:40:20,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469632962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:20,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:20,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:40:20,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756105097] [2024-06-27 18:40:20,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:20,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:40:20,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:20,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:40:20,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:40:20,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:40:20,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 219 transitions, 2631 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 18:40:20,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:20,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:40:20,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:21,659 INFO L124 PetriNetUnfolderBase]: 4765/7585 cut-off events. [2024-06-27 18:40:21,660 INFO L125 PetriNetUnfolderBase]: For 133599/133615 co-relation queries the response was YES. [2024-06-27 18:40:21,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41791 conditions, 7585 events. 4765/7585 cut-off events. For 133599/133615 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 46703 event pairs, 1576 based on Foata normal form. 18/7398 useless extension candidates. Maximal degree in co-relation 41720. Up to 6649 conditions per place. [2024-06-27 18:40:21,731 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 232 selfloop transitions, 43 changer transitions 0/283 dead transitions. [2024-06-27 18:40:21,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 283 transitions, 3853 flow [2024-06-27 18:40:21,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:40:21,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:40:21,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-27 18:40:21,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5031055900621118 [2024-06-27 18:40:21,733 INFO L175 Difference]: Start difference. First operand has 154 places, 219 transitions, 2631 flow. Second operand 7 states and 162 transitions. [2024-06-27 18:40:21,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 283 transitions, 3853 flow [2024-06-27 18:40:21,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 283 transitions, 3703 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-27 18:40:21,940 INFO L231 Difference]: Finished difference. Result has 159 places, 249 transitions, 3215 flow [2024-06-27 18:40:21,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2501, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3215, PETRI_PLACES=159, PETRI_TRANSITIONS=249} [2024-06-27 18:40:21,941 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 107 predicate places. [2024-06-27 18:40:21,941 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 249 transitions, 3215 flow [2024-06-27 18:40:21,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 18:40:21,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:21,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:21,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:40:21,942 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:21,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:21,942 INFO L85 PathProgramCache]: Analyzing trace with hash -716028403, now seen corresponding path program 3 times [2024-06-27 18:40:21,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:21,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651591537] [2024-06-27 18:40:21,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:21,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:22,462 INFO 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 18:40:22,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:22,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651591537] [2024-06-27 18:40:22,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651591537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:22,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:22,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:22,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437683399] [2024-06-27 18:40:22,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:22,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:22,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:22,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:22,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:22,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:40:22,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 249 transitions, 3215 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:22,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:22,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:40:22,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:23,842 INFO L124 PetriNetUnfolderBase]: 4991/7952 cut-off events. [2024-06-27 18:40:23,842 INFO L125 PetriNetUnfolderBase]: For 154819/154839 co-relation queries the response was YES. [2024-06-27 18:40:23,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45932 conditions, 7952 events. 4991/7952 cut-off events. For 154819/154839 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 49470 event pairs, 1130 based on Foata normal form. 32/7780 useless extension candidates. Maximal degree in co-relation 45857. Up to 6142 conditions per place. [2024-06-27 18:40:23,919 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 213 selfloop transitions, 92 changer transitions 0/313 dead transitions. [2024-06-27 18:40:23,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 313 transitions, 4272 flow [2024-06-27 18:40:23,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:23,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:23,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-27 18:40:23,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5543478260869565 [2024-06-27 18:40:23,921 INFO L175 Difference]: Start difference. First operand has 159 places, 249 transitions, 3215 flow. Second operand 8 states and 204 transitions. [2024-06-27 18:40:23,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 313 transitions, 4272 flow [2024-06-27 18:40:24,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 313 transitions, 4188 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-27 18:40:24,133 INFO L231 Difference]: Finished difference. Result has 165 places, 254 transitions, 3452 flow [2024-06-27 18:40:24,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3131, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3452, PETRI_PLACES=165, PETRI_TRANSITIONS=254} [2024-06-27 18:40:24,134 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 113 predicate places. [2024-06-27 18:40:24,134 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 254 transitions, 3452 flow [2024-06-27 18:40:24,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:24,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:24,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:24,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:40:24,134 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:24,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:24,135 INFO L85 PathProgramCache]: Analyzing trace with hash -710518153, now seen corresponding path program 4 times [2024-06-27 18:40:24,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:24,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335962544] [2024-06-27 18:40:24,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:24,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:24,661 INFO 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 18:40:24,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:24,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335962544] [2024-06-27 18:40:24,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335962544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:24,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:24,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:24,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373352886] [2024-06-27 18:40:24,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:24,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:24,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:24,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:24,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:24,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:40:24,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 254 transitions, 3452 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:24,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:24,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:40:24,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:26,068 INFO L124 PetriNetUnfolderBase]: 5145/8184 cut-off events. [2024-06-27 18:40:26,068 INFO L125 PetriNetUnfolderBase]: For 173098/173106 co-relation queries the response was YES. [2024-06-27 18:40:26,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48269 conditions, 8184 events. 5145/8184 cut-off events. For 173098/173106 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 51179 event pairs, 1498 based on Foata normal form. 22/8000 useless extension candidates. Maximal degree in co-relation 48192. Up to 6711 conditions per place. [2024-06-27 18:40:26,153 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 209 selfloop transitions, 88 changer transitions 0/305 dead transitions. [2024-06-27 18:40:26,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 305 transitions, 4298 flow [2024-06-27 18:40:26,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:26,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:26,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-27 18:40:26,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.529891304347826 [2024-06-27 18:40:26,154 INFO L175 Difference]: Start difference. First operand has 165 places, 254 transitions, 3452 flow. Second operand 8 states and 195 transitions. [2024-06-27 18:40:26,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 305 transitions, 4298 flow [2024-06-27 18:40:26,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 305 transitions, 4152 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-27 18:40:26,389 INFO L231 Difference]: Finished difference. Result has 169 places, 256 transitions, 3552 flow [2024-06-27 18:40:26,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3308, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3552, PETRI_PLACES=169, PETRI_TRANSITIONS=256} [2024-06-27 18:40:26,390 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 117 predicate places. [2024-06-27 18:40:26,390 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 256 transitions, 3552 flow [2024-06-27 18:40:26,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:26,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:26,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:26,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:40:26,390 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:26,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:26,391 INFO L85 PathProgramCache]: Analyzing trace with hash -425676073, now seen corresponding path program 5 times [2024-06-27 18:40:26,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:26,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279311376] [2024-06-27 18:40:26,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:26,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:26,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:26,913 INFO 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 18:40:26,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:26,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279311376] [2024-06-27 18:40:26,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279311376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:26,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:26,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:26,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971211566] [2024-06-27 18:40:26,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:26,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:26,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:26,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:26,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:26,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:40:26,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 256 transitions, 3552 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:26,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:26,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:40:26,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:28,386 INFO L124 PetriNetUnfolderBase]: 5299/8423 cut-off events. [2024-06-27 18:40:28,386 INFO L125 PetriNetUnfolderBase]: For 183058/183078 co-relation queries the response was YES. [2024-06-27 18:40:28,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50160 conditions, 8423 events. 5299/8423 cut-off events. For 183058/183078 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 52841 event pairs, 1506 based on Foata normal form. 36/8254 useless extension candidates. Maximal degree in co-relation 50081. Up to 6945 conditions per place. [2024-06-27 18:40:28,466 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 213 selfloop transitions, 91 changer transitions 0/312 dead transitions. [2024-06-27 18:40:28,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 312 transitions, 4438 flow [2024-06-27 18:40:28,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:28,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:28,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-27 18:40:28,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5407608695652174 [2024-06-27 18:40:28,467 INFO L175 Difference]: Start difference. First operand has 169 places, 256 transitions, 3552 flow. Second operand 8 states and 199 transitions. [2024-06-27 18:40:28,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 312 transitions, 4438 flow [2024-06-27 18:40:28,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 312 transitions, 4234 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 18:40:28,731 INFO L231 Difference]: Finished difference. Result has 171 places, 258 transitions, 3602 flow [2024-06-27 18:40:28,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3348, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3602, PETRI_PLACES=171, PETRI_TRANSITIONS=258} [2024-06-27 18:40:28,732 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 119 predicate places. [2024-06-27 18:40:28,732 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 258 transitions, 3602 flow [2024-06-27 18:40:28,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:28,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:28,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:28,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:40:28,732 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:28,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:28,733 INFO L85 PathProgramCache]: Analyzing trace with hash -420098491, now seen corresponding path program 1 times [2024-06-27 18:40:28,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:28,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263494947] [2024-06-27 18:40:28,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:28,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:29,432 INFO 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 18:40:29,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:29,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263494947] [2024-06-27 18:40:29,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263494947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:29,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:29,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:29,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775834106] [2024-06-27 18:40:29,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:29,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:29,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:29,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:29,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:29,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:40:29,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 258 transitions, 3602 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:29,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:29,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:40:29,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:30,996 INFO L124 PetriNetUnfolderBase]: 5385/8569 cut-off events. [2024-06-27 18:40:30,997 INFO L125 PetriNetUnfolderBase]: For 186255/186263 co-relation queries the response was YES. [2024-06-27 18:40:31,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50905 conditions, 8569 events. 5385/8569 cut-off events. For 186255/186263 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 54116 event pairs, 1500 based on Foata normal form. 14/8376 useless extension candidates. Maximal degree in co-relation 50825. Up to 6493 conditions per place. [2024-06-27 18:40:31,062 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 207 selfloop transitions, 96 changer transitions 0/311 dead transitions. [2024-06-27 18:40:31,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 311 transitions, 4468 flow [2024-06-27 18:40:31,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:31,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:31,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 18:40:31,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532608695652174 [2024-06-27 18:40:31,063 INFO L175 Difference]: Start difference. First operand has 171 places, 258 transitions, 3602 flow. Second operand 8 states and 196 transitions. [2024-06-27 18:40:31,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 311 transitions, 4468 flow [2024-06-27 18:40:31,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 311 transitions, 4254 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 18:40:31,280 INFO L231 Difference]: Finished difference. Result has 173 places, 260 transitions, 3648 flow [2024-06-27 18:40:31,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3388, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3648, PETRI_PLACES=173, PETRI_TRANSITIONS=260} [2024-06-27 18:40:31,281 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 121 predicate places. [2024-06-27 18:40:31,281 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 260 transitions, 3648 flow [2024-06-27 18:40:31,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:31,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:31,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:31,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:40:31,282 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:31,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:31,282 INFO L85 PathProgramCache]: Analyzing trace with hash 645968564, now seen corresponding path program 1 times [2024-06-27 18:40:31,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:31,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553597356] [2024-06-27 18:40:31,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:31,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:31,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:31,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:31,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553597356] [2024-06-27 18:40:31,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553597356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:31,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:31,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:40:31,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291585252] [2024-06-27 18:40:31,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:31,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:40:31,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:31,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:40:31,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:40:31,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:40:31,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 260 transitions, 3648 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 18:40:31,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:31,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:40:31,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:33,090 INFO L124 PetriNetUnfolderBase]: 5405/8586 cut-off events. [2024-06-27 18:40:33,090 INFO L125 PetriNetUnfolderBase]: For 183012/183026 co-relation queries the response was YES. [2024-06-27 18:40:33,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50938 conditions, 8586 events. 5405/8586 cut-off events. For 183012/183026 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 54059 event pairs, 1763 based on Foata normal form. 15/8396 useless extension candidates. Maximal degree in co-relation 50857. Up to 7796 conditions per place. [2024-06-27 18:40:33,171 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 269 selfloop transitions, 18 changer transitions 0/295 dead transitions. [2024-06-27 18:40:33,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 295 transitions, 4422 flow [2024-06-27 18:40:33,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:40:33,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:40:33,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-06-27 18:40:33,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4751552795031056 [2024-06-27 18:40:33,172 INFO L175 Difference]: Start difference. First operand has 173 places, 260 transitions, 3648 flow. Second operand 7 states and 153 transitions. [2024-06-27 18:40:33,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 295 transitions, 4422 flow [2024-06-27 18:40:33,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 295 transitions, 4194 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 18:40:33,390 INFO L231 Difference]: Finished difference. Result has 174 places, 263 transitions, 3518 flow [2024-06-27 18:40:33,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3420, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3518, PETRI_PLACES=174, PETRI_TRANSITIONS=263} [2024-06-27 18:40:33,390 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 122 predicate places. [2024-06-27 18:40:33,391 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 263 transitions, 3518 flow [2024-06-27 18:40:33,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 18:40:33,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:33,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:33,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:40:33,391 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:33,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:33,392 INFO L85 PathProgramCache]: Analyzing trace with hash -328272953, now seen corresponding path program 2 times [2024-06-27 18:40:33,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:33,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020629532] [2024-06-27 18:40:33,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:33,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:33,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:33,845 INFO 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 18:40:33,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:33,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020629532] [2024-06-27 18:40:33,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020629532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:33,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:33,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:40:33,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337060319] [2024-06-27 18:40:33,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:33,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:40:33,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:33,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:40:33,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:40:33,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:40:33,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 263 transitions, 3518 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 18:40:33,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:33,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:40:33,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:35,128 INFO L124 PetriNetUnfolderBase]: 5493/8731 cut-off events. [2024-06-27 18:40:35,128 INFO L125 PetriNetUnfolderBase]: For 186815/186823 co-relation queries the response was YES. [2024-06-27 18:40:35,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51604 conditions, 8731 events. 5493/8731 cut-off events. For 186815/186823 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 55142 event pairs, 1779 based on Foata normal form. 8/8531 useless extension candidates. Maximal degree in co-relation 51522. Up to 7639 conditions per place. [2024-06-27 18:40:35,209 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 247 selfloop transitions, 46 changer transitions 0/301 dead transitions. [2024-06-27 18:40:35,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 301 transitions, 4414 flow [2024-06-27 18:40:35,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:40:35,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:40:35,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-27 18:40:35,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4968944099378882 [2024-06-27 18:40:35,210 INFO L175 Difference]: Start difference. First operand has 174 places, 263 transitions, 3518 flow. Second operand 7 states and 160 transitions. [2024-06-27 18:40:35,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 301 transitions, 4414 flow [2024-06-27 18:40:35,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 301 transitions, 4348 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 18:40:35,425 INFO L231 Difference]: Finished difference. Result has 177 places, 271 transitions, 3687 flow [2024-06-27 18:40:35,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3452, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3687, PETRI_PLACES=177, PETRI_TRANSITIONS=271} [2024-06-27 18:40:35,425 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 125 predicate places. [2024-06-27 18:40:35,425 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 271 transitions, 3687 flow [2024-06-27 18:40:35,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 18:40:35,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:35,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:35,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:40:35,426 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:35,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:35,426 INFO L85 PathProgramCache]: Analyzing trace with hash -698203417, now seen corresponding path program 6 times [2024-06-27 18:40:35,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:35,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378855913] [2024-06-27 18:40:35,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:35,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:35,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:35,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:35,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378855913] [2024-06-27 18:40:35,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378855913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:35,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:35,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:35,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544707664] [2024-06-27 18:40:35,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:35,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:35,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:35,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:35,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:36,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:40:36,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 271 transitions, 3687 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:36,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:36,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:40:36,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:37,512 INFO L124 PetriNetUnfolderBase]: 5457/8677 cut-off events. [2024-06-27 18:40:37,512 INFO L125 PetriNetUnfolderBase]: For 200661/200681 co-relation queries the response was YES. [2024-06-27 18:40:37,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52329 conditions, 8677 events. 5457/8677 cut-off events. For 200661/200681 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 54730 event pairs, 1566 based on Foata normal form. 29/8492 useless extension candidates. Maximal degree in co-relation 52245. Up to 7169 conditions per place. [2024-06-27 18:40:37,604 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 224 selfloop transitions, 85 changer transitions 0/317 dead transitions. [2024-06-27 18:40:37,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 317 transitions, 4507 flow [2024-06-27 18:40:37,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:37,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:37,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 18:40:37,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163043478260869 [2024-06-27 18:40:37,606 INFO L175 Difference]: Start difference. First operand has 177 places, 271 transitions, 3687 flow. Second operand 8 states and 190 transitions. [2024-06-27 18:40:37,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 317 transitions, 4507 flow [2024-06-27 18:40:37,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 317 transitions, 4381 flow, removed 45 selfloop flow, removed 3 redundant places. [2024-06-27 18:40:37,954 INFO L231 Difference]: Finished difference. Result has 182 places, 272 transitions, 3767 flow [2024-06-27 18:40:37,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3573, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3767, PETRI_PLACES=182, PETRI_TRANSITIONS=272} [2024-06-27 18:40:37,955 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 130 predicate places. [2024-06-27 18:40:37,955 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 272 transitions, 3767 flow [2024-06-27 18:40:37,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:37,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:37,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:37,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:40:37,956 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:37,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:37,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1028099977, now seen corresponding path program 2 times [2024-06-27 18:40:37,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:37,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207325542] [2024-06-27 18:40:37,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:37,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:38,661 INFO 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 18:40:38,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:38,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207325542] [2024-06-27 18:40:38,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207325542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:38,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:38,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:38,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500818138] [2024-06-27 18:40:38,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:38,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:38,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:38,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:38,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:38,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:40:38,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 272 transitions, 3767 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:38,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:38,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:40:38,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:40,102 INFO L124 PetriNetUnfolderBase]: 5437/8653 cut-off events. [2024-06-27 18:40:40,102 INFO L125 PetriNetUnfolderBase]: For 191525/191545 co-relation queries the response was YES. [2024-06-27 18:40:40,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51810 conditions, 8653 events. 5437/8653 cut-off events. For 191525/191545 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 54672 event pairs, 1521 based on Foata normal form. 21/8458 useless extension candidates. Maximal degree in co-relation 51724. Up to 6993 conditions per place. [2024-06-27 18:40:40,192 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 222 selfloop transitions, 89 changer transitions 0/319 dead transitions. [2024-06-27 18:40:40,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 319 transitions, 4577 flow [2024-06-27 18:40:40,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:40,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:40,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-27 18:40:40,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-27 18:40:40,194 INFO L175 Difference]: Start difference. First operand has 182 places, 272 transitions, 3767 flow. Second operand 8 states and 192 transitions. [2024-06-27 18:40:40,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 319 transitions, 4577 flow [2024-06-27 18:40:40,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 319 transitions, 4385 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 18:40:40,603 INFO L231 Difference]: Finished difference. Result has 184 places, 272 transitions, 3760 flow [2024-06-27 18:40:40,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3575, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3760, PETRI_PLACES=184, PETRI_TRANSITIONS=272} [2024-06-27 18:40:40,603 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 132 predicate places. [2024-06-27 18:40:40,604 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 272 transitions, 3760 flow [2024-06-27 18:40:40,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:40,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:40,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:40,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:40:40,604 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:40,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:40,605 INFO L85 PathProgramCache]: Analyzing trace with hash -432290935, now seen corresponding path program 3 times [2024-06-27 18:40:40,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:40,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888762550] [2024-06-27 18:40:40,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:40,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:40,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:41,326 INFO 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 18:40:41,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:41,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888762550] [2024-06-27 18:40:41,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888762550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:41,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:41,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:41,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561726336] [2024-06-27 18:40:41,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:41,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:41,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:41,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:41,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:41,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:40:41,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 272 transitions, 3760 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:41,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:41,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:40:41,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:42,997 INFO L124 PetriNetUnfolderBase]: 5417/8617 cut-off events. [2024-06-27 18:40:42,997 INFO L125 PetriNetUnfolderBase]: For 188002/188022 co-relation queries the response was YES. [2024-06-27 18:40:43,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51155 conditions, 8617 events. 5417/8617 cut-off events. For 188002/188022 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 54343 event pairs, 1349 based on Foata normal form. 21/8424 useless extension candidates. Maximal degree in co-relation 51068. Up to 5995 conditions per place. [2024-06-27 18:40:43,098 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 207 selfloop transitions, 105 changer transitions 0/320 dead transitions. [2024-06-27 18:40:43,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 320 transitions, 4558 flow [2024-06-27 18:40:43,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:43,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:43,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 18:40:43,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163043478260869 [2024-06-27 18:40:43,100 INFO L175 Difference]: Start difference. First operand has 184 places, 272 transitions, 3760 flow. Second operand 8 states and 190 transitions. [2024-06-27 18:40:43,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 320 transitions, 4558 flow [2024-06-27 18:40:43,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 320 transitions, 4180 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 18:40:43,348 INFO L231 Difference]: Finished difference. Result has 182 places, 273 transitions, 3587 flow [2024-06-27 18:40:43,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3322, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3587, PETRI_PLACES=182, PETRI_TRANSITIONS=273} [2024-06-27 18:40:43,349 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 130 predicate places. [2024-06-27 18:40:43,349 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 273 transitions, 3587 flow [2024-06-27 18:40:43,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:43,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:43,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:43,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:40:43,349 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:43,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:43,350 INFO L85 PathProgramCache]: Analyzing trace with hash 795995631, now seen corresponding path program 3 times [2024-06-27 18:40:43,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:43,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824698053] [2024-06-27 18:40:43,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:43,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:43,882 INFO 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 18:40:43,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:43,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824698053] [2024-06-27 18:40:43,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824698053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:43,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:43,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:40:43,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227837266] [2024-06-27 18:40:43,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:43,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:40:43,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:43,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:40:43,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:40:43,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:40:43,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 273 transitions, 3587 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 18:40:43,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:43,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:40:43,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:45,260 INFO L124 PetriNetUnfolderBase]: 5460/8674 cut-off events. [2024-06-27 18:40:45,260 INFO L125 PetriNetUnfolderBase]: For 187841/187861 co-relation queries the response was YES. [2024-06-27 18:40:45,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50754 conditions, 8674 events. 5460/8674 cut-off events. For 187841/187861 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 54649 event pairs, 1716 based on Foata normal form. 11/8472 useless extension candidates. Maximal degree in co-relation 50668. Up to 7463 conditions per place. [2024-06-27 18:40:45,334 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 249 selfloop transitions, 58 changer transitions 0/315 dead transitions. [2024-06-27 18:40:45,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 315 transitions, 4667 flow [2024-06-27 18:40:45,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:40:45,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:40:45,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-27 18:40:45,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4937888198757764 [2024-06-27 18:40:45,335 INFO L175 Difference]: Start difference. First operand has 182 places, 273 transitions, 3587 flow. Second operand 7 states and 159 transitions. [2024-06-27 18:40:45,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 315 transitions, 4667 flow [2024-06-27 18:40:45,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 315 transitions, 4424 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 18:40:45,595 INFO L231 Difference]: Finished difference. Result has 185 places, 286 transitions, 3676 flow [2024-06-27 18:40:45,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3344, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3676, PETRI_PLACES=185, PETRI_TRANSITIONS=286} [2024-06-27 18:40:45,596 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 133 predicate places. [2024-06-27 18:40:45,596 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 286 transitions, 3676 flow [2024-06-27 18:40:45,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 18:40:45,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:45,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:45,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:40:45,597 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:45,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:45,597 INFO L85 PathProgramCache]: Analyzing trace with hash 795996034, now seen corresponding path program 2 times [2024-06-27 18:40:45,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:45,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077683482] [2024-06-27 18:40:45,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:45,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:45,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:46,052 INFO 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 18:40:46,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:46,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077683482] [2024-06-27 18:40:46,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077683482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:46,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:46,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:40:46,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476391923] [2024-06-27 18:40:46,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:46,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:40:46,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:46,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:40:46,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:40:46,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:40:46,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 286 transitions, 3676 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 18:40:46,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:46,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:40:46,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:47,265 INFO L124 PetriNetUnfolderBase]: 5488/8727 cut-off events. [2024-06-27 18:40:47,266 INFO L125 PetriNetUnfolderBase]: For 197090/197126 co-relation queries the response was YES. [2024-06-27 18:40:47,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52000 conditions, 8727 events. 5488/8727 cut-off events. For 197090/197126 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 55020 event pairs, 1710 based on Foata normal form. 29/8541 useless extension candidates. Maximal degree in co-relation 51911. Up to 7829 conditions per place. [2024-06-27 18:40:47,353 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 285 selfloop transitions, 30 changer transitions 0/323 dead transitions. [2024-06-27 18:40:47,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 323 transitions, 4688 flow [2024-06-27 18:40:47,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:40:47,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:40:47,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-06-27 18:40:47,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4751552795031056 [2024-06-27 18:40:47,354 INFO L175 Difference]: Start difference. First operand has 185 places, 286 transitions, 3676 flow. Second operand 7 states and 153 transitions. [2024-06-27 18:40:47,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 323 transitions, 4688 flow [2024-06-27 18:40:47,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 323 transitions, 4582 flow, removed 37 selfloop flow, removed 2 redundant places. [2024-06-27 18:40:47,662 INFO L231 Difference]: Finished difference. Result has 190 places, 292 transitions, 3770 flow [2024-06-27 18:40:47,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3570, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3770, PETRI_PLACES=190, PETRI_TRANSITIONS=292} [2024-06-27 18:40:47,663 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 138 predicate places. [2024-06-27 18:40:47,663 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 292 transitions, 3770 flow [2024-06-27 18:40:47,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 18:40:47,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:47,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:47,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:40:47,664 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:47,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:47,664 INFO L85 PathProgramCache]: Analyzing trace with hash 796441504, now seen corresponding path program 3 times [2024-06-27 18:40:47,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:47,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770169139] [2024-06-27 18:40:47,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:47,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:48,151 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 18:40:48,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:48,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770169139] [2024-06-27 18:40:48,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770169139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:48,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:48,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:40:48,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113139294] [2024-06-27 18:40:48,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:48,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:40:48,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:48,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:40:48,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:40:48,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:40:48,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 292 transitions, 3770 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 18:40:48,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:48,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:40:48,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:49,457 INFO L124 PetriNetUnfolderBase]: 5485/8717 cut-off events. [2024-06-27 18:40:49,457 INFO L125 PetriNetUnfolderBase]: For 200852/200854 co-relation queries the response was YES. [2024-06-27 18:40:49,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51614 conditions, 8717 events. 5485/8717 cut-off events. For 200852/200854 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 54943 event pairs, 1733 based on Foata normal form. 1/8504 useless extension candidates. Maximal degree in co-relation 51523. Up to 7905 conditions per place. [2024-06-27 18:40:49,550 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 296 selfloop transitions, 15 changer transitions 0/319 dead transitions. [2024-06-27 18:40:49,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 319 transitions, 4546 flow [2024-06-27 18:40:49,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:40:49,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:40:49,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 148 transitions. [2024-06-27 18:40:49,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45962732919254656 [2024-06-27 18:40:49,551 INFO L175 Difference]: Start difference. First operand has 190 places, 292 transitions, 3770 flow. Second operand 7 states and 148 transitions. [2024-06-27 18:40:49,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 319 transitions, 4546 flow [2024-06-27 18:40:49,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 319 transitions, 4431 flow, removed 45 selfloop flow, removed 3 redundant places. [2024-06-27 18:40:49,852 INFO L231 Difference]: Finished difference. Result has 194 places, 292 transitions, 3691 flow [2024-06-27 18:40:49,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3655, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3691, PETRI_PLACES=194, PETRI_TRANSITIONS=292} [2024-06-27 18:40:49,852 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 142 predicate places. [2024-06-27 18:40:49,852 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 292 transitions, 3691 flow [2024-06-27 18:40:49,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 18:40:49,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:49,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:49,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:40:49,853 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:49,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:49,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1953266427, now seen corresponding path program 1 times [2024-06-27 18:40:49,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:49,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964287335] [2024-06-27 18:40:49,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:49,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:49,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:50,294 INFO 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 18:40:50,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:50,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964287335] [2024-06-27 18:40:50,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964287335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:50,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:50,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:40:50,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171860726] [2024-06-27 18:40:50,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:50,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:40:50,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:50,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:40:50,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:40:50,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:40:50,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 292 transitions, 3691 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:50,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:50,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:40:50,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:52,017 INFO L124 PetriNetUnfolderBase]: 5281/8496 cut-off events. [2024-06-27 18:40:52,017 INFO L125 PetriNetUnfolderBase]: For 211244/211347 co-relation queries the response was YES. [2024-06-27 18:40:52,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50889 conditions, 8496 events. 5281/8496 cut-off events. For 211244/211347 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 54577 event pairs, 1501 based on Foata normal form. 12/8246 useless extension candidates. Maximal degree in co-relation 50796. Up to 7455 conditions per place. [2024-06-27 18:40:52,139 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 282 selfloop transitions, 29 changer transitions 0/329 dead transitions. [2024-06-27 18:40:52,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 329 transitions, 4511 flow [2024-06-27 18:40:52,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:40:52,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:40:52,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-06-27 18:40:52,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:40:52,141 INFO L175 Difference]: Start difference. First operand has 194 places, 292 transitions, 3691 flow. Second operand 7 states and 161 transitions. [2024-06-27 18:40:52,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 329 transitions, 4511 flow [2024-06-27 18:40:52,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 329 transitions, 4471 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 18:40:52,552 INFO L231 Difference]: Finished difference. Result has 196 places, 301 transitions, 3833 flow [2024-06-27 18:40:52,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3651, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3833, PETRI_PLACES=196, PETRI_TRANSITIONS=301} [2024-06-27 18:40:52,555 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 144 predicate places. [2024-06-27 18:40:52,555 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 301 transitions, 3833 flow [2024-06-27 18:40:52,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:52,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:52,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:52,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:40:52,556 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:52,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:52,556 INFO L85 PathProgramCache]: Analyzing trace with hash 310991585, now seen corresponding path program 2 times [2024-06-27 18:40:52,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:52,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235356103] [2024-06-27 18:40:52,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:52,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:53,048 INFO 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 18:40:53,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:53,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235356103] [2024-06-27 18:40:53,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235356103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:53,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:53,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:40:53,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701868862] [2024-06-27 18:40:53,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:53,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:40:53,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:53,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:40:53,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:40:53,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:40:53,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 301 transitions, 3833 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:53,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:53,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:40:53,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:54,446 INFO L124 PetriNetUnfolderBase]: 5471/8749 cut-off events. [2024-06-27 18:40:54,446 INFO L125 PetriNetUnfolderBase]: For 233181/233282 co-relation queries the response was YES. [2024-06-27 18:40:54,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54585 conditions, 8749 events. 5471/8749 cut-off events. For 233181/233282 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 56008 event pairs, 1522 based on Foata normal form. 15/8503 useless extension candidates. Maximal degree in co-relation 54490. Up to 7572 conditions per place. [2024-06-27 18:40:54,543 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 289 selfloop transitions, 38 changer transitions 0/345 dead transitions. [2024-06-27 18:40:54,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 345 transitions, 4878 flow [2024-06-27 18:40:54,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:40:54,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:40:54,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-27 18:40:54,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5062111801242236 [2024-06-27 18:40:54,544 INFO L175 Difference]: Start difference. First operand has 196 places, 301 transitions, 3833 flow. Second operand 7 states and 163 transitions. [2024-06-27 18:40:54,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 345 transitions, 4878 flow [2024-06-27 18:40:54,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 345 transitions, 4789 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-27 18:40:54,883 INFO L231 Difference]: Finished difference. Result has 201 places, 315 transitions, 4036 flow [2024-06-27 18:40:54,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3744, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4036, PETRI_PLACES=201, PETRI_TRANSITIONS=315} [2024-06-27 18:40:54,883 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 149 predicate places. [2024-06-27 18:40:54,883 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 315 transitions, 4036 flow [2024-06-27 18:40:54,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:54,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:54,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:54,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:40:54,884 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:54,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:54,884 INFO L85 PathProgramCache]: Analyzing trace with hash 796180329, now seen corresponding path program 3 times [2024-06-27 18:40:54,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:54,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168769772] [2024-06-27 18:40:54,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:54,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:55,352 INFO 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 18:40:55,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:55,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168769772] [2024-06-27 18:40:55,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168769772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:55,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:55,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:40:55,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380735652] [2024-06-27 18:40:55,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:55,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:40:55,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:55,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:40:55,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:40:55,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:40:55,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 315 transitions, 4036 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:55,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:55,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:40:55,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:56,903 INFO L124 PetriNetUnfolderBase]: 5513/8798 cut-off events. [2024-06-27 18:40:56,903 INFO L125 PetriNetUnfolderBase]: For 244285/244401 co-relation queries the response was YES. [2024-06-27 18:40:56,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56587 conditions, 8798 events. 5513/8798 cut-off events. For 244285/244401 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 56132 event pairs, 1506 based on Foata normal form. 17/8545 useless extension candidates. Maximal degree in co-relation 56490. Up to 7499 conditions per place. [2024-06-27 18:40:56,989 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 297 selfloop transitions, 58 changer transitions 0/373 dead transitions. [2024-06-27 18:40:56,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 373 transitions, 5413 flow [2024-06-27 18:40:56,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:40:56,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:40:56,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-27 18:40:56,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515527950310559 [2024-06-27 18:40:56,990 INFO L175 Difference]: Start difference. First operand has 201 places, 315 transitions, 4036 flow. Second operand 7 states and 166 transitions. [2024-06-27 18:40:56,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 373 transitions, 5413 flow [2024-06-27 18:40:57,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 373 transitions, 5319 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-06-27 18:40:57,346 INFO L231 Difference]: Finished difference. Result has 207 places, 340 transitions, 4465 flow [2024-06-27 18:40:57,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3942, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4465, PETRI_PLACES=207, PETRI_TRANSITIONS=340} [2024-06-27 18:40:57,347 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 155 predicate places. [2024-06-27 18:40:57,347 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 340 transitions, 4465 flow [2024-06-27 18:40:57,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:57,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:57,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:57,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:40:57,347 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:57,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:57,347 INFO L85 PathProgramCache]: Analyzing trace with hash 796457376, now seen corresponding path program 1 times [2024-06-27 18:40:57,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:57,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990647991] [2024-06-27 18:40:57,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:57,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:57,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:58,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:58,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:58,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990647991] [2024-06-27 18:40:58,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990647991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:58,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:58,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:58,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498425692] [2024-06-27 18:40:58,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:58,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:58,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:58,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:58,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:58,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:40:58,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 340 transitions, 4465 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:40:58,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:58,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:40:58,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:59,651 INFO L124 PetriNetUnfolderBase]: 5774/9094 cut-off events. [2024-06-27 18:40:59,651 INFO L125 PetriNetUnfolderBase]: For 249165/249167 co-relation queries the response was YES. [2024-06-27 18:40:59,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59425 conditions, 9094 events. 5774/9094 cut-off events. For 249165/249167 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 56827 event pairs, 1670 based on Foata normal form. 2/8883 useless extension candidates. Maximal degree in co-relation 59324. Up to 8270 conditions per place. [2024-06-27 18:40:59,753 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 341 selfloop transitions, 26 changer transitions 0/375 dead transitions. [2024-06-27 18:40:59,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 375 transitions, 5459 flow [2024-06-27 18:40:59,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:59,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:59,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 168 transitions. [2024-06-27 18:40:59,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45652173913043476 [2024-06-27 18:40:59,755 INFO L175 Difference]: Start difference. First operand has 207 places, 340 transitions, 4465 flow. Second operand 8 states and 168 transitions. [2024-06-27 18:40:59,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 375 transitions, 5459 flow [2024-06-27 18:41:00,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 375 transitions, 5323 flow, removed 58 selfloop flow, removed 2 redundant places. [2024-06-27 18:41:00,140 INFO L231 Difference]: Finished difference. Result has 213 places, 343 transitions, 4482 flow [2024-06-27 18:41:00,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4341, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4482, PETRI_PLACES=213, PETRI_TRANSITIONS=343} [2024-06-27 18:41:00,141 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 161 predicate places. [2024-06-27 18:41:00,141 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 343 transitions, 4482 flow [2024-06-27 18:41:00,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:41:00,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:00,141 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 18:41:00,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:41:00,141 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:00,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:00,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1459105260, now seen corresponding path program 1 times [2024-06-27 18:41:00,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:00,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703954228] [2024-06-27 18:41:00,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:00,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:00,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:00,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:00,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:00,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703954228] [2024-06-27 18:41:00,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703954228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:00,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:00,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:41:00,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154005348] [2024-06-27 18:41:00,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:00,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:41:00,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:00,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:41:00,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:41:00,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:41:00,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 343 transitions, 4482 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:41:00,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:00,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:41:00,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:02,180 INFO L124 PetriNetUnfolderBase]: 5814/9170 cut-off events. [2024-06-27 18:41:02,180 INFO L125 PetriNetUnfolderBase]: For 253474/253496 co-relation queries the response was YES. [2024-06-27 18:41:02,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59169 conditions, 9170 events. 5814/9170 cut-off events. For 253474/253496 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 57547 event pairs, 1710 based on Foata normal form. 24/8978 useless extension candidates. Maximal degree in co-relation 59066. Up to 8136 conditions per place. [2024-06-27 18:41:02,283 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 332 selfloop transitions, 47 changer transitions 0/387 dead transitions. [2024-06-27 18:41:02,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 387 transitions, 5514 flow [2024-06-27 18:41:02,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:41:02,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:41:02,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-27 18:41:02,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945652173913043 [2024-06-27 18:41:02,284 INFO L175 Difference]: Start difference. First operand has 213 places, 343 transitions, 4482 flow. Second operand 8 states and 182 transitions. [2024-06-27 18:41:02,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 387 transitions, 5514 flow [2024-06-27 18:41:02,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 387 transitions, 5397 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-27 18:41:02,675 INFO L231 Difference]: Finished difference. Result has 215 places, 347 transitions, 4554 flow [2024-06-27 18:41:02,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4365, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4554, PETRI_PLACES=215, PETRI_TRANSITIONS=347} [2024-06-27 18:41:02,675 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 163 predicate places. [2024-06-27 18:41:02,675 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 347 transitions, 4554 flow [2024-06-27 18:41:02,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:41:02,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:02,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:02,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:41:02,676 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:02,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:02,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1620036720, now seen corresponding path program 1 times [2024-06-27 18:41:02,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:02,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472076641] [2024-06-27 18:41:02,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:02,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:03,095 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 18:41:03,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:03,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472076641] [2024-06-27 18:41:03,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472076641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:03,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:03,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:41:03,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182560462] [2024-06-27 18:41:03,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:03,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:41:03,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:03,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:41:03,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:41:03,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:41:03,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 347 transitions, 4554 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 18:41:03,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:03,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:41:03,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:04,553 INFO L124 PetriNetUnfolderBase]: 5854/9225 cut-off events. [2024-06-27 18:41:04,553 INFO L125 PetriNetUnfolderBase]: For 265387/265397 co-relation queries the response was YES. [2024-06-27 18:41:04,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60630 conditions, 9225 events. 5854/9225 cut-off events. For 265387/265397 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 57869 event pairs, 1713 based on Foata normal form. 10/9015 useless extension candidates. Maximal degree in co-relation 60526. Up to 8208 conditions per place. [2024-06-27 18:41:04,661 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 331 selfloop transitions, 44 changer transitions 0/383 dead transitions. [2024-06-27 18:41:04,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 383 transitions, 5512 flow [2024-06-27 18:41:04,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:41:04,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:41:04,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-27 18:41:04,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4906832298136646 [2024-06-27 18:41:04,662 INFO L175 Difference]: Start difference. First operand has 215 places, 347 transitions, 4554 flow. Second operand 7 states and 158 transitions. [2024-06-27 18:41:04,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 383 transitions, 5512 flow [2024-06-27 18:41:05,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 383 transitions, 5383 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-27 18:41:05,069 INFO L231 Difference]: Finished difference. Result has 217 places, 352 transitions, 4606 flow [2024-06-27 18:41:05,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4426, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4606, PETRI_PLACES=217, PETRI_TRANSITIONS=352} [2024-06-27 18:41:05,069 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 165 predicate places. [2024-06-27 18:41:05,069 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 352 transitions, 4606 flow [2024-06-27 18:41:05,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 18:41:05,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:05,070 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 18:41:05,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:41:05,070 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:05,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:05,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1619799570, now seen corresponding path program 2 times [2024-06-27 18:41:05,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:05,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541256997] [2024-06-27 18:41:05,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:05,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:05,525 INFO 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 18:41:05,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:05,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541256997] [2024-06-27 18:41:05,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541256997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:05,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:05,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:41:05,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034648063] [2024-06-27 18:41:05,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:05,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:41:05,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:05,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:41:05,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:41:05,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:41:05,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 352 transitions, 4606 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 18:41:05,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:05,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:41:05,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:07,077 INFO L124 PetriNetUnfolderBase]: 5871/9248 cut-off events. [2024-06-27 18:41:07,077 INFO L125 PetriNetUnfolderBase]: For 272056/272066 co-relation queries the response was YES. [2024-06-27 18:41:07,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60753 conditions, 9248 events. 5871/9248 cut-off events. For 272056/272066 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 58015 event pairs, 1714 based on Foata normal form. 10/9039 useless extension candidates. Maximal degree in co-relation 60648. Up to 8100 conditions per place. [2024-06-27 18:41:07,191 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 324 selfloop transitions, 53 changer transitions 0/385 dead transitions. [2024-06-27 18:41:07,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 385 transitions, 5670 flow [2024-06-27 18:41:07,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:41:07,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:41:07,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-27 18:41:07,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4937888198757764 [2024-06-27 18:41:07,192 INFO L175 Difference]: Start difference. First operand has 217 places, 352 transitions, 4606 flow. Second operand 7 states and 159 transitions. [2024-06-27 18:41:07,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 385 transitions, 5670 flow [2024-06-27 18:41:07,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 385 transitions, 5600 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-27 18:41:07,599 INFO L231 Difference]: Finished difference. Result has 221 places, 355 transitions, 4713 flow [2024-06-27 18:41:07,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4536, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4713, PETRI_PLACES=221, PETRI_TRANSITIONS=355} [2024-06-27 18:41:07,600 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 169 predicate places. [2024-06-27 18:41:07,600 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 355 transitions, 4713 flow [2024-06-27 18:41:07,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 18:41:07,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:07,600 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 18:41:07,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:41:07,600 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:07,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:07,601 INFO L85 PathProgramCache]: Analyzing trace with hash 401530622, now seen corresponding path program 2 times [2024-06-27 18:41:07,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:07,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223990896] [2024-06-27 18:41:07,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:07,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:08,094 INFO 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 18:41:08,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:08,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223990896] [2024-06-27 18:41:08,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223990896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:08,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:08,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:41:08,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465541994] [2024-06-27 18:41:08,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:08,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:41:08,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:08,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:41:08,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:41:08,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:41:08,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 355 transitions, 4713 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:41:08,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:08,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:41:08,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:09,801 INFO L124 PetriNetUnfolderBase]: 5982/9414 cut-off events. [2024-06-27 18:41:09,801 INFO L125 PetriNetUnfolderBase]: For 288714/288724 co-relation queries the response was YES. [2024-06-27 18:41:09,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62649 conditions, 9414 events. 5982/9414 cut-off events. For 288714/288724 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 59202 event pairs, 1711 based on Foata normal form. 10/9206 useless extension candidates. Maximal degree in co-relation 62543. Up to 8083 conditions per place. [2024-06-27 18:41:09,896 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 331 selfloop transitions, 62 changer transitions 0/401 dead transitions. [2024-06-27 18:41:09,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 401 transitions, 6107 flow [2024-06-27 18:41:09,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:41:09,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:41:09,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-27 18:41:09,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945652173913043 [2024-06-27 18:41:09,898 INFO L175 Difference]: Start difference. First operand has 221 places, 355 transitions, 4713 flow. Second operand 8 states and 182 transitions. [2024-06-27 18:41:09,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 401 transitions, 6107 flow [2024-06-27 18:41:10,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 401 transitions, 5999 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-27 18:41:10,299 INFO L231 Difference]: Finished difference. Result has 226 places, 363 transitions, 4935 flow [2024-06-27 18:41:10,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4605, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4935, PETRI_PLACES=226, PETRI_TRANSITIONS=363} [2024-06-27 18:41:10,299 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 174 predicate places. [2024-06-27 18:41:10,300 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 363 transitions, 4935 flow [2024-06-27 18:41:10,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:41:10,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:10,300 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 18:41:10,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:41:10,300 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:10,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:10,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1619790642, now seen corresponding path program 1 times [2024-06-27 18:41:10,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:10,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103549041] [2024-06-27 18:41:10,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:10,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:10,902 INFO 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 18:41:10,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:10,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103549041] [2024-06-27 18:41:10,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103549041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:10,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:10,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:41:10,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333250130] [2024-06-27 18:41:10,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:10,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:41:10,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:10,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:41:10,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:41:10,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:41:10,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 363 transitions, 4935 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:41:10,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:10,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:41:10,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:12,524 INFO L124 PetriNetUnfolderBase]: 6002/9459 cut-off events. [2024-06-27 18:41:12,525 INFO L125 PetriNetUnfolderBase]: For 306142/306156 co-relation queries the response was YES. [2024-06-27 18:41:12,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64456 conditions, 9459 events. 6002/9459 cut-off events. For 306142/306156 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 59608 event pairs, 1707 based on Foata normal form. 15/9249 useless extension candidates. Maximal degree in co-relation 64348. Up to 8572 conditions per place. [2024-06-27 18:41:12,633 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 374 selfloop transitions, 22 changer transitions 0/404 dead transitions. [2024-06-27 18:41:12,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 404 transitions, 6021 flow [2024-06-27 18:41:12,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:41:12,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:41:12,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 172 transitions. [2024-06-27 18:41:12,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4673913043478261 [2024-06-27 18:41:12,634 INFO L175 Difference]: Start difference. First operand has 226 places, 363 transitions, 4935 flow. Second operand 8 states and 172 transitions. [2024-06-27 18:41:12,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 404 transitions, 6021 flow [2024-06-27 18:41:13,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 404 transitions, 5866 flow, removed 47 selfloop flow, removed 4 redundant places. [2024-06-27 18:41:13,304 INFO L231 Difference]: Finished difference. Result has 230 places, 367 transitions, 4939 flow [2024-06-27 18:41:13,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4780, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4939, PETRI_PLACES=230, PETRI_TRANSITIONS=367} [2024-06-27 18:41:13,304 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 178 predicate places. [2024-06-27 18:41:13,304 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 367 transitions, 4939 flow [2024-06-27 18:41:13,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:41:13,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:13,305 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 18:41:13,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:41:13,305 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:13,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:13,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1619803166, now seen corresponding path program 3 times [2024-06-27 18:41:13,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:13,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007771094] [2024-06-27 18:41:13,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:13,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:13,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:13,795 INFO 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 18:41:13,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:13,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007771094] [2024-06-27 18:41:13,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007771094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:13,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:13,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:41:13,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519834331] [2024-06-27 18:41:13,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:13,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:41:13,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:13,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:41:13,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:41:13,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:41:13,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 367 transitions, 4939 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:41:13,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:13,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:41:13,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:15,438 INFO L124 PetriNetUnfolderBase]: 6021/9485 cut-off events. [2024-06-27 18:41:15,438 INFO L125 PetriNetUnfolderBase]: For 316016/316026 co-relation queries the response was YES. [2024-06-27 18:41:15,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65126 conditions, 9485 events. 6021/9485 cut-off events. For 316016/316026 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 59839 event pairs, 1713 based on Foata normal form. 10/9273 useless extension candidates. Maximal degree in co-relation 65016. Up to 8132 conditions per place. [2024-06-27 18:41:15,555 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 333 selfloop transitions, 66 changer transitions 0/407 dead transitions. [2024-06-27 18:41:15,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 407 transitions, 6136 flow [2024-06-27 18:41:15,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:41:15,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:41:15,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-27 18:41:15,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945652173913043 [2024-06-27 18:41:15,556 INFO L175 Difference]: Start difference. First operand has 230 places, 367 transitions, 4939 flow. Second operand 8 states and 182 transitions. [2024-06-27 18:41:15,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 407 transitions, 6136 flow [2024-06-27 18:41:16,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 407 transitions, 6005 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-27 18:41:16,074 INFO L231 Difference]: Finished difference. Result has 232 places, 371 transitions, 5036 flow [2024-06-27 18:41:16,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4808, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5036, PETRI_PLACES=232, PETRI_TRANSITIONS=371} [2024-06-27 18:41:16,075 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 180 predicate places. [2024-06-27 18:41:16,075 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 371 transitions, 5036 flow [2024-06-27 18:41:16,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:41:16,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:16,075 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 18:41:16,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:41:16,075 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:16,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:16,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1216632530, now seen corresponding path program 3 times [2024-06-27 18:41:16,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:16,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437329937] [2024-06-27 18:41:16,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:16,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:16,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:16,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:16,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437329937] [2024-06-27 18:41:16,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437329937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:16,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:16,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:41:16,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490355869] [2024-06-27 18:41:16,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:16,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:41:16,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:16,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:41:16,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:41:16,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:41:16,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 371 transitions, 5036 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 18:41:16,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:16,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:41:16,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:18,122 INFO L124 PetriNetUnfolderBase]: 6014/9474 cut-off events. [2024-06-27 18:41:18,122 INFO L125 PetriNetUnfolderBase]: For 323485/323499 co-relation queries the response was YES. [2024-06-27 18:41:18,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65498 conditions, 9474 events. 6014/9474 cut-off events. For 323485/323499 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 59668 event pairs, 1747 based on Foata normal form. 4/9244 useless extension candidates. Maximal degree in co-relation 65387. Up to 8446 conditions per place. [2024-06-27 18:41:18,247 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 349 selfloop transitions, 44 changer transitions 0/401 dead transitions. [2024-06-27 18:41:18,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 401 transitions, 5958 flow [2024-06-27 18:41:18,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:41:18,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:41:18,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-27 18:41:18,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4813664596273292 [2024-06-27 18:41:18,248 INFO L175 Difference]: Start difference. First operand has 232 places, 371 transitions, 5036 flow. Second operand 7 states and 155 transitions. [2024-06-27 18:41:18,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 401 transitions, 5958 flow [2024-06-27 18:41:18,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 401 transitions, 5789 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-27 18:41:18,919 INFO L231 Difference]: Finished difference. Result has 234 places, 371 transitions, 4962 flow [2024-06-27 18:41:18,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4867, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4962, PETRI_PLACES=234, PETRI_TRANSITIONS=371} [2024-06-27 18:41:18,919 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 182 predicate places. [2024-06-27 18:41:18,919 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 371 transitions, 4962 flow [2024-06-27 18:41:18,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 18:41:18,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:18,920 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 18:41:18,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:41:18,920 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:18,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:18,920 INFO L85 PathProgramCache]: Analyzing trace with hash 578832208, now seen corresponding path program 4 times [2024-06-27 18:41:18,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:18,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355651998] [2024-06-27 18:41:18,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:18,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:19,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:19,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:19,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355651998] [2024-06-27 18:41:19,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355651998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:19,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:19,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:41:19,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141544963] [2024-06-27 18:41:19,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:19,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:41:19,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:19,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:41:19,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:41:19,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:41:19,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 371 transitions, 4962 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 18:41:19,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:19,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:41:19,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:21,010 INFO L124 PetriNetUnfolderBase]: 6034/9504 cut-off events. [2024-06-27 18:41:21,010 INFO L125 PetriNetUnfolderBase]: For 328736/328750 co-relation queries the response was YES. [2024-06-27 18:41:21,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65409 conditions, 9504 events. 6034/9504 cut-off events. For 328736/328750 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 59959 event pairs, 1733 based on Foata normal form. 4/9273 useless extension candidates. Maximal degree in co-relation 65297. Up to 8414 conditions per place. [2024-06-27 18:41:21,148 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 342 selfloop transitions, 55 changer transitions 0/405 dead transitions. [2024-06-27 18:41:21,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 405 transitions, 6003 flow [2024-06-27 18:41:21,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:41:21,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:41:21,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-27 18:41:21,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484472049689441 [2024-06-27 18:41:21,149 INFO L175 Difference]: Start difference. First operand has 234 places, 371 transitions, 4962 flow. Second operand 7 states and 156 transitions. [2024-06-27 18:41:21,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 405 transitions, 6003 flow [2024-06-27 18:41:21,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 405 transitions, 5781 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-27 18:41:21,952 INFO L231 Difference]: Finished difference. Result has 233 places, 375 transitions, 4944 flow [2024-06-27 18:41:21,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4740, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4944, PETRI_PLACES=233, PETRI_TRANSITIONS=375} [2024-06-27 18:41:21,953 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 181 predicate places. [2024-06-27 18:41:21,953 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 375 transitions, 4944 flow [2024-06-27 18:41:21,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 18:41:21,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:21,953 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 18:41:21,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:41:21,953 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:21,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:21,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1093934130, now seen corresponding path program 5 times [2024-06-27 18:41:21,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:21,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235366666] [2024-06-27 18:41:21,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:21,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:21,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:22,485 INFO 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 18:41:22,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:22,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235366666] [2024-06-27 18:41:22,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235366666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:22,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:22,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:41:22,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366405400] [2024-06-27 18:41:22,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:22,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:41:22,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:22,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:41:22,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:41:22,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:41:22,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 375 transitions, 4944 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 18:41:22,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:22,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:41:22,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:24,193 INFO L124 PetriNetUnfolderBase]: 6051/9512 cut-off events. [2024-06-27 18:41:24,193 INFO L125 PetriNetUnfolderBase]: For 335739/335761 co-relation queries the response was YES. [2024-06-27 18:41:24,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65664 conditions, 9512 events. 6051/9512 cut-off events. For 335739/335761 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 59844 event pairs, 1689 based on Foata normal form. 13/9300 useless extension candidates. Maximal degree in co-relation 65550. Up to 8205 conditions per place. [2024-06-27 18:41:24,293 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 327 selfloop transitions, 74 changer transitions 0/409 dead transitions. [2024-06-27 18:41:24,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 409 transitions, 6162 flow [2024-06-27 18:41:24,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:41:24,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:41:24,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-27 18:41:24,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4906832298136646 [2024-06-27 18:41:24,294 INFO L175 Difference]: Start difference. First operand has 233 places, 375 transitions, 4944 flow. Second operand 7 states and 158 transitions. [2024-06-27 18:41:24,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 409 transitions, 6162 flow [2024-06-27 18:41:24,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 409 transitions, 6045 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-27 18:41:24,885 INFO L231 Difference]: Finished difference. Result has 236 places, 378 transitions, 5039 flow [2024-06-27 18:41:24,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4827, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5039, PETRI_PLACES=236, PETRI_TRANSITIONS=378} [2024-06-27 18:41:24,885 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 184 predicate places. [2024-06-27 18:41:24,885 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 378 transitions, 5039 flow [2024-06-27 18:41:24,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 18:41:24,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:24,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:24,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:41:24,886 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:24,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:24,886 INFO L85 PathProgramCache]: Analyzing trace with hash 801169168, now seen corresponding path program 6 times [2024-06-27 18:41:24,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:24,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928579183] [2024-06-27 18:41:24,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:24,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:24,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:25,356 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 18:41:25,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:25,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928579183] [2024-06-27 18:41:25,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928579183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:25,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:25,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:41:25,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72741048] [2024-06-27 18:41:25,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:25,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:41:25,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:25,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:41:25,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:41:25,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:41:25,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 378 transitions, 5039 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 18:41:25,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:25,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:41:25,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:26,960 INFO L124 PetriNetUnfolderBase]: 6046/9500 cut-off events. [2024-06-27 18:41:26,960 INFO L125 PetriNetUnfolderBase]: For 340498/340520 co-relation queries the response was YES. [2024-06-27 18:41:27,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65860 conditions, 9500 events. 6046/9500 cut-off events. For 340498/340520 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 59805 event pairs, 1682 based on Foata normal form. 12/9289 useless extension candidates. Maximal degree in co-relation 65745. Up to 8200 conditions per place. [2024-06-27 18:41:27,080 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 323 selfloop transitions, 77 changer transitions 0/408 dead transitions. [2024-06-27 18:41:27,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 408 transitions, 6091 flow [2024-06-27 18:41:27,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:41:27,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:41:27,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-27 18:41:27,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484472049689441 [2024-06-27 18:41:27,081 INFO L175 Difference]: Start difference. First operand has 236 places, 378 transitions, 5039 flow. Second operand 7 states and 156 transitions. [2024-06-27 18:41:27,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 408 transitions, 6091 flow [2024-06-27 18:41:27,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 408 transitions, 5914 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-27 18:41:27,848 INFO L231 Difference]: Finished difference. Result has 239 places, 378 transitions, 5023 flow [2024-06-27 18:41:27,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4862, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5023, PETRI_PLACES=239, PETRI_TRANSITIONS=378} [2024-06-27 18:41:27,848 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 187 predicate places. [2024-06-27 18:41:27,848 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 378 transitions, 5023 flow [2024-06-27 18:41:27,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 18:41:27,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:27,849 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 18:41:27,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 18:41:27,849 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:27,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:27,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1303410656, now seen corresponding path program 4 times [2024-06-27 18:41:27,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:27,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770760922] [2024-06-27 18:41:27,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:27,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:27,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:28,430 INFO 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 18:41:28,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:28,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770760922] [2024-06-27 18:41:28,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770760922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:28,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:28,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:41:28,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220702425] [2024-06-27 18:41:28,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:28,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:41:28,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:28,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:41:28,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:41:28,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:41:28,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 378 transitions, 5023 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:41:28,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:28,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:41:28,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:30,205 INFO L124 PetriNetUnfolderBase]: 6181/9737 cut-off events. [2024-06-27 18:41:30,206 INFO L125 PetriNetUnfolderBase]: For 365161/365183 co-relation queries the response was YES. [2024-06-27 18:41:30,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68125 conditions, 9737 events. 6181/9737 cut-off events. For 365161/365183 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 61898 event pairs, 1716 based on Foata normal form. 13/9514 useless extension candidates. Maximal degree in co-relation 68009. Up to 7965 conditions per place. [2024-06-27 18:41:30,333 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 321 selfloop transitions, 102 changer transitions 0/431 dead transitions. [2024-06-27 18:41:30,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 431 transitions, 6883 flow [2024-06-27 18:41:30,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:41:30,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:41:30,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-27 18:41:30,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:41:30,334 INFO L175 Difference]: Start difference. First operand has 239 places, 378 transitions, 5023 flow. Second operand 8 states and 184 transitions. [2024-06-27 18:41:30,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 431 transitions, 6883 flow [2024-06-27 18:41:30,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 431 transitions, 6664 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 18:41:30,999 INFO L231 Difference]: Finished difference. Result has 240 places, 389 transitions, 5292 flow [2024-06-27 18:41:30,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4804, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5292, PETRI_PLACES=240, PETRI_TRANSITIONS=389} [2024-06-27 18:41:30,999 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 188 predicate places. [2024-06-27 18:41:30,999 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 389 transitions, 5292 flow [2024-06-27 18:41:31,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:41:31,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:31,000 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 18:41:31,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 18:41:31,000 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:31,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:31,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1303410222, now seen corresponding path program 2 times [2024-06-27 18:41:31,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:31,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013724842] [2024-06-27 18:41:31,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:31,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:31,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:31,755 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 18:41:31,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:31,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013724842] [2024-06-27 18:41:31,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013724842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:31,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:31,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:41:31,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124168283] [2024-06-27 18:41:31,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:31,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:41:31,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:31,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:41:31,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:41:31,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:41:31,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 389 transitions, 5292 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:41:31,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:31,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:41:31,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:33,455 INFO L124 PetriNetUnfolderBase]: 6201/9779 cut-off events. [2024-06-27 18:41:33,456 INFO L125 PetriNetUnfolderBase]: For 385452/385464 co-relation queries the response was YES. [2024-06-27 18:41:33,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69871 conditions, 9779 events. 6201/9779 cut-off events. For 385452/385464 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 62065 event pairs, 1703 based on Foata normal form. 13/9553 useless extension candidates. Maximal degree in co-relation 69755. Up to 8779 conditions per place. [2024-06-27 18:41:33,575 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 382 selfloop transitions, 41 changer transitions 0/431 dead transitions. [2024-06-27 18:41:33,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 431 transitions, 6542 flow [2024-06-27 18:41:33,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:33,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:33,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2024-06-27 18:41:33,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4468599033816425 [2024-06-27 18:41:33,577 INFO L175 Difference]: Start difference. First operand has 240 places, 389 transitions, 5292 flow. Second operand 9 states and 185 transitions. [2024-06-27 18:41:33,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 431 transitions, 6542 flow [2024-06-27 18:41:34,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 431 transitions, 6275 flow, removed 67 selfloop flow, removed 4 redundant places. [2024-06-27 18:41:34,324 INFO L231 Difference]: Finished difference. Result has 246 places, 396 transitions, 5270 flow [2024-06-27 18:41:34,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5025, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5270, PETRI_PLACES=246, PETRI_TRANSITIONS=396} [2024-06-27 18:41:34,324 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 194 predicate places. [2024-06-27 18:41:34,324 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 396 transitions, 5270 flow [2024-06-27 18:41:34,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:41:34,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:34,325 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 18:41:34,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 18:41:34,325 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:34,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:34,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1093937726, now seen corresponding path program 5 times [2024-06-27 18:41:34,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:34,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216992496] [2024-06-27 18:41:34,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:34,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:34,845 INFO 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 18:41:34,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:34,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216992496] [2024-06-27 18:41:34,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216992496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:34,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:34,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:41:34,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797348019] [2024-06-27 18:41:34,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:34,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:41:34,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:34,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:41:34,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:41:34,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:41:34,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 396 transitions, 5270 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:41:34,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:34,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:41:34,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:36,680 INFO L124 PetriNetUnfolderBase]: 6241/9830 cut-off events. [2024-06-27 18:41:36,680 INFO L125 PetriNetUnfolderBase]: For 389635/389643 co-relation queries the response was YES. [2024-06-27 18:41:36,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69580 conditions, 9830 events. 6241/9830 cut-off events. For 389635/389643 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 62416 event pairs, 1724 based on Foata normal form. 10/9604 useless extension candidates. Maximal degree in co-relation 69462. Up to 8035 conditions per place. [2024-06-27 18:41:36,789 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 322 selfloop transitions, 113 changer transitions 0/443 dead transitions. [2024-06-27 18:41:36,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 443 transitions, 7027 flow [2024-06-27 18:41:36,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:41:36,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:41:36,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-27 18:41:36,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:41:36,791 INFO L175 Difference]: Start difference. First operand has 246 places, 396 transitions, 5270 flow. Second operand 8 states and 184 transitions. [2024-06-27 18:41:36,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 443 transitions, 7027 flow [2024-06-27 18:41:37,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 443 transitions, 6859 flow, removed 53 selfloop flow, removed 5 redundant places. [2024-06-27 18:41:37,486 INFO L231 Difference]: Finished difference. Result has 250 places, 405 transitions, 5600 flow [2024-06-27 18:41:37,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5102, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5600, PETRI_PLACES=250, PETRI_TRANSITIONS=405} [2024-06-27 18:41:37,486 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 198 predicate places. [2024-06-27 18:41:37,486 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 405 transitions, 5600 flow [2024-06-27 18:41:37,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:41:37,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:37,487 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 18:41:37,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 18:41:37,487 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:37,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:37,487 INFO L85 PathProgramCache]: Analyzing trace with hash 814837502, now seen corresponding path program 6 times [2024-06-27 18:41:37,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:37,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631407877] [2024-06-27 18:41:37,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:37,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:37,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:38,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:38,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:38,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631407877] [2024-06-27 18:41:38,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631407877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:38,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:38,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:41:38,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302051030] [2024-06-27 18:41:38,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:38,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:41:38,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:38,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:41:38,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:41:38,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:41:38,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 405 transitions, 5600 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:41:38,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:38,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:41:38,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:39,855 INFO L124 PetriNetUnfolderBase]: 6237/9828 cut-off events. [2024-06-27 18:41:39,855 INFO L125 PetriNetUnfolderBase]: For 402594/402602 co-relation queries the response was YES. [2024-06-27 18:41:39,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70580 conditions, 9828 events. 6237/9828 cut-off events. For 402594/402602 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 62376 event pairs, 1724 based on Foata normal form. 10/9601 useless extension candidates. Maximal degree in co-relation 70459. Up to 8781 conditions per place. [2024-06-27 18:41:39,980 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 389 selfloop transitions, 45 changer transitions 0/442 dead transitions. [2024-06-27 18:41:39,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 442 transitions, 6904 flow [2024-06-27 18:41:39,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:41:39,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:41:39,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 175 transitions. [2024-06-27 18:41:39,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47554347826086957 [2024-06-27 18:41:39,981 INFO L175 Difference]: Start difference. First operand has 250 places, 405 transitions, 5600 flow. Second operand 8 states and 175 transitions. [2024-06-27 18:41:39,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 442 transitions, 6904 flow [2024-06-27 18:41:40,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 442 transitions, 6681 flow, removed 67 selfloop flow, removed 3 redundant places. [2024-06-27 18:41:40,860 INFO L231 Difference]: Finished difference. Result has 255 places, 405 transitions, 5475 flow [2024-06-27 18:41:40,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5377, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5475, PETRI_PLACES=255, PETRI_TRANSITIONS=405} [2024-06-27 18:41:40,860 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 203 predicate places. [2024-06-27 18:41:40,860 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 405 transitions, 5475 flow [2024-06-27 18:41:40,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:41:40,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:40,860 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 18:41:40,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 18:41:40,861 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:40,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:40,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1080115632, now seen corresponding path program 3 times [2024-06-27 18:41:40,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:40,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629512427] [2024-06-27 18:41:40,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:40,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:40,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:41,574 INFO 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 18:41:41,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:41,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629512427] [2024-06-27 18:41:41,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629512427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:41,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:41,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:41:41,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928331353] [2024-06-27 18:41:41,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:41,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:41:41,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:41,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:41:41,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:41:41,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:41:41,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 405 transitions, 5475 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:41:41,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:41,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:41:41,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:43,439 INFO L124 PetriNetUnfolderBase]: 6255/9852 cut-off events. [2024-06-27 18:41:43,439 INFO L125 PetriNetUnfolderBase]: For 402255/402255 co-relation queries the response was YES. [2024-06-27 18:41:43,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70462 conditions, 9852 events. 6255/9852 cut-off events. For 402255/402255 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 62435 event pairs, 1739 based on Foata normal form. 1/9613 useless extension candidates. Maximal degree in co-relation 70339. Up to 8939 conditions per place. [2024-06-27 18:41:43,581 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 408 selfloop transitions, 34 changer transitions 0/450 dead transitions. [2024-06-27 18:41:43,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 450 transitions, 6975 flow [2024-06-27 18:41:43,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:41:43,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:41:43,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 165 transitions. [2024-06-27 18:41:43,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4483695652173913 [2024-06-27 18:41:43,582 INFO L175 Difference]: Start difference. First operand has 255 places, 405 transitions, 5475 flow. Second operand 8 states and 165 transitions. [2024-06-27 18:41:43,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 450 transitions, 6975 flow [2024-06-27 18:41:44,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 450 transitions, 6709 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-27 18:41:44,341 INFO L231 Difference]: Finished difference. Result has 257 places, 426 transitions, 5844 flow [2024-06-27 18:41:44,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5215, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5844, PETRI_PLACES=257, PETRI_TRANSITIONS=426} [2024-06-27 18:41:44,342 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 205 predicate places. [2024-06-27 18:41:44,342 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 426 transitions, 5844 flow [2024-06-27 18:41:44,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:41:44,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:44,342 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 18:41:44,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 18:41:44,342 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:44,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:44,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1079640402, now seen corresponding path program 4 times [2024-06-27 18:41:44,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:44,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339708573] [2024-06-27 18:41:44,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:44,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:45,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:45,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:45,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339708573] [2024-06-27 18:41:45,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339708573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:45,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:45,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:41:45,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485623965] [2024-06-27 18:41:45,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:45,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:41:45,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:45,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:41:45,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:41:45,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:41:45,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 426 transitions, 5844 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:41:45,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:45,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:41:45,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:46,954 INFO L124 PetriNetUnfolderBase]: 6263/9869 cut-off events. [2024-06-27 18:41:46,954 INFO L125 PetriNetUnfolderBase]: For 418068/418068 co-relation queries the response was YES. [2024-06-27 18:41:47,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71062 conditions, 9869 events. 6263/9869 cut-off events. For 418068/418068 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 62717 event pairs, 1745 based on Foata normal form. 1/9628 useless extension candidates. Maximal degree in co-relation 70938. Up to 8919 conditions per place. [2024-06-27 18:41:47,080 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 423 selfloop transitions, 39 changer transitions 0/470 dead transitions. [2024-06-27 18:41:47,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 470 transitions, 7265 flow [2024-06-27 18:41:47,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:47,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:47,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 188 transitions. [2024-06-27 18:41:47,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45410628019323673 [2024-06-27 18:41:47,081 INFO L175 Difference]: Start difference. First operand has 257 places, 426 transitions, 5844 flow. Second operand 9 states and 188 transitions. [2024-06-27 18:41:47,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 470 transitions, 7265 flow [2024-06-27 18:41:47,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 470 transitions, 6699 flow, removed 278 selfloop flow, removed 2 redundant places. [2024-06-27 18:41:47,838 INFO L231 Difference]: Finished difference. Result has 264 places, 434 transitions, 5718 flow [2024-06-27 18:41:47,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5458, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5718, PETRI_PLACES=264, PETRI_TRANSITIONS=434} [2024-06-27 18:41:47,838 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 212 predicate places. [2024-06-27 18:41:47,838 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 434 transitions, 5718 flow [2024-06-27 18:41:47,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:41:47,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:47,839 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 18:41:47,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 18:41:47,839 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:47,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:47,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1316291054, now seen corresponding path program 1 times [2024-06-27 18:41:47,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:47,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460402393] [2024-06-27 18:41:47,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:47,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:47,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:48,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:48,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:48,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460402393] [2024-06-27 18:41:48,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460402393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:48,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:48,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:41:48,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329805760] [2024-06-27 18:41:48,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:48,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:41:48,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:48,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:41:48,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:41:48,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:41:48,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 434 transitions, 5718 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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 18:41:48,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:48,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:41:48,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:50,463 INFO L124 PetriNetUnfolderBase]: 5930/9416 cut-off events. [2024-06-27 18:41:50,463 INFO L125 PetriNetUnfolderBase]: For 434711/434796 co-relation queries the response was YES. [2024-06-27 18:41:50,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70383 conditions, 9416 events. 5930/9416 cut-off events. For 434711/434796 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 60485 event pairs, 1557 based on Foata normal form. 21/9161 useless extension candidates. Maximal degree in co-relation 70257. Up to 8303 conditions per place. [2024-06-27 18:41:50,577 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 409 selfloop transitions, 31 changer transitions 0/465 dead transitions. [2024-06-27 18:41:50,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 465 transitions, 6786 flow [2024-06-27 18:41:50,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:41:50,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:41:50,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-27 18:41:50,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4968944099378882 [2024-06-27 18:41:50,578 INFO L175 Difference]: Start difference. First operand has 264 places, 434 transitions, 5718 flow. Second operand 7 states and 160 transitions. [2024-06-27 18:41:50,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 465 transitions, 6786 flow [2024-06-27 18:41:51,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 465 transitions, 6590 flow, removed 65 selfloop flow, removed 7 redundant places. [2024-06-27 18:41:51,231 INFO L231 Difference]: Finished difference. Result has 264 places, 438 transitions, 5688 flow [2024-06-27 18:41:51,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5522, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5688, PETRI_PLACES=264, PETRI_TRANSITIONS=438} [2024-06-27 18:41:51,232 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 212 predicate places. [2024-06-27 18:41:51,232 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 438 transitions, 5688 flow [2024-06-27 18:41:51,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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 18:41:51,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:51,232 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 18:41:51,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 18:41:51,232 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:51,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:51,233 INFO L85 PathProgramCache]: Analyzing trace with hash -417960946, now seen corresponding path program 1 times [2024-06-27 18:41:51,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:51,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262901998] [2024-06-27 18:41:51,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:51,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:51,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:51,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:51,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:51,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262901998] [2024-06-27 18:41:51,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262901998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:51,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:51,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:41:51,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108358342] [2024-06-27 18:41:51,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:51,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:41:51,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:51,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:41:51,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:41:51,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:41:51,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 438 transitions, 5688 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:41:51,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:51,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:41:51,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:53,840 INFO L124 PetriNetUnfolderBase]: 6244/9840 cut-off events. [2024-06-27 18:41:53,840 INFO L125 PetriNetUnfolderBase]: For 428405/428405 co-relation queries the response was YES. [2024-06-27 18:41:53,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71299 conditions, 9840 events. 6244/9840 cut-off events. For 428405/428405 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 62483 event pairs, 1710 based on Foata normal form. 3/9602 useless extension candidates. Maximal degree in co-relation 71172. Up to 8738 conditions per place. [2024-06-27 18:41:53,993 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 426 selfloop transitions, 57 changer transitions 0/491 dead transitions. [2024-06-27 18:41:53,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 491 transitions, 7133 flow [2024-06-27 18:41:53,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:41:53,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:41:53,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-06-27 18:41:53,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-06-27 18:41:53,995 INFO L175 Difference]: Start difference. First operand has 264 places, 438 transitions, 5688 flow. Second operand 8 states and 176 transitions. [2024-06-27 18:41:53,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 491 transitions, 7133 flow [2024-06-27 18:41:55,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 491 transitions, 6885 flow, removed 95 selfloop flow, removed 5 redundant places. [2024-06-27 18:41:55,206 INFO L231 Difference]: Finished difference. Result has 269 places, 459 transitions, 5946 flow [2024-06-27 18:41:55,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5524, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5946, PETRI_PLACES=269, PETRI_TRANSITIONS=459} [2024-06-27 18:41:55,207 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 217 predicate places. [2024-06-27 18:41:55,207 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 459 transitions, 5946 flow [2024-06-27 18:41:55,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:41:55,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:55,207 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 18:41:55,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 18:41:55,207 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:55,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:55,208 INFO L85 PathProgramCache]: Analyzing trace with hash 806748238, now seen corresponding path program 2 times [2024-06-27 18:41:55,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:55,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200472015] [2024-06-27 18:41:55,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:55,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:55,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:55,854 INFO 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 18:41:55,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:55,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200472015] [2024-06-27 18:41:55,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200472015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:55,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:55,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:41:55,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053960360] [2024-06-27 18:41:55,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:55,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:41:55,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:55,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:41:55,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:41:55,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:41:55,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 459 transitions, 5946 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:41:55,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:55,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:41:55,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:57,797 INFO L124 PetriNetUnfolderBase]: 6337/9968 cut-off events. [2024-06-27 18:41:57,797 INFO L125 PetriNetUnfolderBase]: For 444041/444049 co-relation queries the response was YES. [2024-06-27 18:41:57,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72633 conditions, 9968 events. 6337/9968 cut-off events. For 444041/444049 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 63261 event pairs, 1689 based on Foata normal form. 6/9734 useless extension candidates. Maximal degree in co-relation 72503. Up to 8762 conditions per place. [2024-06-27 18:41:57,930 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 421 selfloop transitions, 86 changer transitions 0/515 dead transitions. [2024-06-27 18:41:57,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 515 transitions, 7444 flow [2024-06-27 18:41:57,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:41:57,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:41:57,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2024-06-27 18:41:57,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48641304347826086 [2024-06-27 18:41:57,931 INFO L175 Difference]: Start difference. First operand has 269 places, 459 transitions, 5946 flow. Second operand 8 states and 179 transitions. [2024-06-27 18:41:57,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 515 transitions, 7444 flow [2024-06-27 18:41:58,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 515 transitions, 7368 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-27 18:41:58,818 INFO L231 Difference]: Finished difference. Result has 275 places, 482 transitions, 6387 flow [2024-06-27 18:41:58,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5870, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6387, PETRI_PLACES=275, PETRI_TRANSITIONS=482} [2024-06-27 18:41:58,819 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 223 predicate places. [2024-06-27 18:41:58,819 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 482 transitions, 6387 flow [2024-06-27 18:41:58,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:41:58,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:58,819 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 18:41:58,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 18:41:58,819 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:58,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:58,819 INFO L85 PathProgramCache]: Analyzing trace with hash 815319118, now seen corresponding path program 3 times [2024-06-27 18:41:58,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:58,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669432181] [2024-06-27 18:41:58,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:58,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:58,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:59,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:59,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:59,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669432181] [2024-06-27 18:41:59,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669432181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:59,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:59,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:41:59,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180594215] [2024-06-27 18:41:59,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:59,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:41:59,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:59,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:41:59,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:41:59,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:41:59,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 482 transitions, 6387 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:41:59,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:59,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:41:59,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:01,517 INFO L124 PetriNetUnfolderBase]: 6354/9986 cut-off events. [2024-06-27 18:42:01,517 INFO L125 PetriNetUnfolderBase]: For 450650/450658 co-relation queries the response was YES. [2024-06-27 18:42:01,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73764 conditions, 9986 events. 6354/9986 cut-off events. For 450650/450658 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 63371 event pairs, 1688 based on Foata normal form. 9/9756 useless extension candidates. Maximal degree in co-relation 73631. Up to 8959 conditions per place. [2024-06-27 18:42:01,655 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 462 selfloop transitions, 74 changer transitions 0/544 dead transitions. [2024-06-27 18:42:01,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 544 transitions, 8085 flow [2024-06-27 18:42:01,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:42:01,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:42:01,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 192 transitions. [2024-06-27 18:42:01,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.463768115942029 [2024-06-27 18:42:01,657 INFO L175 Difference]: Start difference. First operand has 275 places, 482 transitions, 6387 flow. Second operand 9 states and 192 transitions. [2024-06-27 18:42:01,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 544 transitions, 8085 flow [2024-06-27 18:42:02,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 544 transitions, 7766 flow, removed 124 selfloop flow, removed 3 redundant places. [2024-06-27 18:42:02,664 INFO L231 Difference]: Finished difference. Result has 282 places, 504 transitions, 6692 flow [2024-06-27 18:42:02,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6164, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6692, PETRI_PLACES=282, PETRI_TRANSITIONS=504} [2024-06-27 18:42:02,664 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 230 predicate places. [2024-06-27 18:42:02,664 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 504 transitions, 6692 flow [2024-06-27 18:42:02,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:42:02,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:02,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:02,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 18:42:02,665 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:42:02,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:02,665 INFO L85 PathProgramCache]: Analyzing trace with hash -2115711298, now seen corresponding path program 1 times [2024-06-27 18:42:02,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:02,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714761591] [2024-06-27 18:42:02,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:02,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:03,129 INFO 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 18:42:03,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:03,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714761591] [2024-06-27 18:42:03,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714761591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:03,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:03,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:42:03,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448422616] [2024-06-27 18:42:03,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:03,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:42:03,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:03,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:42:03,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:42:03,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:42:03,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 504 transitions, 6692 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:42:03,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:03,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:42:03,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:05,345 INFO L124 PetriNetUnfolderBase]: 6420/10064 cut-off events. [2024-06-27 18:42:05,345 INFO L125 PetriNetUnfolderBase]: For 468776/468784 co-relation queries the response was YES. [2024-06-27 18:42:05,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75215 conditions, 10064 events. 6420/10064 cut-off events. For 468776/468784 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 63605 event pairs, 1587 based on Foata normal form. 7/9834 useless extension candidates. Maximal degree in co-relation 75079. Up to 8613 conditions per place. [2024-06-27 18:42:05,483 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 445 selfloop transitions, 103 changer transitions 0/556 dead transitions. [2024-06-27 18:42:05,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 556 transitions, 8139 flow [2024-06-27 18:42:05,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:42:05,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:42:05,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 18:42:05,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163043478260869 [2024-06-27 18:42:05,484 INFO L175 Difference]: Start difference. First operand has 282 places, 504 transitions, 6692 flow. Second operand 8 states and 190 transitions. [2024-06-27 18:42:05,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 556 transitions, 8139 flow [2024-06-27 18:42:06,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 556 transitions, 7931 flow, removed 76 selfloop flow, removed 4 redundant places. [2024-06-27 18:42:06,755 INFO L231 Difference]: Finished difference. Result has 287 places, 515 transitions, 6899 flow [2024-06-27 18:42:06,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6484, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6899, PETRI_PLACES=287, PETRI_TRANSITIONS=515} [2024-06-27 18:42:06,756 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 235 predicate places. [2024-06-27 18:42:06,756 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 515 transitions, 6899 flow [2024-06-27 18:42:06,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:42:06,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:06,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:06,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 18:42:06,756 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:42:06,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:06,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1147768074, now seen corresponding path program 2 times [2024-06-27 18:42:06,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:06,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204284259] [2024-06-27 18:42:06,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:06,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:07,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:07,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:07,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204284259] [2024-06-27 18:42:07,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204284259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:07,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:07,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:42:07,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480807385] [2024-06-27 18:42:07,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:07,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:42:07,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:07,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:42:07,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:42:07,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:42:07,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 515 transitions, 6899 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:42:07,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:07,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:42:07,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:09,443 INFO L124 PetriNetUnfolderBase]: 6528/10199 cut-off events. [2024-06-27 18:42:09,443 INFO L125 PetriNetUnfolderBase]: For 501402/501410 co-relation queries the response was YES. [2024-06-27 18:42:09,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79366 conditions, 10199 events. 6528/10199 cut-off events. For 501402/501410 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 64260 event pairs, 1573 based on Foata normal form. 7/9972 useless extension candidates. Maximal degree in co-relation 79227. Up to 8657 conditions per place. [2024-06-27 18:42:09,572 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 453 selfloop transitions, 110 changer transitions 0/571 dead transitions. [2024-06-27 18:42:09,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 571 transitions, 8687 flow [2024-06-27 18:42:09,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:42:09,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:42:09,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 18:42:09,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163043478260869 [2024-06-27 18:42:09,575 INFO L175 Difference]: Start difference. First operand has 287 places, 515 transitions, 6899 flow. Second operand 8 states and 190 transitions. [2024-06-27 18:42:09,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 571 transitions, 8687 flow [2024-06-27 18:42:10,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 571 transitions, 8419 flow, removed 59 selfloop flow, removed 4 redundant places. [2024-06-27 18:42:10,591 INFO L231 Difference]: Finished difference. Result has 292 places, 530 transitions, 7225 flow [2024-06-27 18:42:10,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6631, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7225, PETRI_PLACES=292, PETRI_TRANSITIONS=530} [2024-06-27 18:42:10,592 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 240 predicate places. [2024-06-27 18:42:10,592 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 530 transitions, 7225 flow [2024-06-27 18:42:10,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:42:10,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:10,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:10,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 18:42:10,592 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:42:10,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:10,593 INFO L85 PathProgramCache]: Analyzing trace with hash 2122217141, now seen corresponding path program 1 times [2024-06-27 18:42:10,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:10,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788235634] [2024-06-27 18:42:10,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:10,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:10,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:11,071 INFO 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 18:42:11,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:11,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788235634] [2024-06-27 18:42:11,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788235634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:11,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:11,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:42:11,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112685348] [2024-06-27 18:42:11,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:11,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:42:11,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:11,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:42:11,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:42:11,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:42:11,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 530 transitions, 7225 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:42:11,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:11,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:42:11,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:13,382 INFO L124 PetriNetUnfolderBase]: 6568/10236 cut-off events. [2024-06-27 18:42:13,382 INFO L125 PetriNetUnfolderBase]: For 513771/513779 co-relation queries the response was YES. [2024-06-27 18:42:13,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81324 conditions, 10236 events. 6568/10236 cut-off events. For 513771/513779 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 64247 event pairs, 1589 based on Foata normal form. 10/10019 useless extension candidates. Maximal degree in co-relation 81183. Up to 9142 conditions per place. [2024-06-27 18:42:13,508 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 510 selfloop transitions, 52 changer transitions 0/570 dead transitions. [2024-06-27 18:42:13,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 570 transitions, 8638 flow [2024-06-27 18:42:13,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:42:13,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:42:13,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2024-06-27 18:42:13,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48641304347826086 [2024-06-27 18:42:13,509 INFO L175 Difference]: Start difference. First operand has 292 places, 530 transitions, 7225 flow. Second operand 8 states and 179 transitions. [2024-06-27 18:42:13,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 570 transitions, 8638 flow [2024-06-27 18:42:14,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 570 transitions, 8286 flow, removed 86 selfloop flow, removed 5 redundant places. [2024-06-27 18:42:14,737 INFO L231 Difference]: Finished difference. Result has 295 places, 534 transitions, 7083 flow [2024-06-27 18:42:14,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6881, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7083, PETRI_PLACES=295, PETRI_TRANSITIONS=534} [2024-06-27 18:42:14,737 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 243 predicate places. [2024-06-27 18:42:14,737 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 534 transitions, 7083 flow [2024-06-27 18:42:14,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:42:14,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:14,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:14,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 18:42:14,738 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:42:14,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:14,738 INFO L85 PathProgramCache]: Analyzing trace with hash 671697085, now seen corresponding path program 2 times [2024-06-27 18:42:14,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:14,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122954001] [2024-06-27 18:42:14,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:14,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:14,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:15,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:15,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:15,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122954001] [2024-06-27 18:42:15,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122954001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:15,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:15,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:42:15,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614949621] [2024-06-27 18:42:15,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:15,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:42:15,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:15,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:42:15,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:42:15,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:42:15,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 534 transitions, 7083 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:42:15,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:15,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:42:15,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:17,367 INFO L124 PetriNetUnfolderBase]: 6631/10302 cut-off events. [2024-06-27 18:42:17,367 INFO L125 PetriNetUnfolderBase]: For 519588/519596 co-relation queries the response was YES. [2024-06-27 18:42:17,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81484 conditions, 10302 events. 6631/10302 cut-off events. For 519588/519596 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 64399 event pairs, 1630 based on Foata normal form. 10/10090 useless extension candidates. Maximal degree in co-relation 81342. Up to 8902 conditions per place. [2024-06-27 18:42:17,525 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 493 selfloop transitions, 77 changer transitions 0/578 dead transitions. [2024-06-27 18:42:17,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 578 transitions, 8939 flow [2024-06-27 18:42:17,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:42:17,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:42:17,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-27 18:42:17,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49728260869565216 [2024-06-27 18:42:17,526 INFO L175 Difference]: Start difference. First operand has 295 places, 534 transitions, 7083 flow. Second operand 8 states and 183 transitions. [2024-06-27 18:42:17,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 578 transitions, 8939 flow [2024-06-27 18:42:19,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 578 transitions, 8797 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-27 18:42:19,092 INFO L231 Difference]: Finished difference. Result has 297 places, 541 transitions, 7269 flow [2024-06-27 18:42:19,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6941, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7269, PETRI_PLACES=297, PETRI_TRANSITIONS=541} [2024-06-27 18:42:19,092 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 245 predicate places. [2024-06-27 18:42:19,093 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 541 transitions, 7269 flow [2024-06-27 18:42:19,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:42:19,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:19,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:19,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 18:42:19,093 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:42:19,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:19,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1994696292, now seen corresponding path program 3 times [2024-06-27 18:42:19,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:19,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042129013] [2024-06-27 18:42:19,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:19,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:19,641 INFO 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 18:42:19,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:19,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042129013] [2024-06-27 18:42:19,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042129013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:19,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:19,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:42:19,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266119108] [2024-06-27 18:42:19,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:19,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:42:19,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:19,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:42:19,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:42:19,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:42:19,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 541 transitions, 7269 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:42:19,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:19,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:42:19,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:21,875 INFO L124 PetriNetUnfolderBase]: 6781/10549 cut-off events. [2024-06-27 18:42:21,875 INFO L125 PetriNetUnfolderBase]: For 552954/552962 co-relation queries the response was YES. [2024-06-27 18:42:21,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84177 conditions, 10549 events. 6781/10549 cut-off events. For 552954/552962 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 66281 event pairs, 1574 based on Foata normal form. 7/10321 useless extension candidates. Maximal degree in co-relation 84034. Up to 8697 conditions per place. [2024-06-27 18:42:22,042 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 485 selfloop transitions, 118 changer transitions 0/611 dead transitions. [2024-06-27 18:42:22,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 611 transitions, 9494 flow [2024-06-27 18:42:22,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:42:22,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:42:22,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-27 18:42:22,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054347826086957 [2024-06-27 18:42:22,044 INFO L175 Difference]: Start difference. First operand has 297 places, 541 transitions, 7269 flow. Second operand 8 states and 186 transitions. [2024-06-27 18:42:22,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 611 transitions, 9494 flow [2024-06-27 18:42:23,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 611 transitions, 9342 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-27 18:42:23,434 INFO L231 Difference]: Finished difference. Result has 303 places, 569 transitions, 8045 flow [2024-06-27 18:42:23,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7124, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8045, PETRI_PLACES=303, PETRI_TRANSITIONS=569} [2024-06-27 18:42:23,434 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 251 predicate places. [2024-06-27 18:42:23,434 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 569 transitions, 8045 flow [2024-06-27 18:42:23,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:42:23,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:23,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:23,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 18:42:23,435 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:42:23,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:23,435 INFO L85 PathProgramCache]: Analyzing trace with hash 402437863, now seen corresponding path program 3 times [2024-06-27 18:42:23,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:23,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746143724] [2024-06-27 18:42:23,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:23,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:23,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:23,943 INFO 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 18:42:23,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:23,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746143724] [2024-06-27 18:42:23,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746143724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:23,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:23,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:42:23,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215141589] [2024-06-27 18:42:23,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:23,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:42:23,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:23,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:42:23,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:42:23,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:42:23,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 569 transitions, 8045 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:42:23,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:23,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:42:23,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:26,199 INFO L124 PetriNetUnfolderBase]: 6775/10526 cut-off events. [2024-06-27 18:42:26,199 INFO L125 PetriNetUnfolderBase]: For 574644/574652 co-relation queries the response was YES. [2024-06-27 18:42:26,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86294 conditions, 10526 events. 6775/10526 cut-off events. For 574644/574652 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 66096 event pairs, 1596 based on Foata normal form. 10/10308 useless extension candidates. Maximal degree in co-relation 86148. Up to 9097 conditions per place. [2024-06-27 18:42:26,354 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 511 selfloop transitions, 87 changer transitions 0/606 dead transitions. [2024-06-27 18:42:26,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 606 transitions, 9707 flow [2024-06-27 18:42:26,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:42:26,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:42:26,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-06-27 18:42:26,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49184782608695654 [2024-06-27 18:42:26,355 INFO L175 Difference]: Start difference. First operand has 303 places, 569 transitions, 8045 flow. Second operand 8 states and 181 transitions. [2024-06-27 18:42:26,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 606 transitions, 9707 flow [2024-06-27 18:42:28,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 606 transitions, 9256 flow, removed 184 selfloop flow, removed 3 redundant places. [2024-06-27 18:42:28,091 INFO L231 Difference]: Finished difference. Result has 308 places, 569 transitions, 7820 flow [2024-06-27 18:42:28,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7636, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7820, PETRI_PLACES=308, PETRI_TRANSITIONS=569} [2024-06-27 18:42:28,092 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 256 predicate places. [2024-06-27 18:42:28,092 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 569 transitions, 7820 flow [2024-06-27 18:42:28,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:42:28,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:28,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:28,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 18:42:28,092 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:42:28,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:28,092 INFO L85 PathProgramCache]: Analyzing trace with hash 2003766172, now seen corresponding path program 1 times [2024-06-27 18:42:28,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:28,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841841442] [2024-06-27 18:42:28,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:28,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:28,568 INFO 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 18:42:28,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:28,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841841442] [2024-06-27 18:42:28,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841841442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:28,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:28,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:42:28,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768850843] [2024-06-27 18:42:28,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:28,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:42:28,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:28,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:42:28,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:42:28,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:42:28,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 569 transitions, 7820 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:42:28,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:28,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:42:28,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:30,903 INFO L124 PetriNetUnfolderBase]: 6841/10634 cut-off events. [2024-06-27 18:42:30,903 INFO L125 PetriNetUnfolderBase]: For 589485/589499 co-relation queries the response was YES. [2024-06-27 18:42:31,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87015 conditions, 10634 events. 6841/10634 cut-off events. For 589485/589499 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 66761 event pairs, 1311 based on Foata normal form. 18/10421 useless extension candidates. Maximal degree in co-relation 86867. Up to 9442 conditions per place. [2024-06-27 18:42:31,065 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 560 selfloop transitions, 48 changer transitions 0/616 dead transitions. [2024-06-27 18:42:31,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 616 transitions, 9355 flow [2024-06-27 18:42:31,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:42:31,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:42:31,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-27 18:42:31,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49728260869565216 [2024-06-27 18:42:31,066 INFO L175 Difference]: Start difference. First operand has 308 places, 569 transitions, 7820 flow. Second operand 8 states and 183 transitions. [2024-06-27 18:42:31,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 616 transitions, 9355 flow [2024-06-27 18:42:32,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 616 transitions, 9188 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 18:42:32,851 INFO L231 Difference]: Finished difference. Result has 311 places, 576 transitions, 7922 flow [2024-06-27 18:42:32,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7653, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7922, PETRI_PLACES=311, PETRI_TRANSITIONS=576} [2024-06-27 18:42:32,852 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 259 predicate places. [2024-06-27 18:42:32,852 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 576 transitions, 7922 flow [2024-06-27 18:42:32,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:42:32,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:32,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:32,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 18:42:32,852 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:42:32,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:32,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1029557262, now seen corresponding path program 2 times [2024-06-27 18:42:32,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:32,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304487285] [2024-06-27 18:42:32,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:32,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:32,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:33,347 INFO 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 18:42:33,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:33,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304487285] [2024-06-27 18:42:33,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304487285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:33,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:33,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:42:33,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112200163] [2024-06-27 18:42:33,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:33,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:42:33,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:33,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:42:33,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:42:33,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:42:33,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 576 transitions, 7922 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:42:33,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:33,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:42:33,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:35,905 INFO L124 PetriNetUnfolderBase]: 6907/10740 cut-off events. [2024-06-27 18:42:35,906 INFO L125 PetriNetUnfolderBase]: For 614716/614730 co-relation queries the response was YES. [2024-06-27 18:42:36,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89059 conditions, 10740 events. 6907/10740 cut-off events. For 614716/614730 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 67667 event pairs, 1655 based on Foata normal form. 18/10523 useless extension candidates. Maximal degree in co-relation 88909. Up to 9589 conditions per place. [2024-06-27 18:42:36,064 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 559 selfloop transitions, 51 changer transitions 0/618 dead transitions. [2024-06-27 18:42:36,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 618 transitions, 9467 flow [2024-06-27 18:42:36,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:42:36,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:42:36,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-27 18:42:36,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945652173913043 [2024-06-27 18:42:36,065 INFO L175 Difference]: Start difference. First operand has 311 places, 576 transitions, 7922 flow. Second operand 8 states and 182 transitions. [2024-06-27 18:42:36,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 618 transitions, 9467 flow [2024-06-27 18:42:37,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 618 transitions, 9289 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-27 18:42:37,681 INFO L231 Difference]: Finished difference. Result has 314 places, 579 transitions, 7967 flow [2024-06-27 18:42:37,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7744, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7967, PETRI_PLACES=314, PETRI_TRANSITIONS=579} [2024-06-27 18:42:37,681 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 262 predicate places. [2024-06-27 18:42:37,681 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 579 transitions, 7967 flow [2024-06-27 18:42:37,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:42:37,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:37,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:37,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 18:42:37,682 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:42:37,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:37,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1325699022, now seen corresponding path program 3 times [2024-06-27 18:42:37,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:37,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226861028] [2024-06-27 18:42:37,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:37,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:37,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:38,204 INFO 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 18:42:38,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:38,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226861028] [2024-06-27 18:42:38,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226861028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:38,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:38,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:42:38,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052036157] [2024-06-27 18:42:38,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:38,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:42:38,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:38,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:42:38,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:42:38,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:42:38,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 579 transitions, 7967 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:42:38,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:38,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:42:38,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:40,546 INFO L124 PetriNetUnfolderBase]: 6973/10837 cut-off events. [2024-06-27 18:42:40,546 INFO L125 PetriNetUnfolderBase]: For 635279/635287 co-relation queries the response was YES. [2024-06-27 18:42:40,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90360 conditions, 10837 events. 6973/10837 cut-off events. For 635279/635287 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 68419 event pairs, 1657 based on Foata normal form. 12/10610 useless extension candidates. Maximal degree in co-relation 90209. Up to 9546 conditions per place. [2024-06-27 18:42:40,942 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 539 selfloop transitions, 72 changer transitions 0/619 dead transitions. [2024-06-27 18:42:40,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 619 transitions, 9586 flow [2024-06-27 18:42:40,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:42:40,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:42:40,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2024-06-27 18:42:40,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48641304347826086 [2024-06-27 18:42:40,943 INFO L175 Difference]: Start difference. First operand has 314 places, 579 transitions, 7967 flow. Second operand 8 states and 179 transitions. [2024-06-27 18:42:40,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 619 transitions, 9586 flow [2024-06-27 18:42:42,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 619 transitions, 9405 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-27 18:42:42,485 INFO L231 Difference]: Finished difference. Result has 316 places, 582 transitions, 8057 flow [2024-06-27 18:42:42,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7786, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=579, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8057, PETRI_PLACES=316, PETRI_TRANSITIONS=582} [2024-06-27 18:42:42,486 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 264 predicate places. [2024-06-27 18:42:42,486 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 582 transitions, 8057 flow [2024-06-27 18:42:42,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:42:42,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:42,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:42,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 18:42:42,486 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:42:42,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:42,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1037929866, now seen corresponding path program 1 times [2024-06-27 18:42:42,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:42,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109347448] [2024-06-27 18:42:42,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:42,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:43,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:43,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:43,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109347448] [2024-06-27 18:42:43,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109347448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:43,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:43,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:42:43,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403807834] [2024-06-27 18:42:43,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:43,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:42:43,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:43,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:42:43,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:42:43,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:42:43,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 582 transitions, 8057 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:43,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:43,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:42:43,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:45,696 INFO L124 PetriNetUnfolderBase]: 7121/11060 cut-off events. [2024-06-27 18:42:45,696 INFO L125 PetriNetUnfolderBase]: For 662108/662122 co-relation queries the response was YES. [2024-06-27 18:42:45,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92862 conditions, 11060 events. 7121/11060 cut-off events. For 662108/662122 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 69959 event pairs, 1580 based on Foata normal form. 13/10834 useless extension candidates. Maximal degree in co-relation 92710. Up to 9424 conditions per place. [2024-06-27 18:42:45,863 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 531 selfloop transitions, 115 changer transitions 0/654 dead transitions. [2024-06-27 18:42:45,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 654 transitions, 10522 flow [2024-06-27 18:42:45,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:42:45,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:42:45,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-06-27 18:42:45,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5241545893719807 [2024-06-27 18:42:45,865 INFO L175 Difference]: Start difference. First operand has 316 places, 582 transitions, 8057 flow. Second operand 9 states and 217 transitions. [2024-06-27 18:42:45,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 654 transitions, 10522 flow [2024-06-27 18:42:47,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 654 transitions, 10291 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-27 18:42:47,309 INFO L231 Difference]: Finished difference. Result has 321 places, 601 transitions, 8645 flow [2024-06-27 18:42:47,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7828, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8645, PETRI_PLACES=321, PETRI_TRANSITIONS=601} [2024-06-27 18:42:47,310 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 269 predicate places. [2024-06-27 18:42:47,310 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 601 transitions, 8645 flow [2024-06-27 18:42:47,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:47,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:47,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:47,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 18:42:47,311 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:42:47,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:47,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1994807520, now seen corresponding path program 2 times [2024-06-27 18:42:47,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:47,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862009798] [2024-06-27 18:42:47,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:47,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:47,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:47,981 INFO 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 18:42:47,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:47,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862009798] [2024-06-27 18:42:47,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862009798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:47,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:47,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:42:47,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004572025] [2024-06-27 18:42:47,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:47,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:42:47,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:47,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:42:47,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:42:48,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:42:48,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 601 transitions, 8645 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:48,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:48,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:42:48,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:50,572 INFO L124 PetriNetUnfolderBase]: 7161/11110 cut-off events. [2024-06-27 18:42:50,572 INFO L125 PetriNetUnfolderBase]: For 682518/682526 co-relation queries the response was YES. [2024-06-27 18:42:50,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95109 conditions, 11110 events. 7161/11110 cut-off events. For 682518/682526 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 70196 event pairs, 1633 based on Foata normal form. 10/10882 useless extension candidates. Maximal degree in co-relation 94954. Up to 9607 conditions per place. [2024-06-27 18:42:50,728 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 550 selfloop transitions, 94 changer transitions 0/652 dead transitions. [2024-06-27 18:42:50,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 652 transitions, 10747 flow [2024-06-27 18:42:50,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:42:50,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:42:50,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 203 transitions. [2024-06-27 18:42:50,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49033816425120774 [2024-06-27 18:42:50,729 INFO L175 Difference]: Start difference. First operand has 321 places, 601 transitions, 8645 flow. Second operand 9 states and 203 transitions. [2024-06-27 18:42:50,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 652 transitions, 10747 flow [2024-06-27 18:42:52,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 652 transitions, 10382 flow, removed 124 selfloop flow, removed 4 redundant places. [2024-06-27 18:42:52,553 INFO L231 Difference]: Finished difference. Result has 326 places, 606 transitions, 8682 flow [2024-06-27 18:42:52,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8296, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8682, PETRI_PLACES=326, PETRI_TRANSITIONS=606} [2024-06-27 18:42:52,554 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 274 predicate places. [2024-06-27 18:42:52,554 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 606 transitions, 8682 flow [2024-06-27 18:42:52,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:52,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:52,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:52,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 18:42:52,554 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:42:52,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:52,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1326085716, now seen corresponding path program 3 times [2024-06-27 18:42:52,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:52,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404983213] [2024-06-27 18:42:52,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:52,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:52,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:53,205 INFO 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 18:42:53,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:53,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404983213] [2024-06-27 18:42:53,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404983213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:53,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:53,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:42:53,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724722943] [2024-06-27 18:42:53,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:53,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:42:53,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:53,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:42:53,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:42:53,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:42:53,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 606 transitions, 8682 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:53,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:53,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:42:53,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:55,938 INFO L124 PetriNetUnfolderBase]: 7203/11163 cut-off events. [2024-06-27 18:42:55,939 INFO L125 PetriNetUnfolderBase]: For 705437/705445 co-relation queries the response was YES. [2024-06-27 18:42:56,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96792 conditions, 11163 events. 7203/11163 cut-off events. For 705437/705445 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 70472 event pairs, 1661 based on Foata normal form. 10/10934 useless extension candidates. Maximal degree in co-relation 96635. Up to 9663 conditions per place. [2024-06-27 18:42:56,096 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 552 selfloop transitions, 95 changer transitions 0/655 dead transitions. [2024-06-27 18:42:56,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 655 transitions, 10711 flow [2024-06-27 18:42:56,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:42:56,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:42:56,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 202 transitions. [2024-06-27 18:42:56,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48792270531400966 [2024-06-27 18:42:56,097 INFO L175 Difference]: Start difference. First operand has 326 places, 606 transitions, 8682 flow. Second operand 9 states and 202 transitions. [2024-06-27 18:42:56,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 655 transitions, 10711 flow [2024-06-27 18:42:57,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 655 transitions, 10410 flow, removed 86 selfloop flow, removed 6 redundant places. [2024-06-27 18:42:57,755 INFO L231 Difference]: Finished difference. Result has 329 places, 611 transitions, 8779 flow [2024-06-27 18:42:57,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8381, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8779, PETRI_PLACES=329, PETRI_TRANSITIONS=611} [2024-06-27 18:42:57,756 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 277 predicate places. [2024-06-27 18:42:57,756 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 611 transitions, 8779 flow [2024-06-27 18:42:57,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:57,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:57,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:57,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 18:42:57,756 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:42:57,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:57,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1326099201, now seen corresponding path program 1 times [2024-06-27 18:42:57,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:57,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175464344] [2024-06-27 18:42:57,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:57,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:57,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:58,449 INFO 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 18:42:58,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:58,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175464344] [2024-06-27 18:42:58,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175464344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:58,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:58,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:42:58,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586320497] [2024-06-27 18:42:58,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:58,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:42:58,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:58,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:42:58,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:42:58,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:42:58,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 611 transitions, 8779 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:58,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:58,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:42:58,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:00,928 INFO L124 PetriNetUnfolderBase]: 7234/11217 cut-off events. [2024-06-27 18:43:00,928 INFO L125 PetriNetUnfolderBase]: For 732553/732559 co-relation queries the response was YES. [2024-06-27 18:43:01,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98387 conditions, 11217 events. 7234/11217 cut-off events. For 732553/732559 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 70837 event pairs, 1671 based on Foata normal form. 8/10983 useless extension candidates. Maximal degree in co-relation 98229. Up to 10225 conditions per place. [2024-06-27 18:43:01,110 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 614 selfloop transitions, 46 changer transitions 0/668 dead transitions. [2024-06-27 18:43:01,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 668 transitions, 11022 flow [2024-06-27 18:43:01,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:01,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:01,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 190 transitions. [2024-06-27 18:43:01,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45893719806763283 [2024-06-27 18:43:01,111 INFO L175 Difference]: Start difference. First operand has 329 places, 611 transitions, 8779 flow. Second operand 9 states and 190 transitions. [2024-06-27 18:43:01,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 668 transitions, 11022 flow [2024-06-27 18:43:03,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 668 transitions, 10598 flow, removed 90 selfloop flow, removed 8 redundant places. [2024-06-27 18:43:03,225 INFO L231 Difference]: Finished difference. Result has 333 places, 633 transitions, 9271 flow [2024-06-27 18:43:03,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8362, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9271, PETRI_PLACES=333, PETRI_TRANSITIONS=633} [2024-06-27 18:43:03,226 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 281 predicate places. [2024-06-27 18:43:03,226 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 633 transitions, 9271 flow [2024-06-27 18:43:03,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:03,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:03,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:03,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 18:43:03,226 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:43:03,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:03,227 INFO L85 PathProgramCache]: Analyzing trace with hash 565655328, now seen corresponding path program 4 times [2024-06-27 18:43:03,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:03,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539868429] [2024-06-27 18:43:03,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:03,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:03,928 INFO 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 18:43:03,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:03,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539868429] [2024-06-27 18:43:03,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539868429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:03,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:03,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:43:03,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751308306] [2024-06-27 18:43:03,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:03,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:43:03,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:03,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:43:03,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:43:04,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:43:04,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 633 transitions, 9271 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:04,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:04,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:43:04,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:06,829 INFO L124 PetriNetUnfolderBase]: 7333/11346 cut-off events. [2024-06-27 18:43:06,829 INFO L125 PetriNetUnfolderBase]: For 769255/769263 co-relation queries the response was YES. [2024-06-27 18:43:06,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100509 conditions, 11346 events. 7333/11346 cut-off events. For 769255/769263 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 71656 event pairs, 1648 based on Foata normal form. 10/11118 useless extension candidates. Maximal degree in co-relation 100347. Up to 9659 conditions per place. [2024-06-27 18:43:07,003 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 573 selfloop transitions, 120 changer transitions 0/701 dead transitions. [2024-06-27 18:43:07,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 701 transitions, 11980 flow [2024-06-27 18:43:07,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:43:07,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:43:07,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 225 transitions. [2024-06-27 18:43:07,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-06-27 18:43:07,004 INFO L175 Difference]: Start difference. First operand has 333 places, 633 transitions, 9271 flow. Second operand 10 states and 225 transitions. [2024-06-27 18:43:07,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 701 transitions, 11980 flow [2024-06-27 18:43:09,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 701 transitions, 11114 flow, removed 345 selfloop flow, removed 5 redundant places. [2024-06-27 18:43:09,447 INFO L231 Difference]: Finished difference. Result has 339 places, 647 transitions, 9204 flow [2024-06-27 18:43:09,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8481, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9204, PETRI_PLACES=339, PETRI_TRANSITIONS=647} [2024-06-27 18:43:09,447 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 287 predicate places. [2024-06-27 18:43:09,447 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 647 transitions, 9204 flow [2024-06-27 18:43:09,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:09,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:09,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:09,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 18:43:09,448 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:43:09,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:09,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1166878756, now seen corresponding path program 4 times [2024-06-27 18:43:09,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:09,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534525954] [2024-06-27 18:43:09,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:09,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:09,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:09,912 INFO 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 18:43:09,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:09,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534525954] [2024-06-27 18:43:09,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534525954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:09,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:09,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:43:09,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71824485] [2024-06-27 18:43:09,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:09,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:43:09,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:09,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:43:09,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:43:09,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:43:09,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 647 transitions, 9204 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:43:09,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:09,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:43:09,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:13,452 INFO L124 PetriNetUnfolderBase]: 7369/11387 cut-off events. [2024-06-27 18:43:13,452 INFO L125 PetriNetUnfolderBase]: For 799025/799025 co-relation queries the response was YES. [2024-06-27 18:43:13,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102753 conditions, 11387 events. 7369/11387 cut-off events. For 799025/799025 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 71867 event pairs, 1627 based on Foata normal form. 2/11141 useless extension candidates. Maximal degree in co-relation 102589. Up to 9918 conditions per place. [2024-06-27 18:43:13,617 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 569 selfloop transitions, 121 changer transitions 0/698 dead transitions. [2024-06-27 18:43:13,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 698 transitions, 10999 flow [2024-06-27 18:43:13,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:43:13,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:43:13,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-27 18:43:13,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054347826086957 [2024-06-27 18:43:13,618 INFO L175 Difference]: Start difference. First operand has 339 places, 647 transitions, 9204 flow. Second operand 8 states and 186 transitions. [2024-06-27 18:43:13,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 698 transitions, 10999 flow [2024-06-27 18:43:16,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 698 transitions, 10660 flow, removed 128 selfloop flow, removed 5 redundant places. [2024-06-27 18:43:16,043 INFO L231 Difference]: Finished difference. Result has 344 places, 661 transitions, 9409 flow [2024-06-27 18:43:16,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8865, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9409, PETRI_PLACES=344, PETRI_TRANSITIONS=661} [2024-06-27 18:43:16,043 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 292 predicate places. [2024-06-27 18:43:16,044 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 661 transitions, 9409 flow [2024-06-27 18:43:16,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:43:16,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:16,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:16,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 18:43:16,044 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:43:16,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:16,044 INFO L85 PathProgramCache]: Analyzing trace with hash -427653946, now seen corresponding path program 5 times [2024-06-27 18:43:16,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:16,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485487755] [2024-06-27 18:43:16,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:16,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:16,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:16,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:16,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:16,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485487755] [2024-06-27 18:43:16,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485487755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:16,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:16,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:43:16,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832610291] [2024-06-27 18:43:16,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:16,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:43:16,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:16,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:43:16,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:43:16,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:43:16,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 661 transitions, 9409 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:43:16,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:16,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:43:16,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:19,785 INFO L124 PetriNetUnfolderBase]: 7399/11432 cut-off events. [2024-06-27 18:43:19,785 INFO L125 PetriNetUnfolderBase]: For 819193/819193 co-relation queries the response was YES. [2024-06-27 18:43:19,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105070 conditions, 11432 events. 7399/11432 cut-off events. For 819193/819193 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 72160 event pairs, 1627 based on Foata normal form. 2/11185 useless extension candidates. Maximal degree in co-relation 104902. Up to 9958 conditions per place. [2024-06-27 18:43:19,957 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 588 selfloop transitions, 110 changer transitions 0/706 dead transitions. [2024-06-27 18:43:19,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 706 transitions, 11176 flow [2024-06-27 18:43:19,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:43:19,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:43:19,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-27 18:43:19,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054347826086957 [2024-06-27 18:43:19,958 INFO L175 Difference]: Start difference. First operand has 344 places, 661 transitions, 9409 flow. Second operand 8 states and 186 transitions. [2024-06-27 18:43:19,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 706 transitions, 11176 flow [2024-06-27 18:43:22,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 706 transitions, 10866 flow, removed 70 selfloop flow, removed 4 redundant places. [2024-06-27 18:43:22,132 INFO L231 Difference]: Finished difference. Result has 348 places, 665 transitions, 9467 flow [2024-06-27 18:43:22,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9099, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9467, PETRI_PLACES=348, PETRI_TRANSITIONS=665} [2024-06-27 18:43:22,132 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 296 predicate places. [2024-06-27 18:43:22,132 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 665 transitions, 9467 flow [2024-06-27 18:43:22,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:43:22,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:22,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:22,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 18:43:22,133 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:43:22,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:22,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1900949636, now seen corresponding path program 6 times [2024-06-27 18:43:22,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:22,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843844156] [2024-06-27 18:43:22,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:22,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:22,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:22,641 INFO 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 18:43:22,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:22,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843844156] [2024-06-27 18:43:22,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843844156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:22,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:22,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:43:22,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966007930] [2024-06-27 18:43:22,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:22,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:43:22,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:22,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:43:22,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:43:22,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:43:22,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 665 transitions, 9467 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:43:22,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:22,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:43:22,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:25,866 INFO L124 PetriNetUnfolderBase]: 7429/11467 cut-off events. [2024-06-27 18:43:25,866 INFO L125 PetriNetUnfolderBase]: For 838265/838265 co-relation queries the response was YES. [2024-06-27 18:43:26,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105733 conditions, 11467 events. 7429/11467 cut-off events. For 838265/838265 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 72338 event pairs, 1616 based on Foata normal form. 2/11221 useless extension candidates. Maximal degree in co-relation 105564. Up to 9903 conditions per place. [2024-06-27 18:43:26,060 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 561 selfloop transitions, 137 changer transitions 0/706 dead transitions. [2024-06-27 18:43:26,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 706 transitions, 11241 flow [2024-06-27 18:43:26,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:43:26,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:43:26,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-27 18:43:26,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054347826086957 [2024-06-27 18:43:26,061 INFO L175 Difference]: Start difference. First operand has 348 places, 665 transitions, 9467 flow. Second operand 8 states and 186 transitions. [2024-06-27 18:43:26,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 706 transitions, 11241 flow [2024-06-27 18:43:28,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 706 transitions, 10852 flow, removed 82 selfloop flow, removed 7 redundant places. [2024-06-27 18:43:28,311 INFO L231 Difference]: Finished difference. Result has 350 places, 670 transitions, 9584 flow [2024-06-27 18:43:28,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9110, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=665, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9584, PETRI_PLACES=350, PETRI_TRANSITIONS=670} [2024-06-27 18:43:28,312 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 298 predicate places. [2024-06-27 18:43:28,312 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 670 transitions, 9584 flow [2024-06-27 18:43:28,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:43:28,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:28,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:28,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 18:43:28,313 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:43:28,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:28,313 INFO L85 PathProgramCache]: Analyzing trace with hash -427533046, now seen corresponding path program 7 times [2024-06-27 18:43:28,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:28,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21646906] [2024-06-27 18:43:28,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:28,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:28,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:28,814 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 18:43:28,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:28,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21646906] [2024-06-27 18:43:28,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21646906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:28,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:28,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:43:28,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545614098] [2024-06-27 18:43:28,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:28,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:43:28,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:28,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:43:28,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:43:28,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:43:28,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 670 transitions, 9584 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:43:28,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:28,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:43:28,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:31,900 INFO L124 PetriNetUnfolderBase]: 7444/11488 cut-off events. [2024-06-27 18:43:31,900 INFO L125 PetriNetUnfolderBase]: For 846811/846811 co-relation queries the response was YES. [2024-06-27 18:43:32,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105220 conditions, 11488 events. 7444/11488 cut-off events. For 846811/846811 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 72399 event pairs, 1633 based on Foata normal form. 2/11242 useless extension candidates. Maximal degree in co-relation 105051. Up to 9949 conditions per place. [2024-06-27 18:43:32,083 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 594 selfloop transitions, 120 changer transitions 0/722 dead transitions. [2024-06-27 18:43:32,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 722 transitions, 11759 flow [2024-06-27 18:43:32,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:43:32,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:43:32,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-27 18:43:32,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054347826086957 [2024-06-27 18:43:32,084 INFO L175 Difference]: Start difference. First operand has 350 places, 670 transitions, 9584 flow. Second operand 8 states and 186 transitions. [2024-06-27 18:43:32,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 722 transitions, 11759 flow [2024-06-27 18:43:34,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 722 transitions, 11363 flow, removed 74 selfloop flow, removed 5 redundant places. [2024-06-27 18:43:34,773 INFO L231 Difference]: Finished difference. Result has 354 places, 681 transitions, 9833 flow [2024-06-27 18:43:34,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9188, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=670, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=554, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9833, PETRI_PLACES=354, PETRI_TRANSITIONS=681} [2024-06-27 18:43:34,773 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 302 predicate places. [2024-06-27 18:43:34,773 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 681 transitions, 9833 flow [2024-06-27 18:43:34,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:43:34,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:34,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:34,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 18:43:34,774 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:43:34,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:34,774 INFO L85 PathProgramCache]: Analyzing trace with hash -427532829, now seen corresponding path program 4 times [2024-06-27 18:43:34,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:34,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498852534] [2024-06-27 18:43:34,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:34,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:35,303 INFO 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 18:43:35,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:35,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498852534] [2024-06-27 18:43:35,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498852534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:35,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:35,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:43:35,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866539462] [2024-06-27 18:43:35,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:35,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:43:35,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:35,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:43:35,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:43:35,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:43:35,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 681 transitions, 9833 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:43:35,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:35,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:43:35,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:38,254 INFO L124 PetriNetUnfolderBase]: 7437/11483 cut-off events. [2024-06-27 18:43:38,254 INFO L125 PetriNetUnfolderBase]: For 857441/857441 co-relation queries the response was YES. [2024-06-27 18:43:38,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105157 conditions, 11483 events. 7437/11483 cut-off events. For 857441/857441 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 72409 event pairs, 1672 based on Foata normal form. 1/11240 useless extension candidates. Maximal degree in co-relation 104986. Up to 10360 conditions per place. [2024-06-27 18:43:38,433 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 658 selfloop transitions, 50 changer transitions 0/716 dead transitions. [2024-06-27 18:43:38,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 716 transitions, 11485 flow [2024-06-27 18:43:38,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:43:38,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:43:38,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 175 transitions. [2024-06-27 18:43:38,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47554347826086957 [2024-06-27 18:43:38,434 INFO L175 Difference]: Start difference. First operand has 354 places, 681 transitions, 9833 flow. Second operand 8 states and 175 transitions. [2024-06-27 18:43:38,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 716 transitions, 11485 flow [2024-06-27 18:43:41,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 716 transitions, 11146 flow, removed 106 selfloop flow, removed 4 redundant places. [2024-06-27 18:43:41,095 INFO L231 Difference]: Finished difference. Result has 358 places, 681 transitions, 9609 flow [2024-06-27 18:43:41,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9502, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=631, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9609, PETRI_PLACES=358, PETRI_TRANSITIONS=681} [2024-06-27 18:43:41,096 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 306 predicate places. [2024-06-27 18:43:41,096 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 681 transitions, 9609 flow [2024-06-27 18:43:41,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:43:41,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:41,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:41,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 18:43:41,096 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:43:41,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:41,097 INFO L85 PathProgramCache]: Analyzing trace with hash -71901759, now seen corresponding path program 5 times [2024-06-27 18:43:41,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:41,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414653599] [2024-06-27 18:43:41,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:41,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:41,705 INFO 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 18:43:41,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:41,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414653599] [2024-06-27 18:43:41,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414653599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:41,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:41,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:43:41,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197400942] [2024-06-27 18:43:41,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:41,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:43:41,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:41,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:43:41,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:43:41,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:43:41,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 681 transitions, 9609 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:43:41,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:41,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:43:41,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:44,850 INFO L124 PetriNetUnfolderBase]: 7457/11525 cut-off events. [2024-06-27 18:43:44,850 INFO L125 PetriNetUnfolderBase]: For 861662/861662 co-relation queries the response was YES. [2024-06-27 18:43:44,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105158 conditions, 11525 events. 7457/11525 cut-off events. For 861662/861662 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 72907 event pairs, 1657 based on Foata normal form. 1/11283 useless extension candidates. Maximal degree in co-relation 104985. Up to 10558 conditions per place. [2024-06-27 18:43:45,040 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 683 selfloop transitions, 25 changer transitions 0/716 dead transitions. [2024-06-27 18:43:45,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 716 transitions, 11310 flow [2024-06-27 18:43:45,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:43:45,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:43:45,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-06-27 18:43:45,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4592391304347826 [2024-06-27 18:43:45,041 INFO L175 Difference]: Start difference. First operand has 358 places, 681 transitions, 9609 flow. Second operand 8 states and 169 transitions. [2024-06-27 18:43:45,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 716 transitions, 11310 flow [2024-06-27 18:43:47,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 716 transitions, 10998 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-27 18:43:47,777 INFO L231 Difference]: Finished difference. Result has 356 places, 684 transitions, 9433 flow [2024-06-27 18:43:47,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9297, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=656, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9433, PETRI_PLACES=356, PETRI_TRANSITIONS=684} [2024-06-27 18:43:47,777 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 304 predicate places. [2024-06-27 18:43:47,777 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 684 transitions, 9433 flow [2024-06-27 18:43:47,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:43:47,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:47,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:47,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 18:43:47,778 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:43:47,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:47,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1785001669, now seen corresponding path program 6 times [2024-06-27 18:43:47,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:47,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614728584] [2024-06-27 18:43:47,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:47,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:47,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:48,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:48,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:48,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614728584] [2024-06-27 18:43:48,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614728584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:48,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:48,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:43:48,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306836630] [2024-06-27 18:43:48,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:48,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:43:48,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:48,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:43:48,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:43:48,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:43:48,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 684 transitions, 9433 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 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 18:43:48,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:48,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:43:48,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:51,354 INFO L124 PetriNetUnfolderBase]: 7477/11552 cut-off events. [2024-06-27 18:43:51,354 INFO L125 PetriNetUnfolderBase]: For 870740/870740 co-relation queries the response was YES. [2024-06-27 18:43:51,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105114 conditions, 11552 events. 7477/11552 cut-off events. For 870740/870740 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 72972 event pairs, 1648 based on Foata normal form. 1/11303 useless extension candidates. Maximal degree in co-relation 104940. Up to 10290 conditions per place. [2024-06-27 18:43:51,548 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 641 selfloop transitions, 76 changer transitions 0/725 dead transitions. [2024-06-27 18:43:51,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 725 transitions, 11345 flow [2024-06-27 18:43:51,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:43:51,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:43:51,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 178 transitions. [2024-06-27 18:43:51,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.483695652173913 [2024-06-27 18:43:51,549 INFO L175 Difference]: Start difference. First operand has 356 places, 684 transitions, 9433 flow. Second operand 8 states and 178 transitions. [2024-06-27 18:43:51,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 725 transitions, 11345 flow